Merge branch 'master' into docking

Backends: Win32: Refactor ImGui_ImplWin32_KeyEventToImGuiKey() logic.
Ref #7672

.github/workflows/build.yml

@@ -8,6 +8,7 @@ on:
     # "scheduled" workflow, while maintaining ability to perform local CI builds.
     workflows:
       - scheduled
+      - manual
     branches:
       - master
       - docking
@@ -123,6 +124,11 @@ jobs:
         run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_vulkan/example_glfw_vulkan.vcxproj /p:Platform=Win32 /p:Configuration=Release'
         if: github.event_name == 'workflow_run'
 
+      - name: Build Win32 example_sdl2_sdlrenderer2
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl2_sdlrenderer2/example_sdl2_sdlrenderer2.vcxproj /p:Platform=Win32 /p:Configuration=Release'
+        if: github.event_name == 'workflow_run'
+
       - name: Build Win32 example_sdl2_vulkan
         shell: cmd
         run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl2_vulkan/example_sdl2_vulkan.vcxproj /p:Platform=Win32 /p:Configuration=Release'
@@ -168,6 +174,11 @@ jobs:
         shell: cmd
         run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_vulkan/example_glfw_vulkan.vcxproj /p:Platform=x64 /p:Configuration=Release'
 
+      - name: Build x64 example_sdl2_sdlrenderer2
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl2_sdlrenderer2/example_sdl2_sdlrenderer2.vcxproj /p:Platform=x64 /p:Configuration=Release'
+        if: github.event_name == 'workflow_run'
+
       - name: Build x64 example_sdl2_vulkan
         shell: cmd
         run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl2_vulkan/example_sdl2_vulkan.vcxproj /p:Platform=x64 /p:Configuration=Release'
@@ -207,7 +218,7 @@ jobs:
         run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx12/example_win32_directx12.vcxproj /p:Platform=x64 /p:Configuration=Release'
 
   Linux:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
     - uses: actions/checkout@v4
 
@@ -313,6 +324,18 @@ jobs:
         EOF
         g++ -I. -std=c++11 -Wall -Wformat -o example_single_file example_single_file.cpp
 
+    - name: Build example_null (with C++20)
+      run: |
+        cat > example_single_file.cpp <<'EOF'
+
+        #define IMGUI_DISABLE_OBSOLETE_KEYIO
+        #define IMGUI_IMPLEMENTATION
+        #include "misc/single_file/imgui_single_file.h"
+        #include "examples/example_null/main.cpp"
+
+        EOF
+        g++ -I. -std=c++20 -Wall -Wformat -o example_single_file example_single_file.cpp
+
     - name: Build example_null (with IMGUI_DISABLE_DEMO_WINDOWS and IMGUI_DISABLE_DEBUG_TOOLS)
       run: |
         cat > example_single_file.cpp <<'EOF'
@@ -370,6 +393,18 @@ jobs:
         EOF
         g++ -I. -std=c++11 -Wall -Wformat -o example_single_file example_single_file.cpp
 
+    - name: Build example_null (C++26, Clang)
+      run: |
+        cat > example_single_file.cpp <<'EOF'
+
+        #define IMGUI_IMPLEMENTATION
+        #define IMGUI_DISABLE_DEMO_WINDOWS
+        #include "misc/single_file/imgui_single_file.h"
+        #include "examples/example_null/main.cpp"
+
+        EOF
+        clang++ -I. -std=c++26 -Wall -Wformat -fno-exceptions -fno-threadsafe-statics -lc -lm -o example_single_file example_single_file.cpp
+
     - name: Build example_null (without c++ runtime, Clang)
       run: |
         cat > example_single_file.cpp <<'EOF'
@@ -422,6 +457,17 @@ jobs:
         EOF
         clang++ -I. -std=c++11 -Wall -Wformat -o example_single_file example_single_file.cpp
 
+    - name: Build example_null (single file build, c++20)
+      run: |
+        cat > example_single_file.cpp <<'EOF'
+
+        #define IMGUI_IMPLEMENTATION
+        #include "misc/single_file/imgui_single_file.h"
+        #include "examples/example_null/main.cpp"
+
+        EOF
+        clang++ -I. -std=c++20 -Wall -Wformat -o example_single_file example_single_file.cpp
+
     - name: Build example_null (without c++ runtime)
       run: |
         cat > example_single_file.cpp <<'EOF'
@@ -470,7 +516,7 @@ jobs:
         xcodebuild -project examples/example_apple_metal/example_apple_metal.xcodeproj -target example_apple_metal_ios CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO CODE_SIGNING_ALLOWED=NO
 
   Emscripten:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
     - uses: actions/checkout@v4
 
@@ -481,6 +527,7 @@ jobs:
         emsdk-master/emsdk update
         emsdk-master/emsdk install latest
         emsdk-master/emsdk activate latest
+        sudo apt-get install build-essential
 
     - name: Build example_sdl2_opengl3 with Emscripten
       run: |
@@ -489,15 +536,28 @@ jobs:
         popd
         make -C examples/example_sdl2_opengl3 -f Makefile.emscripten
 
-    - name: Build example_glfw_wgpu
+    # This build compiles example_glfw_wgpu using Makefile.emscripten and Emscripten GLFW built-in implementation (-sUSE_GLFW=3)
+    # This ensures 2 things: the make build works, and the GLFW built-in implementation is tested
+    - name: Build example_glfw_wgpu with Emscripten/Makefile
       run: |
         pushd emsdk-master
         source ./emsdk_env.sh
         popd
         make -C examples/example_glfw_wgpu -f Makefile.emscripten
 
+    # This build compiles example_glfw_wgpu using CMakeLists.txt and Emscripten GLFW contrib port (--use-port=contrib.glfw3)
+    # This ensures 2 things: the CMake build works, and the GLFW contrib port is tested
+    - name: Build example_glfw_wgpu with Emscripten/CMake
+      run: |
+        pushd emsdk-master
+        source ./emsdk_env.sh
+        popd
+        emcc -v
+        emcmake cmake -B build -DCMAKE_BUILD_TYPE=Release examples/example_glfw_wgpu
+        cmake --build build
+
   Android:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
     - uses: actions/checkout@v4
 

.github/workflows/manual.yml

@@ -0,0 +1,12 @@
+#
+# This is a dummy workflow used to trigger full builds manually.
+#
+name: manual
+
+on: workflow_dispatch
+
+jobs:
+  manual:
+    runs-on: ubuntu-latest
+    steps:
+      - run: exit 0

.github/workflows/static-analysis.yml

@@ -42,5 +42,5 @@ jobs:
           fi
           cd examples/example_null
           pvs-studio-analyzer trace -- make WITH_EXTRA_WARNINGS=1
-          pvs-studio-analyzer analyze -e ../../imstb_rectpack.h -e ../../imstb_textedit.h -e ../../imstb_truetype.h -l ../../pvs-studio.lic -o pvs-studio.log
+          pvs-studio-analyzer analyze --disableLicenseExpirationCheck -e ../../imstb_rectpack.h -e ../../imstb_textedit.h -e ../../imstb_truetype.h -l ../../pvs-studio.lic -o pvs-studio.log
           plog-converter -a 'GA:1,2;OP:1' -d V1071 -t errorfile -w pvs-studio.log

backends/imgui_impl_allegro5.cpp

@@ -21,6 +21,9 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2024-08-22: moved some OS/backend related function pointers from ImGuiIO to ImGuiPlatformIO:
+//               - io.GetClipboardTextFn    -> platform_io.Platform_GetClipboardTextFn
+//               - io.SetClipboardTextFn    -> platform_io.Platform_SetClipboardTextFn
 //  2022-11-30: Renderer: Restoring using al_draw_indexed_prim() when Allegro version is >= 5.2.5.
 //  2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
 //  2022-09-26: Inputs: Renamed ImGuiKey_ModXXX introduced in 1.87 to ImGuiMod_XXX (old names still supported).
@@ -292,7 +295,7 @@ void ImGui_ImplAllegro5_InvalidateDeviceObjects()
 }
 
 #if ALLEGRO_HAS_CLIPBOARD
-static const char* ImGui_ImplAllegro5_GetClipboardText(void*)
+static const char* ImGui_ImplAllegro5_GetClipboardText(ImGuiContext*)
 {
     ImGui_ImplAllegro5_Data* bd = ImGui_ImplAllegro5_GetBackendData();
     if (bd->ClipboardTextData)
@@ -301,14 +304,15 @@ static const char* ImGui_ImplAllegro5_GetClipboardText(void*)
     return bd->ClipboardTextData;
 }
 
-static void ImGui_ImplAllegro5_SetClipboardText(void*, const char* text)
+static void ImGui_ImplAllegro5_SetClipboardText(ImGuiContext*, const char* text)
 {
     ImGui_ImplAllegro5_Data* bd = ImGui_ImplAllegro5_GetBackendData();
     al_set_clipboard_text(bd->Display, text);
 }
 #endif
 
-static ImGuiKey ImGui_ImplAllegro5_KeyCodeToImGuiKey(int key_code)
+// Not static to allow third-party code to use that if they want to (but undocumented)
+ImGuiKey ImGui_ImplAllegro5_KeyCodeToImGuiKey(int key_code)
 {
     switch (key_code)
     {
@@ -448,9 +452,9 @@ bool ImGui_ImplAllegro5_Init(ALLEGRO_DISPLAY* display)
     bd->VertexDecl = al_create_vertex_decl(elems, sizeof(ImDrawVertAllegro));
 
 #if ALLEGRO_HAS_CLIPBOARD
-    io.SetClipboardTextFn = ImGui_ImplAllegro5_SetClipboardText;
-    io.GetClipboardTextFn = ImGui_ImplAllegro5_GetClipboardText;
-    io.ClipboardUserData = nullptr;
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.Platform_SetClipboardTextFn = ImGui_ImplAllegro5_SetClipboardText;
+    platform_io.Platform_GetClipboardTextFn = ImGui_ImplAllegro5_GetClipboardText;
 #endif
 
     return true;

backends/imgui_impl_glfw.cpp

@@ -21,9 +21,19 @@
 // - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
 // - Introduction, links and more at the top of imgui.cpp
 
+// About Emscripten support:
+// - Emscripten provides its own GLFW (3.2.1) implementation (syntax: "-sUSE_GLFW=3"), but Joystick is broken and several features are not supported (multiple windows, clipboard, timer, etc.)
+// - A third-party Emscripten GLFW (3.4.0) implementation (syntax: "--use-port=contrib.glfw3") fixes the Joystick issue and implements all relevant features for the browser.
+// See https://github.com/pongasoft/emscripten-glfw/blob/master/docs/Comparison.md for details.
+
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
 //  2024-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface.
+//  2024-08-22: moved some OS/backend related function pointers from ImGuiIO to ImGuiPlatformIO:
+//               - io.GetClipboardTextFn    -> platform_io.Platform_GetClipboardTextFn
+//               - io.SetClipboardTextFn    -> platform_io.Platform_SetClipboardTextFn
+//               - io.PlatformOpenInShellFn -> platform_io.Platform_OpenInShellFn
+//  2024-07-31: Added ImGui_ImplGlfw_Sleep() helper function for usage by our examples app, since GLFW doesn't provide one.
 //  2024-07-08: *BREAKING* Renamed ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback to ImGui_ImplGlfw_InstallEmscriptenCallbacks(), added GLFWWindow* parameter.
 //  2024-07-08: Emscripten: Added support for GLFW3 contrib port (GLFW 3.4.0 features + bug fixes): to enable, replace -sUSE_GLFW=3 with --use-port=contrib.glfw3 (requires emscripten 3.1.59+) (https://github.com/pongasoft/emscripten-glfw)
 //  2024-07-02: Emscripten: Added io.PlatformOpenInShellFn() handler for Emscripten versions.
@@ -104,6 +114,9 @@
 #endif
 #include <GLFW/glfw3native.h>   // for glfwGetCocoaWindow()
 #endif
+#ifndef _WIN32
+#include <unistd.h>             // for usleep()
+#endif
 
 #ifdef __EMSCRIPTEN__
 #include <emscripten.h>
@@ -202,19 +215,12 @@ static void ImGui_ImplGlfw_InitPlatformInterface();
 static void ImGui_ImplGlfw_ShutdownPlatformInterface();
 
 // Functions
-static const char* ImGui_ImplGlfw_GetClipboardText(void* user_data)
-{
-    return glfwGetClipboardString((GLFWwindow*)user_data);
-}
 
-static void ImGui_ImplGlfw_SetClipboardText(void* user_data, const char* text)
+// Not static to allow third-party code to use that if they want to (but undocumented)
+ImGuiKey ImGui_ImplGlfw_KeyToImGuiKey(int keycode, int scancode)
 {
-    glfwSetClipboardString((GLFWwindow*)user_data, text);
-}
-
-static ImGuiKey ImGui_ImplGlfw_KeyToImGuiKey(int key)
-{
-    switch (key)
+    IM_UNUSED(scancode);
+    switch (keycode)
     {
         case GLFW_KEY_TAB: return ImGuiKey_Tab;
         case GLFW_KEY_LEFT: return ImGuiKey_LeftArrow;
@@ -382,6 +388,7 @@ void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yo
     io.AddMouseWheelEvent((float)xoffset, (float)yoffset);
 }
 
+// FIXME: should this be baked into ImGui_ImplGlfw_KeyToImGuiKey()? then what about the values passed to io.SetKeyEventNativeData()?
 static int ImGui_ImplGlfw_TranslateUntranslatedKey(int key, int scancode)
 {
 #if GLFW_HAS_GETKEYNAME && !defined(EMSCRIPTEN_USE_EMBEDDED_GLFW3)
@@ -432,7 +439,7 @@ void ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int keycode, int scancode, i
     keycode = ImGui_ImplGlfw_TranslateUntranslatedKey(keycode, scancode);
 
     ImGuiIO& io = ImGui::GetIO();
-    ImGuiKey imgui_key = ImGui_ImplGlfw_KeyToImGuiKey(keycode);
+    ImGuiKey imgui_key = ImGui_ImplGlfw_KeyToImGuiKey(keycode, scancode);
     io.AddKeyEvent(imgui_key, (action == GLFW_PRESS));
     io.SetKeyEventNativeData(imgui_key, keycode, scancode); // To support legacy indexing (<1.87 user code)
 }
@@ -578,7 +585,11 @@ void ImGui_ImplGlfw_SetCallbacksChainForAllWindows(bool chain_for_all_windows)
 }
 
 #ifdef __EMSCRIPTEN__
-EM_JS(void, ImGui_ImplGlfw_EmscriptenOpenURL, (char const* url), { url = url ? UTF8ToString(url) : null; if (url) window.open(url, '_blank'); });
+#if EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3 >= 34020240817
+void ImGui_ImplGlfw_EmscriptenOpenURL(const char* url) { if (url) emscripten::glfw3::OpenURL(url); }
+#else
+EM_JS(void, ImGui_ImplGlfw_EmscriptenOpenURL, (const char* url), { url = url ? UTF8ToString(url) : null; if (url) window.open(url, '_blank'); });
+#endif
 #endif
 
 static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, GlfwClientApi client_api)
@@ -605,11 +616,11 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
     bd->Time = 0.0;
     bd->WantUpdateMonitors = true;
 
-    io.SetClipboardTextFn = ImGui_ImplGlfw_SetClipboardText;
-    io.GetClipboardTextFn = ImGui_ImplGlfw_GetClipboardText;
-    io.ClipboardUserData = bd->Window;
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.Platform_SetClipboardTextFn = [](ImGuiContext*, const char* text) { glfwSetClipboardString(NULL, text); };
+    platform_io.Platform_GetClipboardTextFn = [](ImGuiContext*) { return glfwGetClipboardString(NULL); };
 #ifdef __EMSCRIPTEN__
-    io.PlatformOpenInShellFn = [](ImGuiContext*, const char* url) { ImGui_ImplGlfw_EmscriptenOpenURL(url); return true; };
+    platform_io.Platform_OpenInShellFn = [](ImGuiContext*, const char* url) { ImGui_ImplGlfw_EmscriptenOpenURL(url); return true; };
 #endif
 
     // Create mouse cursors
@@ -642,7 +653,8 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
     if (install_callbacks)
         ImGui_ImplGlfw_InstallCallbacks(window);
 
-    // Update monitors the first time (note: monitor callback are broken in GLFW 3.2 and earlier, see github.com/glfw/glfw/issues/784)
+    // Update monitor a first time during init
+    // (note: monitor callback are broken in GLFW 3.2 and earlier, see github.com/glfw/glfw/issues/784)
     ImGui_ImplGlfw_UpdateMonitors();
     glfwSetMonitorCallback(ImGui_ImplGlfw_MonitorCallback);
 
@@ -666,6 +678,23 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
     ::SetWindowLongPtrW((HWND)main_viewport->PlatformHandleRaw, GWLP_WNDPROC, (LONG_PTR)ImGui_ImplGlfw_WndProc);
 #endif
 
+    // Emscripten: the same application can run on various platforms, so we detect the Apple platform at runtime
+    // to override io.ConfigMacOSXBehaviors from its default (which is always false in Emscripten).
+#ifdef __EMSCRIPTEN__
+#if EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3 >= 34020240817
+    if (emscripten::glfw3::IsRuntimePlatformApple())
+    {
+        ImGui::GetIO().ConfigMacOSXBehaviors = true;
+
+        // Due to how the browser (poorly) handles the Meta Key, this line essentially disables repeats when used.
+        // This means that Meta + V only registers a single key-press, even if the keys are held.
+        // This is a compromise for dealing with this issue in ImGui since ImGui implements key repeat itself.
+        // See https://github.com/pongasoft/emscripten-glfw/blob/v3.4.0.20240817/docs/Usage.md#the-problem-of-the-super-key
+        emscripten::glfw3::SetSuperPlusKeyTimeouts(10, 10);
+    }
+#endif
+#endif
+
     bd->ClientApi = client_api;
     return true;
 }
@@ -902,6 +931,8 @@ static void ImGui_ImplGlfw_UpdateMonitors()
         // Warning: the validity of monitor DPI information on Windows depends on the application DPI awareness settings, which generally needs to be set in the manifest or at runtime.
         float x_scale, y_scale;
         glfwGetMonitorContentScale(glfw_monitors[n], &x_scale, &y_scale);
+        if (x_scale == 0.0f)
+            continue; // Some accessibility applications are declaring virtual monitors with a DPI of 0, see #7902.
         monitor.DpiScale = x_scale;
 #endif
         monitor.PlatformHandle = (void*)glfw_monitors[n]; // [...] GLFW doc states: "guaranteed to be valid only until the monitor configuration changes"
@@ -941,6 +972,16 @@ void ImGui_ImplGlfw_NewFrame()
     ImGui_ImplGlfw_UpdateGamepads();
 }
 
+// GLFW doesn't provide a portable sleep function
+void ImGui_ImplGlfw_Sleep(int milliseconds)
+{
+#ifdef _WIN32
+    ::Sleep(milliseconds);
+#else
+    usleep(milliseconds * 1000);
+#endif
+}
+
 #ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3
 static EM_BOOL ImGui_ImplGlfw_OnCanvasSizeChange(int event_type, const EmscriptenUiEvent* event, void* user_data)
 {

backends/imgui_impl_glfw.h

@@ -61,4 +61,7 @@ IMGUI_IMPL_API void     ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int key,
 IMGUI_IMPL_API void     ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c);
 IMGUI_IMPL_API void     ImGui_ImplGlfw_MonitorCallback(GLFWmonitor* monitor, int event);
 
+// GLFW helpers
+IMGUI_IMPL_API void     ImGui_ImplGlfw_Sleep(int milliseconds);
+
 #endif // #ifndef IMGUI_DISABLE

backends/imgui_impl_osx.mm

@@ -34,6 +34,10 @@
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
 //  2024-XX-XX: Added support for multiple windows via the ImGuiPlatformIO interface.
+//  2024-08-22: moved some OS/backend related function pointers from ImGuiIO to ImGuiPlatformIO:
+//               - io.GetClipboardTextFn    -> platform_io.Platform_GetClipboardTextFn
+//               - io.SetClipboardTextFn    -> platform_io.Platform_SetClipboardTextFn
+//               - io.PlatformSetImeDataFn  -> platform_io.Platform_SetImeDataFn
 //  2024-07-02: Update for io.SetPlatformImeDataFn() -> io.PlatformSetImeDataFn() renaming in main library.
 //  2023-10-05: Inputs: Added support for extra ImGuiKey values: F13 to F20 function keys. Stopped mapping F13 into PrintScreen.
 //  2023-04-09: Inputs: Added support for io.AddMouseSourceEvent() to discriminate ImGuiMouseSource_Mouse/ImGuiMouseSource_Pen.
@@ -285,7 +289,9 @@ static bool ImGui_ImplOSX_HandleEvent(NSEvent* event, NSView* view);
 @end
 
 // Functions
-static ImGuiKey ImGui_ImplOSX_KeyCodeToImGuiKey(int key_code)
+
+// Not static to allow third-party code to use that if they want to (but undocumented)
+ImGuiKey ImGui_ImplOSX_KeyCodeToImGuiKey(int key_code)
 {
     switch (key_code)
     {
@@ -423,6 +429,7 @@ IMGUI_IMPL_API void ImGui_ImplOSX_NewFrame(void* _Nullable view) {
 bool ImGui_ImplOSX_Init(NSView* view)
 {
     ImGuiIO& io = ImGui::GetIO();
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
     IMGUI_CHECKVERSION();
     IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");
 
@@ -458,14 +465,14 @@ bool ImGui_ImplOSX_Init(NSView* view)
     // Note that imgui.cpp also include default OSX clipboard handlers which can be enabled
     // by adding '#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS' in imconfig.h and adding '-framework ApplicationServices' to your linker command-line.
     // Since we are already in ObjC land here, it is easy for us to add a clipboard handler using the NSPasteboard api.
-    io.SetClipboardTextFn = [](void*, const char* str) -> void
+    platform_io.Platform_SetClipboardTextFn = [](ImGuiContext*, const char* str) -> void
     {
         NSPasteboard* pasteboard = [NSPasteboard generalPasteboard];
         [pasteboard declareTypes:[NSArray arrayWithObject:NSPasteboardTypeString] owner:nil];
         [pasteboard setString:[NSString stringWithUTF8String:str] forType:NSPasteboardTypeString];
     };
 
-    io.GetClipboardTextFn = [](void*) -> const char*
+    platform_io.Platform_GetClipboardTextFn = [](ImGuiContext*) -> const char*
     {
         NSPasteboard* pasteboard = [NSPasteboard generalPasteboard];
         NSString* available = [pasteboard availableTypeFromArray: [NSArray arrayWithObject:NSPasteboardTypeString]];
@@ -500,7 +507,7 @@ bool ImGui_ImplOSX_Init(NSView* view)
     [view addSubview:bd->KeyEventResponder];
     ImGui_ImplOSX_AddTrackingArea(view);
 
-    io.PlatformSetImeDataFn = [](ImGuiContext*, ImGuiViewport* viewport, ImGuiPlatformImeData* data) -> void
+    platform_io.Platform_SetImeDataFn = [](ImGuiContext*, ImGuiViewport* viewport, ImGuiPlatformImeData* data) -> void
     {
         ImGui_ImplOSX_Data* bd = ImGui_ImplOSX_GetBackendData();
         if (data->WantVisible)

backends/imgui_impl_sdl2.cpp

@@ -26,6 +26,14 @@
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
 //  2024-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface.
+//  2024-09-09: use SDL_Vulkan_GetDrawableSize() when available. (#7967, #3190)
+//  2024-08-22: moved some OS/backend related function pointers from ImGuiIO to ImGuiPlatformIO:
+//               - io.GetClipboardTextFn    -> platform_io.Platform_GetClipboardTextFn
+//               - io.SetClipboardTextFn    -> platform_io.Platform_SetClipboardTextFn
+//               - io.PlatformOpenInShellFn -> platform_io.Platform_OpenInShellFn
+//               - io.PlatformSetImeDataFn  -> platform_io.Platform_SetImeDataFn
+//  2024-08-19: Storing SDL's Uint32 WindowID inside ImGuiViewport::PlatformHandle instead of SDL_Window*.
+//  2024-08-19: ImGui_ImplSDL2_ProcessEvent() now ignores events intended for other SDL windows. (#7853)
 //  2024-07-02: Emscripten: Added io.PlatformOpenInShellFn() handler for Emscripten versions.
 //  2024-07-02: Update for io.SetPlatformImeDataFn() -> io.PlatformSetImeDataFn() renaming in main library.
 //  2024-02-14: Inputs: Handle gamepad disconnection. Added ImGui_ImplSDL2_SetGamepadMode().
@@ -116,7 +124,10 @@
 #define SDL_HAS_PER_MONITOR_DPI             SDL_VERSION_ATLEAST(2,0,4)
 #define SDL_HAS_VULKAN                      SDL_VERSION_ATLEAST(2,0,6)
 #define SDL_HAS_DISPLAY_EVENT               SDL_VERSION_ATLEAST(2,0,9)
-#if !SDL_HAS_VULKAN
+#define SDL_HAS_SHOW_WINDOW_ACTIVATION_HINT SDL_VERSION_ATLEAST(2,0,18)
+#if SDL_HAS_VULKAN
+extern "C" { extern DECLSPEC void SDLCALL SDL_Vulkan_GetDrawableSize(SDL_Window* window, int* w, int* h); }
+#elif
 static const Uint32 SDL_WINDOW_VULKAN = 0x10000000;
 #endif
 
@@ -124,6 +135,7 @@ static const Uint32 SDL_WINDOW_VULKAN = 0x10000000;
 struct ImGui_ImplSDL2_Data
 {
     SDL_Window*             Window;
+    Uint32                  WindowID;
     SDL_Renderer*           Renderer;
     Uint64                  Time;
     char*                   ClipboardTextData;
@@ -162,7 +174,7 @@ static void ImGui_ImplSDL2_InitPlatformInterface(SDL_Window* window, void* sdl_g
 static void ImGui_ImplSDL2_ShutdownPlatformInterface();
 
 // Functions
-static const char* ImGui_ImplSDL2_GetClipboardText(void*)
+static const char* ImGui_ImplSDL2_GetClipboardText(ImGuiContext*)
 {
     ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
     if (bd->ClipboardTextData)
@@ -171,7 +183,7 @@ static const char* ImGui_ImplSDL2_GetClipboardText(void*)
     return bd->ClipboardTextData;
 }
 
-static void ImGui_ImplSDL2_SetClipboardText(void*, const char* text)
+static void ImGui_ImplSDL2_SetClipboardText(ImGuiContext*, const char* text)
 {
     SDL_SetClipboardText(text);
 }
@@ -190,7 +202,8 @@ static void ImGui_ImplSDL2_PlatformSetImeData(ImGuiContext*, ImGuiViewport* view
     }
 }
 
-static ImGuiKey ImGui_ImplSDL2_KeyEventToImGuiKey(SDL_Keycode keycode, SDL_Scancode scancode)
+// Not static to allow third-party code to use that if they want to (but undocumented)
+ImGuiKey ImGui_ImplSDL2_KeyEventToImGuiKey(SDL_Keycode keycode, SDL_Scancode scancode)
 {
     IM_UNUSED(scancode);
     switch (keycode)
@@ -328,11 +341,15 @@ static void ImGui_ImplSDL2_UpdateKeyModifiers(SDL_Keymod sdl_key_mods)
     io.AddKeyEvent(ImGuiMod_Super, (sdl_key_mods & KMOD_GUI) != 0);
 }
 
+static ImGuiViewport* ImGui_ImplSDL2_GetViewportForWindowID(Uint32 window_id)
+{
+    return ImGui::FindViewportByPlatformHandle((void*)(intptr_t)window_id);
+}
+
 // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
 // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
 // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
 // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
-// If you have multiple SDL events and some of them are not meant to be used by dear imgui, you may need to filter events based on their windowID field.
 bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
 {
     ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
@@ -343,6 +360,8 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
     {
         case SDL_MOUSEMOTION:
         {
+            if (ImGui_ImplSDL2_GetViewportForWindowID(event->motion.windowID) == NULL)
+                return false;
             ImVec2 mouse_pos((float)event->motion.x, (float)event->motion.y);
             if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
             {
@@ -357,6 +376,8 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
         }
         case SDL_MOUSEWHEEL:
         {
+            if (ImGui_ImplSDL2_GetViewportForWindowID(event->wheel.windowID) == NULL)
+                return false;
             //IMGUI_DEBUG_LOG("wheel %.2f %.2f, precise %.2f %.2f\n", (float)event->wheel.x, (float)event->wheel.y, event->wheel.preciseX, event->wheel.preciseY);
 #if SDL_VERSION_ATLEAST(2,0,18) // If this fails to compile on Emscripten: update to latest Emscripten!
             float wheel_x = -event->wheel.preciseX;
@@ -375,6 +396,8 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
         case SDL_MOUSEBUTTONDOWN:
         case SDL_MOUSEBUTTONUP:
         {
+            if (ImGui_ImplSDL2_GetViewportForWindowID(event->button.windowID) == NULL)
+                return false;
             int mouse_button = -1;
             if (event->button.button == SDL_BUTTON_LEFT) { mouse_button = 0; }
             if (event->button.button == SDL_BUTTON_RIGHT) { mouse_button = 1; }
@@ -390,12 +413,16 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
         }
         case SDL_TEXTINPUT:
         {
+            if (ImGui_ImplSDL2_GetViewportForWindowID(event->text.windowID) == NULL)
+                return false;
             io.AddInputCharactersUTF8(event->text.text);
             return true;
         }
         case SDL_KEYDOWN:
         case SDL_KEYUP:
         {
+            if (ImGui_ImplSDL2_GetViewportForWindowID(event->key.windowID) == NULL)
+                return false;
             ImGui_ImplSDL2_UpdateKeyModifiers((SDL_Keymod)event->key.keysym.mod);
             ImGuiKey key = ImGui_ImplSDL2_KeyEventToImGuiKey(event->key.keysym.sym, event->key.keysym.scancode);
             io.AddKeyEvent(key, (event->type == SDL_KEYDOWN));
@@ -413,6 +440,10 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
 #endif
         case SDL_WINDOWEVENT:
         {
+            ImGuiViewport* viewport = ImGui_ImplSDL2_GetViewportForWindowID(event->window.windowID);
+            if (viewport == NULL)
+                return false;
+
             // - When capturing mouse, SDL will send a bunch of conflicting LEAVE/ENTER event on every mouse move, but the final ENTER tends to be right.
             // - However we won't get a correct LEAVE event for a captured window.
             // - In some cases, when detaching a window from main viewport SDL may send SDL_WINDOWEVENT_ENTER one frame too late,
@@ -430,17 +461,12 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
                 io.AddFocusEvent(true);
             else if (window_event == SDL_WINDOWEVENT_FOCUS_LOST)
                 io.AddFocusEvent(false);
-            if (window_event == SDL_WINDOWEVENT_CLOSE || window_event == SDL_WINDOWEVENT_MOVED || window_event == SDL_WINDOWEVENT_RESIZED)
-                if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle((void*)SDL_GetWindowFromID(event->window.windowID)))
-                {
-                    if (window_event == SDL_WINDOWEVENT_CLOSE)
-                        viewport->PlatformRequestClose = true;
-                    if (window_event == SDL_WINDOWEVENT_MOVED)
-                        viewport->PlatformRequestMove = true;
-                    if (window_event == SDL_WINDOWEVENT_RESIZED)
-                        viewport->PlatformRequestResize = true;
-                    return true;
-                }
+            else if (window_event == SDL_WINDOWEVENT_CLOSE)
+                viewport->PlatformRequestClose = true;
+            else if (window_event == SDL_WINDOWEVENT_MOVED)
+                viewport->PlatformRequestMove = true;
+            else if (window_event == SDL_WINDOWEVENT_RESIZED)
+                viewport->PlatformRequestResize = true;
             return true;
         }
         case SDL_CONTROLLERDEVICEADDED:
@@ -484,6 +510,7 @@ static bool ImGui_ImplSDL2_Init(SDL_Window* window, SDL_Renderer* renderer, void
         io.BackendFlags |= ImGuiBackendFlags_PlatformHasViewports;  // We can create multi-viewports on the Platform side (optional)
 
     bd->Window = window;
+    bd->WindowID = SDL_GetWindowID(window);
     bd->Renderer = renderer;
 
     // SDL on Linux/OSX doesn't report events for unfocused windows (see https://github.com/ocornut/imgui/issues/4960)
@@ -494,16 +521,19 @@ static bool ImGui_ImplSDL2_Init(SDL_Window* window, SDL_Renderer* renderer, void
 #else
     bd->MouseCanReportHoveredViewport = false;
 #endif
-    bd->WantUpdateMonitors = true;
 
-    io.SetClipboardTextFn = ImGui_ImplSDL2_SetClipboardText;
-    io.GetClipboardTextFn = ImGui_ImplSDL2_GetClipboardText;
-    io.ClipboardUserData = nullptr;
-    io.PlatformSetImeDataFn = ImGui_ImplSDL2_PlatformSetImeData;
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.Platform_SetClipboardTextFn = ImGui_ImplSDL2_SetClipboardText;
+    platform_io.Platform_GetClipboardTextFn = ImGui_ImplSDL2_GetClipboardText;
+    platform_io.Platform_ClipboardUserData = nullptr;
+    platform_io.Platform_SetImeDataFn = ImGui_ImplSDL2_PlatformSetImeData;
 #ifdef __EMSCRIPTEN__
-    io.PlatformOpenInShellFn = [](ImGuiContext*, const char* url) { ImGui_ImplSDL2_EmscriptenOpenURL(url); return true; };
+    platform_io.Platform_OpenInShellFn = [](ImGuiContext*, const char* url) { ImGui_ImplSDL2_EmscriptenOpenURL(url); return true; };
 #endif
 
+    // Update monitor a first time during init
+    ImGui_ImplSDL2_UpdateMonitors();
+
     // Gamepad handling
     bd->GamepadMode = ImGui_ImplSDL2_GamepadMode_AutoFirst;
     bd->WantUpdateGamepadsList = true;
@@ -522,7 +552,7 @@ static bool ImGui_ImplSDL2_Init(SDL_Window* window, SDL_Renderer* renderer, void
     // Set platform dependent data in viewport
     // Our mouse update function expect PlatformHandle to be filled for the main viewport
     ImGuiViewport* main_viewport = ImGui::GetMainViewport();
-    main_viewport->PlatformHandle = (void*)window;
+    main_viewport->PlatformHandle = (void*)(intptr_t)bd->WindowID;
     main_viewport->PlatformHandleRaw = nullptr;
     SDL_SysWMinfo info;
     SDL_VERSION(&info.version);
@@ -637,7 +667,7 @@ static void ImGui_ImplSDL2_UpdateMouseData()
     // SDL_CaptureMouse() let the OS know e.g. that our imgui drag outside the SDL window boundaries shouldn't e.g. trigger other operations outside
     SDL_CaptureMouse((bd->MouseButtonsDown != 0) ? SDL_TRUE : SDL_FALSE);
     SDL_Window* focused_window = SDL_GetKeyboardFocus();
-    const bool is_app_focused = (focused_window && (bd->Window == focused_window || ImGui::FindViewportByPlatformHandle((void*)focused_window)));
+    const bool is_app_focused = (focused_window && (bd->Window == focused_window || ImGui_ImplSDL2_GetViewportForWindowID(SDL_GetWindowID(focused_window)) != NULL));
 #else
     SDL_Window* focused_window = bd->Window;
     const bool is_app_focused = (SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_INPUT_FOCUS) != 0; // SDL 2.0.3 and non-windowed systems: single-viewport only
@@ -683,9 +713,8 @@ static void ImGui_ImplSDL2_UpdateMouseData()
     if (io.BackendFlags & ImGuiBackendFlags_HasMouseHoveredViewport)
     {
         ImGuiID mouse_viewport_id = 0;
-        if (SDL_Window* sdl_mouse_window = SDL_GetWindowFromID(bd->MouseWindowID))
-            if (ImGuiViewport* mouse_viewport = ImGui::FindViewportByPlatformHandle((void*)sdl_mouse_window))
-                mouse_viewport_id = mouse_viewport->ID;
+        if (ImGuiViewport* mouse_viewport = ImGui_ImplSDL2_GetViewportForWindowID(bd->MouseWindowID))
+            mouse_viewport_id = mouse_viewport->ID;
         io.AddMouseViewportEvent(mouse_viewport_id);
     }
 }
@@ -847,7 +876,11 @@ static void ImGui_ImplSDL2_UpdateMonitors()
         //  DpiScale to cocoa_window.backingScaleFactor here.
         float dpi = 0.0f;
         if (!SDL_GetDisplayDPI(n, &dpi, nullptr, nullptr))
+        {
+            if (dpi <= 0.0f)
+                continue; // Some accessibility applications are declaring virtual monitors with a DPI of 0, see #7902.
             monitor.DpiScale = dpi / 96.0f;
+        }
 #endif
         monitor.PlatformHandle = (void*)(intptr_t)n;
         platform_io.Monitors.push_back(monitor);
@@ -868,6 +901,10 @@ void ImGui_ImplSDL2_NewFrame()
         w = h = 0;
     if (bd->Renderer != nullptr)
         SDL_GetRendererOutputSize(bd->Renderer, &display_w, &display_h);
+#if SDL_HAS_VULKAN
+    else if (SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_VULKAN)
+        SDL_Vulkan_GetDrawableSize(bd->Window, &display_w, &display_h);
+#endif
     else
         SDL_GL_GetDrawableSize(bd->Window, &display_w, &display_h);
     io.DisplaySize = ImVec2((float)w, (float)h);
@@ -968,7 +1005,7 @@ static void ImGui_ImplSDL2_CreateWindow(ImGuiViewport* viewport)
     if (use_opengl && backup_context)
         SDL_GL_MakeCurrent(vd->Window, backup_context);
 
-    viewport->PlatformHandle = (void*)vd->Window;
+    viewport->PlatformHandle = (void*)(intptr_t)SDL_GetWindowID(vd->Window);
     viewport->PlatformHandleRaw = nullptr;
     SDL_SysWMinfo info;
     SDL_VERSION(&info.version);
@@ -1012,7 +1049,11 @@ static void ImGui_ImplSDL2_ShowWindow(ImGuiViewport* viewport)
         ex_style |= WS_EX_TOOLWINDOW;
         ::SetWindowLong(hwnd, GWL_EXSTYLE, ex_style);
     }
+#endif
 
+#if SDL_HAS_SHOW_WINDOW_ACTIVATION_HINT
+    SDL_SetHint(SDL_HINT_WINDOW_NO_ACTIVATION_WHEN_SHOWN, (viewport->Flags & ImGuiViewportFlags_NoFocusOnAppearing) ? "1" : "0");
+#elif defined(_WIN32)
     // SDL hack: SDL always activate/focus windows :/
     if (viewport->Flags & ImGuiViewportFlags_NoFocusOnAppearing)
     {
@@ -1020,7 +1061,6 @@ static void ImGui_ImplSDL2_ShowWindow(ImGuiViewport* viewport)
         return;
     }
 #endif
-
     SDL_ShowWindow(vd->Window);
 }
 
@@ -1147,7 +1187,7 @@ static void ImGui_ImplSDL2_InitPlatformInterface(SDL_Window* window, void* sdl_g
     vd->WindowOwned = false;
     vd->GLContext = sdl_gl_context;
     main_viewport->PlatformUserData = vd;
-    main_viewport->PlatformHandle = vd->Window;
+    main_viewport->PlatformHandle = (void*)(intptr_t)vd->WindowID;
 }
 
 static void ImGui_ImplSDL2_ShutdownPlatformInterface()

backends/imgui_impl_sdl3.cpp

@@ -2,7 +2,7 @@
 // This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
 // (Info: SDL3 is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc.)
 
-// (**IMPORTANT: SDL 3.0.0 is NOT YET RELEASED AND CURRENTLY HAS A FAST CHANGING API. THIS CODE BREAKS OFTEN**)
+// (**IMPORTANT: SDL 3.0.0 is NOT YET RELEASED AND CURRENTLY HAS A FAST CHANGING API. THIS CODE BREAKS OFTEN AS SDL3 CHANGES.**)
 
 // Implemented features:
 //  [X] Platform: Clipboard support.
@@ -13,7 +13,6 @@
 //  [x] Platform: Multi-viewport support (multiple windows). Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable' -> the OS animation effect when window gets created/destroyed is problematic. SDL2 backend doesn't have issue.
 // Issues:
 //  [ ] Platform: Multi-viewport: Minimized windows seems to break mouse wheel events (at least under Windows).
-//  [ ] Platform: Multi-viewport: ParentViewportID not honored, and so io.ConfigViewportsNoDefaultParent has no effect (minor).
 
 // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
@@ -26,6 +25,14 @@
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
 //  2024-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface.
+//  2024-09-11: (Docking) Added support for viewport->ParentViewportId field to support parenting at OS level. (#7973)
+//  2024-09-03: Update for SDL3 api changes: SDL_GetGamepads() memory ownership revert. (#7918, #7898, #7807)
+//  2024-08-22: moved some OS/backend related function pointers from ImGuiIO to ImGuiPlatformIO:
+//               - io.GetClipboardTextFn    -> platform_io.Platform_GetClipboardTextFn
+//               - io.SetClipboardTextFn    -> platform_io.Platform_SetClipboardTextFn
+//               - io.PlatformSetImeDataFn  -> platform_io.Platform_SetImeDataFn
+//  2024-08-19: Storing SDL_WindowID inside ImGuiViewport::PlatformHandle instead of SDL_Window*.
+//  2024-08-19: ImGui_ImplSDL3_ProcessEvent() now ignores events intended for other SDL windows. (#7853)
 //  2024-07-22: Update for SDL3 api changes: SDL_GetGamepads() memory ownership change. (#7807)
 //  2024-07-18: Update for SDL3 api changes: SDL_GetClipboardText() memory ownership change. (#7801)
 //  2024-07-15: Update for SDL3 api changes: SDL_GetProperty() change to SDL_GetPointerProperty(). (#7794)
@@ -85,6 +92,7 @@
 struct ImGui_ImplSDL3_Data
 {
     SDL_Window*             Window;
+    SDL_WindowID            WindowID;
     SDL_Renderer*           Renderer;
     Uint64                  Time;
     char*                   ClipboardTextData;
@@ -126,7 +134,7 @@ static void ImGui_ImplSDL3_InitPlatformInterface(SDL_Window* window, void* sdl_g
 static void ImGui_ImplSDL3_ShutdownPlatformInterface();
 
 // Functions
-static const char* ImGui_ImplSDL3_GetClipboardText(void*)
+static const char* ImGui_ImplSDL3_GetClipboardText(ImGuiContext*)
 {
     ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
     if (bd->ClipboardTextData)
@@ -136,7 +144,7 @@ static const char* ImGui_ImplSDL3_GetClipboardText(void*)
     return bd->ClipboardTextData;
 }
 
-static void ImGui_ImplSDL3_SetClipboardText(void*, const char* text)
+static void ImGui_ImplSDL3_SetClipboardText(ImGuiContext*, const char* text)
 {
     SDL_SetClipboardText(text);
 }
@@ -144,7 +152,8 @@ static void ImGui_ImplSDL3_SetClipboardText(void*, const char* text)
 static void ImGui_ImplSDL3_PlatformSetImeData(ImGuiContext*, ImGuiViewport* viewport, ImGuiPlatformImeData* data)
 {
     ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
-    SDL_Window* window = (SDL_Window*)viewport->PlatformHandle;
+    SDL_WindowID window_id = (SDL_WindowID)(intptr_t)viewport->PlatformHandle;
+    SDL_Window* window = SDL_GetWindowFromID(window_id);
     if ((data->WantVisible == false || bd->ImeWindow != window) && bd->ImeWindow != NULL)
     {
         SDL_StopTextInput(bd->ImeWindow);
@@ -163,7 +172,8 @@ static void ImGui_ImplSDL3_PlatformSetImeData(ImGuiContext*, ImGuiViewport* view
     }
 }
 
-static ImGuiKey ImGui_ImplSDL3_KeyEventToImGuiKey(SDL_Keycode keycode, SDL_Scancode scancode)
+// Not static to allow third-party code to use that if they want to (but undocumented)
+ImGuiKey ImGui_ImplSDL3_KeyEventToImGuiKey(SDL_Keycode keycode, SDL_Scancode scancode)
 {
     // Keypad doesn't have individual key values in SDL3
     switch (scancode)
@@ -305,11 +315,15 @@ static void ImGui_ImplSDL3_UpdateKeyModifiers(SDL_Keymod sdl_key_mods)
     io.AddKeyEvent(ImGuiMod_Super, (sdl_key_mods & SDL_KMOD_GUI) != 0);
 }
 
+static ImGuiViewport* ImGui_ImplSDL3_GetViewportForWindowID(SDL_WindowID window_id)
+{
+    return ImGui::FindViewportByPlatformHandle((void*)(intptr_t)window_id);
+}
+
 // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
 // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
 // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
 // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
-// If you have multiple SDL events and some of them are not meant to be used by dear imgui, you may need to filter events based on their windowID field.
 bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
 {
     ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
@@ -320,6 +334,8 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
     {
         case SDL_EVENT_MOUSE_MOTION:
         {
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->motion.windowID) == NULL)
+                return false;
             ImVec2 mouse_pos((float)event->motion.x, (float)event->motion.y);
             if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
             {
@@ -334,6 +350,8 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
         }
         case SDL_EVENT_MOUSE_WHEEL:
         {
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->wheel.windowID) == NULL)
+                return false;
             //IMGUI_DEBUG_LOG("wheel %.2f %.2f, precise %.2f %.2f\n", (float)event->wheel.x, (float)event->wheel.y, event->wheel.preciseX, event->wheel.preciseY);
             float wheel_x = -event->wheel.x;
             float wheel_y = event->wheel.y;
@@ -347,6 +365,8 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
         case SDL_EVENT_MOUSE_BUTTON_DOWN:
         case SDL_EVENT_MOUSE_BUTTON_UP:
         {
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->button.windowID) == NULL)
+                return false;
             int mouse_button = -1;
             if (event->button.button == SDL_BUTTON_LEFT) { mouse_button = 0; }
             if (event->button.button == SDL_BUTTON_RIGHT) { mouse_button = 1; }
@@ -362,12 +382,16 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
         }
         case SDL_EVENT_TEXT_INPUT:
         {
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->text.windowID) == NULL)
+                return false;
             io.AddInputCharactersUTF8(event->text.text);
             return true;
         }
         case SDL_EVENT_KEY_DOWN:
         case SDL_EVENT_KEY_UP:
         {
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->key.windowID) == NULL)
+                return false;
             //IMGUI_DEBUG_LOG("SDL_EVENT_KEY_%d: key=%d, scancode=%d, mod=%X\n", (event->type == SDL_EVENT_KEY_DOWN) ? "DOWN" : "UP", event->key.key, event->key.scancode, event->key.mod);
             ImGui_ImplSDL3_UpdateKeyModifiers((SDL_Keymod)event->key.mod);
             ImGuiKey key = ImGui_ImplSDL3_KeyEventToImGuiKey(event->key.key, event->key.scancode);
@@ -386,6 +410,8 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
         }
         case SDL_EVENT_WINDOW_MOUSE_ENTER:
         {
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->window.windowID) == NULL)
+                return false;
             bd->MouseWindowID = event->window.windowID;
             bd->MousePendingLeaveFrame = 0;
             return true;
@@ -396,29 +422,34 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
         // FIXME: Unconfirmed whether this is still needed with SDL3.
         case SDL_EVENT_WINDOW_MOUSE_LEAVE:
         {
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->window.windowID) == NULL)
+                return false;
             bd->MousePendingLeaveFrame = ImGui::GetFrameCount() + 1;
             return true;
         }
         case SDL_EVENT_WINDOW_FOCUS_GAINED:
-            io.AddFocusEvent(true);
-            return true;
         case SDL_EVENT_WINDOW_FOCUS_LOST:
-            io.AddFocusEvent(false);
+        {
+            if (ImGui_ImplSDL3_GetViewportForWindowID(event->window.windowID) == NULL)
+                return false;
+            io.AddFocusEvent(event->type == SDL_EVENT_WINDOW_FOCUS_GAINED);
             return true;
+        }
         case SDL_EVENT_WINDOW_CLOSE_REQUESTED:
         case SDL_EVENT_WINDOW_MOVED:
         case SDL_EVENT_WINDOW_RESIZED:
-            if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle((void*)SDL_GetWindowFromID(event->window.windowID)))
-            {
-                if (event->type == SDL_EVENT_WINDOW_CLOSE_REQUESTED)
-                    viewport->PlatformRequestClose = true;
-                if (event->type == SDL_EVENT_WINDOW_MOVED)
-                    viewport->PlatformRequestMove = true;
-                if (event->type == SDL_EVENT_WINDOW_RESIZED)
-                    viewport->PlatformRequestResize = true;
-                return true;
-            }
+        {
+            ImGuiViewport* viewport = ImGui_ImplSDL3_GetViewportForWindowID(event->window.windowID);
+            if (viewport == NULL)
+                return false;
+            if (event->type == SDL_EVENT_WINDOW_CLOSE_REQUESTED)
+                viewport->PlatformRequestClose = true;
+            if (event->type == SDL_EVENT_WINDOW_MOVED)
+                viewport->PlatformRequestMove = true;
+            if (event->type == SDL_EVENT_WINDOW_RESIZED)
+                viewport->PlatformRequestResize = true;
             return true;
+        }
         case SDL_EVENT_GAMEPAD_ADDED:
         case SDL_EVENT_GAMEPAD_REMOVED:
         {
@@ -431,7 +462,7 @@ bool ImGui_ImplSDL3_ProcessEvent(const SDL_Event* event)
 
 static void ImGui_ImplSDL3_SetupPlatformHandles(ImGuiViewport* viewport, SDL_Window* window)
 {
-    viewport->PlatformHandle = window;
+    viewport->PlatformHandle = (void*)(intptr_t)SDL_GetWindowID(window);
     viewport->PlatformHandleRaw = nullptr;
 #if defined(_WIN32) && !defined(__WINRT__)
     viewport->PlatformHandleRaw = (HWND)SDL_GetPointerProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_WIN32_HWND_POINTER, nullptr);
@@ -468,6 +499,7 @@ static bool ImGui_ImplSDL3_Init(SDL_Window* window, SDL_Renderer* renderer, void
         io.BackendFlags |= ImGuiBackendFlags_PlatformHasViewports;  // We can create multi-viewports on the Platform side (optional)
 
     bd->Window = window;
+    bd->WindowID = SDL_GetWindowID(window);
     bd->Renderer = renderer;
 
     // SDL on Linux/OSX doesn't report events for unfocused windows (see https://github.com/ocornut/imgui/issues/4960)
@@ -478,12 +510,14 @@ static bool ImGui_ImplSDL3_Init(SDL_Window* window, SDL_Renderer* renderer, void
 #else
     bd->MouseCanReportHoveredViewport = false;
 #endif
-    bd->WantUpdateMonitors = true;
 
-    io.SetClipboardTextFn = ImGui_ImplSDL3_SetClipboardText;
-    io.GetClipboardTextFn = ImGui_ImplSDL3_GetClipboardText;
-    io.ClipboardUserData = nullptr;
-    io.PlatformSetImeDataFn = ImGui_ImplSDL3_PlatformSetImeData;
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.Platform_SetClipboardTextFn = ImGui_ImplSDL3_SetClipboardText;
+    platform_io.Platform_GetClipboardTextFn = ImGui_ImplSDL3_GetClipboardText;
+    platform_io.Platform_SetImeDataFn = ImGui_ImplSDL3_PlatformSetImeData;
+
+    // Update monitor a first time during init
+    ImGui_ImplSDL3_UpdateMonitors();
 
     // Gamepad handling
     bd->GamepadMode = ImGui_ImplSDL3_GamepadMode_AutoFirst;
@@ -597,7 +631,7 @@ static void ImGui_ImplSDL3_UpdateMouseData()
     // SDL_CaptureMouse() let the OS know e.g. that our imgui drag outside the SDL window boundaries shouldn't e.g. trigger other operations outside
     SDL_CaptureMouse((bd->MouseButtonsDown != 0) ? SDL_TRUE : SDL_FALSE);
     SDL_Window* focused_window = SDL_GetKeyboardFocus();
-    const bool is_app_focused = (focused_window && (bd->Window == focused_window || ImGui::FindViewportByPlatformHandle((void*)focused_window)));
+    const bool is_app_focused = (focused_window && (bd->Window == focused_window || ImGui_ImplSDL3_GetViewportForWindowID(SDL_GetWindowID(focused_window)) != NULL));
 #else
     SDL_Window* focused_window = bd->Window;
     const bool is_app_focused = (SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_INPUT_FOCUS) != 0; // SDL 2.0.3 and non-windowed systems: single-viewport only
@@ -643,9 +677,8 @@ static void ImGui_ImplSDL3_UpdateMouseData()
     if (io.BackendFlags & ImGuiBackendFlags_HasMouseHoveredViewport)
     {
         ImGuiID mouse_viewport_id = 0;
-        if (SDL_Window* sdl_mouse_window = SDL_GetWindowFromID(bd->MouseWindowID))
-            if (ImGuiViewport* mouse_viewport = ImGui::FindViewportByPlatformHandle((void*)sdl_mouse_window))
-                mouse_viewport_id = mouse_viewport->ID;
+        if (ImGuiViewport* mouse_viewport = ImGui_ImplSDL3_GetViewportForWindowID(bd->MouseWindowID))
+            mouse_viewport_id = mouse_viewport->ID;
         io.AddMouseViewportEvent(mouse_viewport_id);
     }
 }
@@ -734,7 +767,7 @@ static void ImGui_ImplSDL3_UpdateGamepads()
     {
         ImGui_ImplSDL3_CloseGamepads();
         int sdl_gamepads_count = 0;
-        const SDL_JoystickID* sdl_gamepads = SDL_GetGamepads(&sdl_gamepads_count);
+        SDL_JoystickID* sdl_gamepads = SDL_GetGamepads(&sdl_gamepads_count);
         for (int n = 0; n < sdl_gamepads_count; n++)
             if (SDL_Gamepad* gamepad = SDL_OpenGamepad(sdl_gamepads[n]))
             {
@@ -743,6 +776,7 @@ static void ImGui_ImplSDL3_UpdateGamepads()
                     break;
             }
         bd->WantUpdateGamepadsList = false;
+        SDL_free(sdl_gamepads);
     }
 
     // FIXME: Technically feeding gamepad shouldn't depend on this now that they are regular inputs.
@@ -789,7 +823,7 @@ static void ImGui_ImplSDL3_UpdateMonitors()
     bd->WantUpdateMonitors = false;
 
     int display_count;
-    const SDL_DisplayID* displays = SDL_GetDisplays(&display_count);
+    SDL_DisplayID* displays = SDL_GetDisplays(&display_count);
     for (int n = 0; n < display_count; n++)
     {
         // Warning: the validity of monitor DPI information on Windows depends on the application DPI awareness settings, which generally needs to be set in the manifest or at runtime.
@@ -806,8 +840,11 @@ static void ImGui_ImplSDL3_UpdateMonitors()
         //  DpiScale to cocoa_window.backingScaleFactor here.
         monitor.DpiScale = SDL_GetDisplayContentScale(display_id);
         monitor.PlatformHandle = (void*)(intptr_t)n;
+        if (monitor.DpiScale <= 0.0f)
+            continue; // Some accessibility applications are declaring virtual monitors with a DPI of 0, see #7902.
         platform_io.Monitors.push_back(monitor);
     }
+    SDL_free(displays);
 }
 
 void ImGui_ImplSDL3_NewFrame()
@@ -871,20 +908,34 @@ void ImGui_ImplSDL3_NewFrame()
 struct ImGui_ImplSDL3_ViewportData
 {
     SDL_Window*     Window;
+    SDL_Window*     ParentWindow;
     Uint32          WindowID;
     bool            WindowOwned;
     SDL_GLContext   GLContext;
 
-    ImGui_ImplSDL3_ViewportData() { Window = nullptr; WindowID = 0; WindowOwned = false; GLContext = nullptr; }
+    ImGui_ImplSDL3_ViewportData() { Window = ParentWindow = nullptr; WindowID = 0; WindowOwned = false; GLContext = nullptr; }
     ~ImGui_ImplSDL3_ViewportData() { IM_ASSERT(Window == nullptr && GLContext == nullptr); }
 };
 
+static SDL_Window* ImGui_ImplSDL3_GetSDLWindowFromViewportID(ImGuiID viewport_id)
+{
+    if (viewport_id != 0)
+        if (ImGuiViewport* viewport = ImGui::FindViewportByID(viewport_id))
+        {
+            SDL_WindowID window_id = (SDL_WindowID)(intptr_t)viewport->PlatformHandle;
+            return SDL_GetWindowFromID(window_id);
+        }
+    return nullptr;
+}
+
 static void ImGui_ImplSDL3_CreateWindow(ImGuiViewport* viewport)
 {
     ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
     ImGui_ImplSDL3_ViewportData* vd = IM_NEW(ImGui_ImplSDL3_ViewportData)();
     viewport->PlatformUserData = vd;
 
+    vd->ParentWindow = ImGui_ImplSDL3_GetSDLWindowFromViewportID(viewport->ParentViewportId);
+
     ImGuiViewport* main_viewport = ImGui::GetMainViewport();
     ImGui_ImplSDL3_ViewportData* main_viewport_data = (ImGui_ImplSDL3_ViewportData*)main_viewport->PlatformUserData;
 
@@ -903,12 +954,10 @@ static void ImGui_ImplSDL3_CreateWindow(ImGuiViewport* viewport)
     sdl_flags |= SDL_GetWindowFlags(bd->Window);
     sdl_flags |= (viewport->Flags & ImGuiViewportFlags_NoDecoration) ? SDL_WINDOW_BORDERLESS : 0;
     sdl_flags |= (viewport->Flags & ImGuiViewportFlags_NoDecoration) ? 0 : SDL_WINDOW_RESIZABLE;
-#if !defined(_WIN32)
-    // See SDL hack in ImGui_ImplSDL3_ShowWindow().
     sdl_flags |= (viewport->Flags & ImGuiViewportFlags_NoTaskBarIcon) ? SDL_WINDOW_UTILITY : 0;
-#endif
     sdl_flags |= (viewport->Flags & ImGuiViewportFlags_TopMost) ? SDL_WINDOW_ALWAYS_ON_TOP : 0;
     vd->Window = SDL_CreateWindow("No Title Yet", (int)viewport->Size.x, (int)viewport->Size.y, sdl_flags);
+    SDL_SetWindowParent(vd->Window, vd->ParentWindow);
     SDL_SetWindowPosition(vd->Window, (int)viewport->Pos.x, (int)viewport->Pos.y);
     vd->WindowOwned = true;
     if (use_opengl)
@@ -943,27 +992,36 @@ static void ImGui_ImplSDL3_ShowWindow(ImGuiViewport* viewport)
 #if defined(_WIN32)
     HWND hwnd = (HWND)viewport->PlatformHandleRaw;
 
-    // SDL hack: Hide icon from task bar
-    // Note: SDL 3.0.0+ has a SDL_WINDOW_UTILITY flag which is supported under Windows but the way it create the window breaks our seamless transition.
-    if (viewport->Flags & ImGuiViewportFlags_NoTaskBarIcon)
+    // SDL hack: Show icon in task bar (#7989)
+    // Note: SDL_WINDOW_UTILITY can be used to control task bar visibility, but on Windows, it does not affect child windows.
+    if (!(viewport->Flags & ImGuiViewportFlags_NoTaskBarIcon))
     {
         LONG ex_style = ::GetWindowLong(hwnd, GWL_EXSTYLE);
-        ex_style &= ~WS_EX_APPWINDOW;
-        ex_style |= WS_EX_TOOLWINDOW;
+        ex_style |= WS_EX_APPWINDOW;
+        ex_style &= ~WS_EX_TOOLWINDOW;
+        ::ShowWindow(hwnd, SW_HIDE);
         ::SetWindowLong(hwnd, GWL_EXSTYLE, ex_style);
     }
-
-    // SDL hack: SDL always activate/focus windows :/
-    if (viewport->Flags & ImGuiViewportFlags_NoFocusOnAppearing)
-    {
-        ::ShowWindow(hwnd, SW_SHOWNA);
-        return;
-    }
 #endif
 
+    SDL_SetHint(SDL_HINT_WINDOW_ACTIVATE_WHEN_SHOWN, (viewport->Flags & ImGuiViewportFlags_NoFocusOnAppearing) ? "0" : "1");
     SDL_ShowWindow(vd->Window);
 }
 
+static void ImGui_ImplSDL3_UpdateWindow(ImGuiViewport* viewport)
+{
+    ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
+
+    // Update SDL3 parent if it changed _after_ creation.
+    // This is for advanced apps that are manipulating ParentViewportID manually.
+    SDL_Window* new_parent = ImGui_ImplSDL3_GetSDLWindowFromViewportID(viewport->ParentViewportId);
+    if (new_parent != vd->ParentWindow)
+    {
+        vd->ParentWindow = new_parent;
+        SDL_SetWindowParent(vd->Window, vd->ParentWindow);
+    }
+}
+
 static ImVec2 ImGui_ImplSDL3_GetWindowPos(ImGuiViewport* viewport)
 {
     ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData;
@@ -1057,6 +1115,7 @@ static void ImGui_ImplSDL3_InitPlatformInterface(SDL_Window* window, void* sdl_g
     platform_io.Platform_CreateWindow = ImGui_ImplSDL3_CreateWindow;
     platform_io.Platform_DestroyWindow = ImGui_ImplSDL3_DestroyWindow;
     platform_io.Platform_ShowWindow = ImGui_ImplSDL3_ShowWindow;
+    platform_io.Platform_UpdateWindow = ImGui_ImplSDL3_UpdateWindow;
     platform_io.Platform_SetWindowPos = ImGui_ImplSDL3_SetWindowPos;
     platform_io.Platform_GetWindowPos = ImGui_ImplSDL3_GetWindowPos;
     platform_io.Platform_SetWindowSize = ImGui_ImplSDL3_SetWindowSize;
@@ -1079,7 +1138,7 @@ static void ImGui_ImplSDL3_InitPlatformInterface(SDL_Window* window, void* sdl_g
     vd->WindowOwned = false;
     vd->GLContext = (SDL_GLContext)sdl_gl_context;
     main_viewport->PlatformUserData = vd;
-    main_viewport->PlatformHandle = vd->Window;
+    main_viewport->PlatformHandle = (void*)(intptr_t)vd->WindowID;
 }
 
 static void ImGui_ImplSDL3_ShutdownPlatformInterface()

backends/imgui_impl_sdl3.h

@@ -2,7 +2,7 @@
 // This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
 // (Info: SDL3 is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc.)
 
-// (**IMPORTANT: SDL 3.0.0 is NOT YET RELEASED AND CURRENTLY HAS A FAST CHANGING API. THIS CODE BREAKS OFTEN**)
+// (**IMPORTANT: SDL 3.0.0 is NOT YET RELEASED AND CURRENTLY HAS A FAST CHANGING API. THIS CODE BREAKS OFTEN AS SDL3 CHANGES.**)
 
 // Implemented features:
 //  [X] Platform: Clipboard support.
@@ -13,7 +13,6 @@
 //  [x] Platform: Multi-viewport support (multiple windows). Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable' -> the OS animation effect when window gets created/destroyed is problematic. SDL2 backend doesn't have issue.
 // Issues:
 //  [ ] Platform: Multi-viewport: Minimized windows seems to break mouse wheel events (at least under Windows).
-//  [ ] Platform: Multi-viewport: ParentViewportID not honored, and so io.ConfigViewportsNoDefaultParent has no effect (minor).
 //  [x] Platform: Basic IME support. Position somehow broken in SDL3 + app needs to call 'SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");' before SDL_CreateWindow()!.
 
 // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.

backends/imgui_impl_sdlrenderer3.cpp

@@ -1,6 +1,8 @@
 // dear imgui: Renderer Backend for SDL_Renderer for SDL3
 // (Requires: SDL 3.0.0+)
 
+// (**IMPORTANT: SDL 3.0.0 is NOT YET RELEASED AND CURRENTLY HAS A FAST CHANGING API. THIS CODE BREAKS OFTEN AS SDL3 CHANGES.**)
+
 // Note how SDL_Renderer is an _optional_ component of SDL3.
 // For a multi-platform app consider using e.g. SDL+DirectX on Windows and SDL+OpenGL on Linux/OSX.
 // If your application will want to render any non trivial amount of graphics other than UI,

backends/imgui_impl_sdlrenderer3.h

@@ -1,6 +1,8 @@
 // dear imgui: Renderer Backend for SDL_Renderer for SDL3
 // (Requires: SDL 3.0.0+)
 
+// (**IMPORTANT: SDL 3.0.0 is NOT YET RELEASED AND CURRENTLY HAS A FAST CHANGING API. THIS CODE BREAKS OFTEN AS SDL3 CHANGES.**)
+
 // Note how SDL_Renderer is an _optional_ component of SDL3.
 // For a multi-platform app consider using e.g. SDL+DirectX on Windows and SDL+OpenGL on Linux/OSX.
 // If your application will want to render any non trivial amount of graphics other than UI,

backends/imgui_impl_wgpu.cpp

@@ -18,6 +18,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2024-09-16: Added support for optional IMGUI_IMPL_WEBGPU_BACKEND_DAWN / IMGUI_IMPL_WEBGPU_BACKEND_WGPU define to handle ever-changing native implementations. (#7977)
 //  2024-01-22: Added configurable PipelineMultisampleState struct. (#7240)
 //  2024-01-22: (Breaking) ImGui_ImplWGPU_Init() now takes a ImGui_ImplWGPU_InitInfo structure instead of variety of parameters, allowing for easier further changes.
 //  2024-01-22: Fixed pipeline layout leak. (#7245)
@@ -37,6 +38,18 @@
 //  2021-02-18: Change blending equation to preserve alpha in output buffer.
 //  2021-01-28: Initial version.
 
+// When targeting native platforms (i.e. NOT emscripten), one of IMGUI_IMPL_WEBGPU_BACKEND_DAWN
+// or IMGUI_IMPL_WEBGPU_BACKEND_WGPU must be provided. See imgui_impl_wgpu.h for more details.
+#ifndef __EMSCRIPTEN__
+    #if defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN) == defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
+    #error exactly one of IMGUI_IMPL_WEBGPU_BACKEND_DAWN or IMGUI_IMPL_WEBGPU_BACKEND_WGPU must be defined!
+    #endif
+#else
+    #if defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN) || defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
+    #error neither IMGUI_IMPL_WEBGPU_BACKEND_DAWN nor IMGUI_IMPL_WEBGPU_BACKEND_WGPU may be defined if targeting emscripten!
+    #endif
+#endif
+
 #include "imgui.h"
 #ifndef IMGUI_DISABLE
 #include "imgui_impl_wgpu.h"
@@ -247,7 +260,11 @@ static WGPUProgrammableStageDescriptor ImGui_ImplWGPU_CreateShaderModule(const c
     ImGui_ImplWGPU_Data* bd = ImGui_ImplWGPU_GetBackendData();
 
     WGPUShaderModuleWGSLDescriptor wgsl_desc = {};
+#ifdef IMGUI_IMPL_WEBGPU_BACKEND_DAWN
+    wgsl_desc.chain.sType = WGPUSType_ShaderSourceWGSL;
+#else
     wgsl_desc.chain.sType = WGPUSType_ShaderModuleWGSLDescriptor;
+#endif
     wgsl_desc.code = wgsl_source;
 
     WGPUShaderModuleDescriptor desc = {};
@@ -662,7 +679,11 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
     // Create depth-stencil State
     WGPUDepthStencilState depth_stencil_state = {};
     depth_stencil_state.format = bd->depthStencilFormat;
+#ifdef IMGUI_IMPL_WEBGPU_BACKEND_DAWN
+    depth_stencil_state.depthWriteEnabled = WGPUOptionalBool_False;
+#else
     depth_stencil_state.depthWriteEnabled = false;
+#endif
     depth_stencil_state.depthCompare = WGPUCompareFunction_Always;
     depth_stencil_state.stencilFront.compare = WGPUCompareFunction_Always;
     depth_stencil_state.stencilFront.failOp = WGPUStencilOperation_Keep;
@@ -732,7 +753,15 @@ bool ImGui_ImplWGPU_Init(ImGui_ImplWGPU_InitInfo* init_info)
     // Setup backend capabilities flags
     ImGui_ImplWGPU_Data* bd = IM_NEW(ImGui_ImplWGPU_Data)();
     io.BackendRendererUserData = (void*)bd;
+#if defined(__EMSCRIPTEN__)
+    io.BackendRendererName = "imgui_impl_webgpu_emscripten";
+#elif defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN)
+    io.BackendRendererName = "imgui_impl_webgpu_dawn";
+#elif defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
+    io.BackendRendererName = "imgui_impl_webgpu_wgpu";
+#else
     io.BackendRendererName = "imgui_impl_webgpu";
+#endif
     io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
 
     bd->initInfo = *init_info;

backends/imgui_impl_wgpu.h

@@ -2,6 +2,13 @@
 // This needs to be used along with a Platform Binding (e.g. GLFW)
 // (Please note that WebGPU is currently experimental, will not run on non-beta browsers, and may break.)
 
+// Important note to dawn and/or wgpu users: when targeting native platforms (i.e. NOT emscripten),
+// one of IMGUI_IMPL_WEBGPU_BACKEND_DAWN or IMGUI_IMPL_WEBGPU_BACKEND_WGPU must be provided.
+// Add #define to your imconfig.h file, or as a compilation flag in your build system.
+// This requirement will be removed once WebGPU stabilizes and backends converge on a unified interface.
+//#define IMGUI_IMPL_WEBGPU_BACKEND_DAWN
+//#define IMGUI_IMPL_WEBGPU_BACKEND_WGPU
+
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'WGPUTextureView' as ImTextureID. Read the FAQ about ImTextureID!
 //  [X] Renderer: Large meshes support (64k+ vertices) with 16-bit indices.

backends/imgui_impl_win32.cpp

@@ -23,6 +23,7 @@
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
 //  2024-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface.
+//  2024-09-16: [Docking] Inputs: fixed an issue where a viewport destroyed while clicking would hog mouse tracking and temporary lead to incorrect update of HoveredWindow. (#7971)
 //  2024-07-08: Inputs: Fixed ImGuiMod_Super being mapped to VK_APPS instead of VK_LWIN||VK_RWIN. (#7768)
 //  2023-10-05: Inputs: Added support for extra ImGuiKey values: F13 to F24 function keys, app back/forward keys.
 //  2023-09-25: Inputs: Synthesize key-down event on key-up for VK_SNAPSHOT / ImGuiKey_PrintScreen as Windows doesn't emit it (same behavior as GLFW/SDL).
@@ -114,7 +115,7 @@ struct ImGui_ImplWin32_Data
 {
     HWND                        hWnd;
     HWND                        MouseHwnd;
-    int                         MouseTrackedArea;   // 0: not tracked, 1: client are, 2: non-client area
+    int                         MouseTrackedArea;   // 0: not tracked, 1: client area, 2: non-client area
     int                         MouseButtonsDown;
     INT64                       Time;
     INT64                       TicksPerSecond;
@@ -175,12 +176,14 @@ static bool ImGui_ImplWin32_InitEx(void* hwnd, bool platform_has_own_dc)
     io.BackendFlags |= ImGuiBackendFlags_HasMouseHoveredViewport; // We can call io.AddMouseViewportEvent() with correct data (optional)
 
     bd->hWnd = (HWND)hwnd;
-    bd->WantUpdateMonitors = true;
     bd->TicksPerSecond = perf_frequency;
     bd->Time = perf_counter;
     bd->LastMouseCursor = ImGuiMouseCursor_COUNT;
     ImGui_ImplWin32_UpdateKeyboardCodePage();
 
+    // Update monitor a first time during init
+    ImGui_ImplWin32_UpdateMonitors();
+
     // Our mouse update function expect PlatformHandle to be filled for the main viewport
     ImGuiViewport* main_viewport = ImGui::GetMainViewport();
     main_viewport->PlatformHandle = main_viewport->PlatformHandleRaw = (void*)bd->hWnd;
@@ -437,6 +440,8 @@ static BOOL CALLBACK ImGui_ImplWin32_UpdateMonitors_EnumFunc(HMONITOR monitor, H
     imgui_monitor.WorkSize = ImVec2((float)(info.rcWork.right - info.rcWork.left), (float)(info.rcWork.bottom - info.rcWork.top));
     imgui_monitor.DpiScale = ImGui_ImplWin32_GetDpiScaleForMonitor(monitor);
     imgui_monitor.PlatformHandle = (void*)monitor;
+    if (imgui_monitor.DpiScale <= 0.0f)
+        return TRUE; // Some accessibility applications are declaring virtual monitors with a DPI of 0, see #7902.
     ImGuiPlatformIO& io = ImGui::GetPlatformIO();
     if (info.dwFlags & MONITORINFOF_PRIMARY)
         io.Monitors.push_front(imgui_monitor);
@@ -490,12 +495,14 @@ void    ImGui_ImplWin32_NewFrame()
     ImGui_ImplWin32_UpdateGamepads();
 }
 
-// There is no distinct VK_xxx for keypad enter, instead it is VK_RETURN + KF_EXTENDED, we assign it an arbitrary value to make code more readable (VK_ codes go up to 255)
-#define IM_VK_KEYPAD_ENTER      (VK_RETURN + 256)
-
 // Map VK_xxx to ImGuiKey_xxx.
-static ImGuiKey ImGui_ImplWin32_VirtualKeyToImGuiKey(WPARAM wParam)
+// Not static to allow third-party code to use that if they want to (but undocumented)
+ImGuiKey ImGui_ImplWin32_KeyEventToImGuiKey(WPARAM wParam, LPARAM lParam)
 {
+    // There is no distinct VK_xxx for keypad enter, instead it is VK_RETURN + KF_EXTENDED.
+    if ((wParam == VK_RETURN) && (HIWORD(lParam) & KF_EXTENDED))
+        return ImGuiKey_KeypadEnter;
+
     switch (wParam)
     {
         case VK_TAB: return ImGuiKey_Tab;
@@ -544,7 +551,6 @@ static ImGuiKey ImGui_ImplWin32_VirtualKeyToImGuiKey(WPARAM wParam)
         case VK_MULTIPLY: return ImGuiKey_KeypadMultiply;
         case VK_SUBTRACT: return ImGuiKey_KeypadSubtract;
         case VK_ADD: return ImGuiKey_KeypadAdd;
-        case IM_VK_KEYPAD_ENTER: return ImGuiKey_KeypadEnter;
         case VK_LSHIFT: return ImGuiKey_LeftShift;
         case VK_LCONTROL: return ImGuiKey_LeftCtrl;
         case VK_LMENU: return ImGuiKey_LeftAlt;
@@ -703,6 +709,16 @@ IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARA
         }
         return 0;
     }
+    case WM_DESTROY:
+        if (bd->MouseHwnd == hwnd && bd->MouseTrackedArea != 0)
+        {
+            TRACKMOUSEEVENT tme_cancel = { sizeof(tme_cancel), TME_CANCEL, hwnd, 0 };
+            ::TrackMouseEvent(&tme_cancel);
+            bd->MouseHwnd = nullptr;
+            bd->MouseTrackedArea = 0;
+            io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
+        }
+        return 0;
     case WM_LBUTTONDOWN: case WM_LBUTTONDBLCLK:
     case WM_RBUTTONDOWN: case WM_RBUTTONDBLCLK:
     case WM_MBUTTONDOWN: case WM_MBUTTONDBLCLK:
@@ -756,12 +772,9 @@ IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARA
             // Submit modifiers
             ImGui_ImplWin32_UpdateKeyModifiers();
 
-            // Obtain virtual key code
-            // (keypad enter doesn't have its own... VK_RETURN with KF_EXTENDED flag means keypad enter, see IM_VK_KEYPAD_ENTER definition for details, it is mapped to ImGuiKey_KeyPadEnter.)
-            int vk = (int)wParam;
-            if ((wParam == VK_RETURN) && (HIWORD(lParam) & KF_EXTENDED))
-                vk = IM_VK_KEYPAD_ENTER;
-            const ImGuiKey key = ImGui_ImplWin32_VirtualKeyToImGuiKey(vk);
+            // Obtain virtual key code and convert to ImGuiKey
+            const ImGuiKey key = ImGui_ImplWin32_KeyEventToImGuiKey(wParam, lParam);
+            const int vk = (int)wParam;
             const int scancode = (int)LOBYTE(HIWORD(lParam));
 
             // Special behavior for VK_SNAPSHOT / ImGuiKey_PrintScreen as Windows doesn't emit the key down event.
@@ -1156,11 +1169,20 @@ static ImVec2 ImGui_ImplWin32_GetWindowPos(ImGuiViewport* viewport)
     return ImVec2((float)pos.x, (float)pos.y);
 }
 
+static void ImGui_ImplWin32_UpdateWin32StyleFromWindow(ImGuiViewport* viewport)
+{
+    ImGui_ImplWin32_ViewportData* vd = (ImGui_ImplWin32_ViewportData*)viewport->PlatformUserData;
+    vd->DwStyle = ::GetWindowLongW(vd->Hwnd, GWL_STYLE);
+    vd->DwExStyle = ::GetWindowLongW(vd->Hwnd, GWL_EXSTYLE);
+}
+
 static void ImGui_ImplWin32_SetWindowPos(ImGuiViewport* viewport, ImVec2 pos)
 {
     ImGui_ImplWin32_ViewportData* vd = (ImGui_ImplWin32_ViewportData*)viewport->PlatformUserData;
     IM_ASSERT(vd->Hwnd != 0);
     RECT rect = { (LONG)pos.x, (LONG)pos.y, (LONG)pos.x, (LONG)pos.y };
+    if (viewport->Flags & ImGuiViewportFlags_OwnedByApp)
+        ImGui_ImplWin32_UpdateWin32StyleFromWindow(viewport); // Not our window, poll style before using
     ::AdjustWindowRectEx(&rect, vd->DwStyle, FALSE, vd->DwExStyle);
     ::SetWindowPos(vd->Hwnd, nullptr, rect.left, rect.top, 0, 0, SWP_NOZORDER | SWP_NOSIZE | SWP_NOACTIVATE);
 }
@@ -1179,6 +1201,8 @@ static void ImGui_ImplWin32_SetWindowSize(ImGuiViewport* viewport, ImVec2 size)
     ImGui_ImplWin32_ViewportData* vd = (ImGui_ImplWin32_ViewportData*)viewport->PlatformUserData;
     IM_ASSERT(vd->Hwnd != 0);
     RECT rect = { 0, 0, (LONG)size.x, (LONG)size.y };
+    if (viewport->Flags & ImGuiViewportFlags_OwnedByApp)
+        ImGui_ImplWin32_UpdateWin32StyleFromWindow(viewport); // Not our window, poll style before using
     ::AdjustWindowRectEx(&rect, vd->DwStyle, FALSE, vd->DwExStyle); // Client to Screen
     ::SetWindowPos(vd->Hwnd, nullptr, 0, 0, rect.right - rect.left, rect.bottom - rect.top, SWP_NOZORDER | SWP_NOMOVE | SWP_NOACTIVATE);
 }
@@ -1225,14 +1249,14 @@ static void ImGui_ImplWin32_SetWindowAlpha(ImGuiViewport* viewport, float alpha)
     IM_ASSERT(alpha >= 0.0f && alpha <= 1.0f);
     if (alpha < 1.0f)
     {
-        DWORD style = ::GetWindowLongW(vd->Hwnd, GWL_EXSTYLE) | WS_EX_LAYERED;
-        ::SetWindowLongW(vd->Hwnd, GWL_EXSTYLE, style);
+        DWORD ex_style = ::GetWindowLongW(vd->Hwnd, GWL_EXSTYLE) | WS_EX_LAYERED;
+        ::SetWindowLongW(vd->Hwnd, GWL_EXSTYLE, ex_style);
         ::SetLayeredWindowAttributes(vd->Hwnd, 0, (BYTE)(255 * alpha), LWA_ALPHA);
     }
     else
     {
-        DWORD style = ::GetWindowLongW(vd->Hwnd, GWL_EXSTYLE) & ~WS_EX_LAYERED;
-        ::SetWindowLongW(vd->Hwnd, GWL_EXSTYLE, style);
+        DWORD ex_style = ::GetWindowLongW(vd->Hwnd, GWL_EXSTYLE) & ~WS_EX_LAYERED;
+        ::SetWindowLongW(vd->Hwnd, GWL_EXSTYLE, ex_style);
     }
 }
 

docs/BACKENDS.md

@@ -135,7 +135,7 @@ Generally:
 It is unlikely you will add value to your project by creating your own backend.
 
 Also:
-The [multi-viewports feature](https://github.com/ocornut/imgui/issues/1542) of the 'docking' branch allows
+The [multi-viewports feature](https://github.com/ocornut/imgui/wiki/Multi-Viewports) of the 'docking' branch allows
 Dear ImGui windows to be seamlessly detached from the main application window. This is achieved using an
 extra layer to the Platform and Renderer backends, which allows Dear ImGui to communicate platform-specific
 requests such as: "create an additional OS window", "create a render context", "get the OS position of this

docs/CHANGELOG.txt

@@ -35,6 +35,163 @@ HOW TO UPDATE?
   and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
 - Please report any issue!
 
+-----------------------------------------------------------------------
+ VERSION 1.91.2 (Released 2024-09-19)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.91.2
+
+Other changes:
+
+- Added io.ConfigDebugHighlightIdConflicts debug feature! (#7961, #7669)
+  THIS DETECTS THE MOST COMMON USER ERROR BY FIRST-TIME DEAR IMGUI PROGRAMMERS!
+  - The tool detects when multiple items are sharing the same identifier, due to not
+    using PushID/PopID in loops, or not using ID stack facilities such as "##" suffixes.
+    Very frequently it happens when using empty "" labels.
+  - When hovering an item with a conflicting ID, all visible items with the same ID will
+    be highlighted and an explanatory tooltip is made visible.
+  - The feature may be disabled and is exposed in Demo->Tools menu.
+  - I've been wanting to add this tool for a long time, but was stalled by finding a way to
+    not make it spammy + make it practically zero cost. After @pthom made various proposals to
+    solve the same problem (thanks for pushing me!), I decided it was time to finish it.
+  - Added ImGuiItemFlags_AllowDuplicateId to use with PushItemFlag()/PopItemFlag() if for some
+    reason you intend to have duplicate identifiers.
+  - (#74, #96, #480, #501, #647, #654, #719, #843, #894, #1057, #1173, #1390, #1414, #1556, #1768,
+     #2041, #2116, #2330, #2475, #2562, #2667, #2807, #2885, #3102, #3375, #3526, #3964, #4008,
+     #4070, #4158, #4172, #4199, #4375, #4395, #4471, #4548, #4612, #4631, #4657, #4796, #5210,
+     #5303, #5360, #5393, #5533, #5692, #5707, #5729, #5773, #5787, #5884, #6046, #6093, #6186,
+     #6223, #6364, #6387, #6567, #6692, #6724, #6939, #6984, #7246, #7270, #7375, #7421, #7434,
+     #7472, #7581, #7724, #7926, #7937 and probably more..)
+- Nav: pressing any keyboard key while holding Alt disable toggling nav layer on Alt release. (#4439)
+- MultiSelect+Tables: fixed an issue where box-select would skip items while drag-scrolling
+  in a table with outer borders. (#7970, #7821).
+- Inputs: SetNextItemShortcut() with ImGuiInputFlags_Tooltip doesn't show tooltip when item is active.
+- InputText: internal refactoring to simplify and optimize the code. The ImWchar buffer has been
+  removed. Simplifications allowed to implement new optimizations for handling very large text buffers
+  (e.g. in our testing, handling of a 1 MB text buffer is now 3 times faster in VS2022 Debug build).
+  This is the first step toward more refactoring. (#7925) [@alektron, @ocornut]
+- InputText: added CJK double-width punctuation to list of separators considered for CTRL+Arrow.
+- Tables: fixed auto-width columns when using synced-instances of same table. The previous fix
+  done in v1.90.5 was incomplete. (#7218)
+- Tables: fixed assertion related to inconsistent outer clipping when sizes are not rounded. (#7957) [@eclbtownsend]
+- Tables: fixed assertion with tables with borders when clipped by parent. (#6765, #3752, #7428)
+- Windows: fixed an issue where double-click to collapse could be triggered even while another
+  item is active, if the item didn't use the left mouse button. (#7841)
+- Misc: Made it accepted to call SetMouseCursor() with any out-of-bound value, as a way to allow
+  hacking in custom cursors if desirable.
+- Fonts: fixed ellipsis "..." rendering width miscalculation bug introduced in 1.91.0. (#7976) [@DDeimos]
+- TextLinkOpenURL(): modified tooltip to display a verb "Open 'xxxx'". (#7885, #7660)
+- Backends: SDL2: use SDL_Vulkan_GetDrawableSize() when available. (#7967, #3190) [@scribam]
+- Backends: GLFW+Emscripten: use OSX behaviors automatically when using contrib glfw port. (#7965, #7915)
+  [@ypujante]
+- Backends: WebGPU: Added support for optional IMGUI_IMPL_WEBGPU_BACKEND_DAWN / IMGUI_IMPL_WEBGPU_BACKEND_WGPU
+  defines to handle ever-changing native implementations. (#7977, #7969, #6602, #6188, #7523) [@acgaudette]
+
+Docking+Viewports Branch:
+
+- Viewports: fixed an issue where a window manually constrained to the main viewport while crossing
+  over main viewport bounds isn't translated properly. (#7985)
+- Backends: SDL2, SDL3, Win32: ensure that ImGuiPlatformMonitor list is available after backend Init call. (#7995)
+- Backends: Win32: fixed direct calls to platform_io.Platform_SetWindowPos()/Platform_SetWindowSize()
+  on windows created by application (typically main viewport).
+- Backends: Win32: fixed an issue where a viewport destroyed while clicking would hog
+  mouse tracking and temporary lead to incorrect update of HoveredWindow. (#7971)
+- Backends: SDL3: added support for viewport->ParentViewportId field to support parenting
+  windows at OS level. (#7973, #7989) [@RT2code]
+
+-----------------------------------------------------------------------
+ VERSION 1.91.1 (Released 2024-09-04)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.91.1
+
+Breaking changes:
+
+- BeginChild(): renamed ImGuiChildFlags_Border to ImGuiChildFlags_Borders for consistency. [@cfillion]
+  Kept inline redirection flag (will obsolete).
+- IO: moved clipboard functions from ImGuiIO to ImGuiPlatformIO:
+    - io.GetClipboardTextFn         -> platform_io.Platform_GetClipboardTextFn
+    - io.SetClipboardTextFn         -> platform_io.Platform_SetClipboardTextFn
+    - in function signatures, changed 'void* user_data' to 'ImGuiContext* ctx' for consistency
+      with other functions. Pull your user data from platform_io.ClipboardUserData if used.
+    - as this is will affect all users of custom engines/backends, we are providing proper
+      legacy redirection (will obsolete).
+- IO: moved other functions from ImGuiIO to ImGuiPlatformIO:
+    - io.PlatformOpenInShellFn      -> platform_io.Platform_OpenInShellFn (#7660)
+    - io.PlatformSetImeDataFn       -> platform_io.Platform_SetImeDataFn
+    - io.PlatformLocaleDecimalPoint -> platform_io.Platform_LocaleDecimalPoint (#7389, #6719, #2278)
+    - access those via GetPlatformIO() instead of GetIO().
+  (Because PlatformOpenInShellFn and PlatformSetImeDataFn were introduced very recently and
+  often automatically set by core library and backends, we are exceptionally not maintaining
+  a legacy redirection symbol for those two.)
+- Commented the old ImageButton() signature obsoleted in 1.89 (~August 2022). (#5533, #4471, #2464, #1390)
+   - old ImageButton() used ImTextureId as item id (created issue with e.g. multiple buttons in same scope, transient texture id values, opaque computation of ID)
+   - new ImageButton() requires an explicit 'const char* str_id'
+   - old ImageButton() had frame_padding' override argument.
+   - new ImageButton() always use style.FramePadding, which you can modify using PushStyleVar()/PopStyleVar().
+
+Other changes:
+
+- IO: Added GetPlatformIO() and ImGuiPlatformIO, pulled from 'docking' branch, which
+  is a centralized spot to connect os/platform/renderer related functions.
+  Clipboard, IME and OpenInShell hooks are moved here. (#7660)
+- IO, InputText: fixed an issue where typing text in an InputText() would defer character
+  processing by one frame, because of the trickling input queue. Reworked interleaved
+  keys<>char trickling to take account for keys known to input characters. (#7889, #4921, #4858)
+- Windows: adjust default ClipRect to better match rendering of thick borders (which are in
+  theory not supported). Compensate for the fact that borders are centered around the windows
+  edge rather than inner. (#7887, #7888 + #3312, #7540, #3756, #6170, #6365)
+- Made BeginItemTooltip() and IsItemHovered() with delay flag infer an implicit ID (for
+  ID-less items such as Text element) in a way that works when item resizes. (#7945, #1485)
+- MultiSelect+TreeNode+Drag and Drop: fixed an issue where carrying a drag and drop payload
+  over an already open tree node using multi-select would incorrectly select it. (#7850)
+- MultiSelect+TreeNode: default open behavior is _OpenOnDoubleClick + _OpenOnArrow when
+  used in a multi-select context without any ImGuiTreeNode_OpenOnXXX flags set. (#7850)
+- Tables: fixes/revert a 1.90 change were outer border would be moved bottom and right
+  by an extra pixel + rework the change so that contents doesn't overlap the bottom and
+  right border in a scrolling table. (#6765, #3752, #7428)
+- Tables: fixed an issue resizing columns or querying hovered column/row when using multiple
+  synched instances that are layed out at different X positions. (#7933)
+- Tabs: avoid queuing a refocus when tab is already focused, which would have the
+  side-effect of e.g. closing popup on a mouse release. (#7914)
+- InputText: allow callback to update buffer while in read-only mode. (imgui_club/#46)
+- InputText: fixed an issue programmatically refocusing a multi-line input which was just active. (#4761, #7870)
+- TextLink(), TextLinkOpenURL(): change mouse cursor to Hand shape when hovered. (#7885, #7660)
+- Tooltips, Drag and Drop: made it possible to override BeginTooltip() position while inside
+  a drag and drop source or target: a SetNextWindowPos() call won't be overridden. (#6973)
+- PlotHistogram, PlotLines: register item ID and use button behavior in a more idiomatic manner,
+  fixes preventing e.g. GetItemID() and other ID-based helper to work. (#7935, #3072)
+- Style: added PushStyleVarX(), PushStyleVarY() helpers to conveniently modify only
+  one component of a ImVec2 var.
+- Fonts: made it possible to use PushFont()/PopFont() calls across Begin() calls. (#3224, #3875, #6398, #7903)
+- Backends:
+  - Backends: GLFW: added ImGui_ImplGlfw_Sleep() helper function because GLFW does not
+    provide a way to do a portable sleep. (#7844)
+  - Backends: GLFW+Emscripten: Use OpenURL() from GLFW3 contrib port when available and using
+    the contrib port instead of Emscripten own GLFW3 implementation. (#7647, #7915, #7660) [@ypujante]
+  - Backends: SDL2, SDL3: ignore events of other SDL windows. (#7853) [@madebr, @ocornut]
+  - Backends: SDL2, SDL3: storing SDL_WindowID inside ImGuiViewport::PlatformHandle instead of SDL_Window*.
+  - Backends: SDL3: Update for API changes: SDL_GetGamepads() memory ownership logic was reverted back
+    by SDL3 on July 27. (#7918, #7898, #7807) [@cheyao, @MattGuerrette]
+  - Backends: GLFW: passing null window to glfwGetClipboardString()/glfwSetClipboardString()
+    since GLFW own tests are doing that and it seems unnecessary.
+  - Backends: SDL2, SDL3, GLFW, OSX, Allegro: update to set function handlers in ImGuiPlatformIO
+    instead of ImGuiIO.
+- Examples:
+  - Examples: GLFW (all), SDL2 (all), SDL3 (all), Win32+OpenGL3: rework examples main loop
+    to handle minimization without burning CPU or GPU by running unthrottled code. (#7844)
+  - Examples: SDL3: Update for API changes: SDL_Init() returns 0 on failure.
+
+Docking+Viewports Branch:
+
+- Viewports: added optional platform_io.Platform_GetWindowWorkAreaInsets() hook
+  to allow backends to alter the default per-viewport work-area. (#7823)
+- Backends: don't report monitors with DpiScale of 0, which seemed to be reported for
+  virtual monitors instead by accessibility drivers. (#7902) [@nicolasnoble, @ocornut]
+- Backends: SDL2, SDL3: using SDL_HINT_WINDOW_NO_ACTIVATION_WHEN_SHOWN to support the
+  ImGuiViewportFlags_NoFocusOnAppearing flag, instead of using a Win32-specific hack.
+  (#7896) [@RT2Code]
+
 -----------------------------------------------------------------------
  VERSION 1.91.0 (Released 2024-07-30)
 -----------------------------------------------------------------------
@@ -77,6 +234,7 @@ Other changes:
 
 - Added TextLink(), TextLinkOpenURL() hyperlink widgets. (#7660)
 - IO: added io.PlatformOpenInShellFn handler to open a link/folder/file in OS shell. (#7660)
+  (*EDIT* From next version 1.91.1 we moved this to platform_io.Platform_OpenInShellFn *EDIT**)
   Added IMGUI_DISABLE_DEFAULT_SHELL_FUNCTIONS to disable default Windows/Linux/Mac implementations.
 - IO: added io.ConfigNavSwapGamepadButtons to swap Activate/Cancel (A<>B) buttons, to match the
   typical "Nintendo/Japanese consoles" button layout when using Gamepad navigation. (#787, #5723)
@@ -186,7 +344,7 @@ Other changes:
   - Backends: SDL2,SDL3,OSX: Update for io.SetPlatformImeDataFn() -> io.PlatformSetImeDataFn() rename.
   - Backends: GLFW,SDL2: Added io.PlatformOpenInShellFn handler for web/Emscripten versions. (#7660)
     [@ypujante, @ocornut]
-  - Backends; GLFW+Emscripten: Added support for GLFW3 contrib port which fixes many of the things
+  - Backends: GLFW+Emscripten: Added support for GLFW3 contrib port which fixes many of the things
     not supported by the embedded GLFW: gamepad support, mouse cursor shapes, copy to clipboard,
     workaround for Super/Meta key, different ways of resizing, multi-window (glfw/canvas) support.
     (#7647) [@ypujante]
@@ -858,6 +1016,7 @@ Breaking changes:
       Before:  BeginChild("Name", size, false)
       After:   BeginChild("Name", size) or BeginChild("Name", 0) or BeginChild("Name", size, ImGuiChildFlags_None)
    Existing code will still work as 'ImGuiChildFlags_Border == true', but you are encouraged to update call sites.
+   **AMEND FROM THE FUTURE: from 1.91.1, 'ImGuiChildFlags_Border' is called 'ImGuiChildFlags_Borders'**
  - BeginChild(): Added child-flag ImGuiChildFlags_AlwaysUseWindowPadding as a replacement for
    the window-flag ImGuiWindowFlags_AlwaysUseWindowPadding: the feature only ever made sense
    for use with BeginChild() anyhow, passing it to Begin() had no effect. Now that we accept
@@ -907,6 +1066,7 @@ Other changes:
     child windows from the bottom/right border (toward layout direction). Resized child windows
     settings are saved and persistent in .ini file. (#1710)
   - BeginChild(): Added ImGuiChildFlags_Border as a replacement for 'bool border = true' parameter.
+    **AMEND FROM THE FUTURE: from 1.91.1, 'ImGuiChildFlags_Border' is called 'ImGuiChildFlags_Borders'**
   - BeginChild(): Added ImGuiChildFlags_AutoResizeX and ImGuiChildFlags_AutoResizeY to auto-resize
     on one axis, while generally providing a size on the other axis. (#1666, #1395, #1496, #1710)
     e.g. BeginChild("name", {-FLT_MIN, 0.0f}, ImGuiChildFlags_AutoResizeY);

docs/FAQ.md

@@ -77,9 +77,9 @@ or view this file with any Markdown viewer.
 ### Q: Which version should I get?
 I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported.
 
-You may use the [docking](https://github.com/ocornut/imgui/tree/docking) branch which includes:
-- [Docking features](https://github.com/ocornut/imgui/issues/2109)
-- [Multi-viewport features](https://github.com/ocornut/imgui/issues/1542)
+You may use the ['docking'](https://github.com/ocornut/imgui/tree/docking) branch which includes:
+- [Docking features](https://github.com/ocornut/imgui/wiki/Docking)
+- [Multi-viewport features](https://github.com/ocornut/imgui/wiki/Multi-Viewports)
 
 Many projects are using this branch and it is kept in sync with master regularly.
 
@@ -204,10 +204,11 @@ ctx->RSSetScissorRects(1, &r);
 ### Q: How can I have multiple widgets with the same label?
 ### Q: How can I have multiple windows with the same label?
 
-**USING THE SAME LABEL+ID IS THE MOST COMMON USER MISTAKE:**
+**USING THE SAME LABEL+ID IS THE MOST COMMON USER MISTAKE!**
+<br>**USING AN EMPTY LABEL IS THE SAME AS USING THE SAME LABEL AS YOUR PARENT WIDGET!**
 <table>
 <tr>
-<td><img src="https://github.com/ocornut/imgui/assets/8225057/76eb9467-74d1-4e95-9f56-be81c6dd029d"></td>
+<td><img src="https://github.com/user-attachments/assets/776a8315-1164-4178-9a8c-df52e0ff28aa"></td>
 <td>
 <pre lang="cpp">
 ImGui::Begin("Incorrect!");
@@ -639,7 +640,7 @@ The applications in examples/ are doing that.
 Windows: you can use the WM_CHAR or WM_UNICHAR or WM_IME_CHAR message (depending if your app is built using Unicode or MultiByte mode).
 You may also use `MultiByteToWideChar()` or `ToUnicode()` to retrieve Unicode codepoints from MultiByte characters or keyboard state.
 Windows: if your language is relying on an Input Method Editor (IME), you can write your HWND to ImGui::GetMainViewport()->PlatformHandleRaw
-for the default implementation of io.PlatformSetImeDataFn() to set your Microsoft IME position correctly.
+for the default implementation of GetPlatformIO().Platform_SetImeDataFn() to set your Microsoft IME position correctly.
 
 ##### [Return to Index](#index)
 
@@ -654,7 +655,7 @@ You may take a look at:
 - [Quotes](https://github.com/ocornut/imgui/wiki/Quotes)
 - [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui)
 - [Funding & Sponsors](https://github.com/ocornut/imgui/wiki/Funding)
-- [Gallery](https://github.com/ocornut/imgui/issues/7503)
+- [Gallery](https://github.com/ocornut/imgui/issues?q=label%3Agallery)
 
 ##### [Return to Index](#index)
 
@@ -700,7 +701,7 @@ There is an auto-generated [c-api for Dear ImGui (cimgui)](https://github.com/ci
 - Individuals: you can support continued maintenance and development via PayPal donations. See [README](https://github.com/ocornut/imgui/blob/master/docs/README.md).
 - If you are experienced with Dear ImGui and C++, look at [GitHub Issues](https://github.com/ocornut/imgui/issues), [GitHub Discussions](https://github.com/ocornut/imgui/discussions), the [Wiki](https://github.com/ocornut/imgui/wiki), read [docs/TODO.txt](https://github.com/ocornut/imgui/blob/master/docs/TODO.txt), and see how you want to help and can help!
 - Disclose your usage of Dear ImGui via a dev blog post, a tweet, a screenshot, a mention somewhere, etc.
-You may post screenshots or links in the [gallery threads](https://github.com/ocornut/imgui/issues/7503). Visuals are ideal as they inspire other programmers. Disclosing your use of Dear ImGui helps the library grow credibility, and helps other teams and programmers with taking decisions.
+You may post screenshots or links in the [gallery threads](https://github.com/ocornut/imgui/issues?q=label%3Agallery). Visuals are ideal as they inspire other programmers. Disclosing your use of Dear ImGui helps the library grow credibility, and helps other teams and programmers with taking decisions.
 - If you have issues or if you need to hack into the library, even if you don't expect any support it is useful that you share your issues or sometimes incomplete PR.
 
 ##### [Return to Index](#index)

docs/FONTS.md

@@ -50,7 +50,9 @@ All loaded fonts glyphs are rendered into a single texture atlas ahead of time.
 
 ### (4) Font atlas texture fails to upload to GPU.
 
-This is often of byproduct of point 3. If you have large number of glyphs or multiple fonts, the texture may become too big for your graphics API. **The typical result of failing to upload a texture is if every glyph or everything appears as empty black or white rectangle.** Mind the fact that some graphics drivers have texture size limitation. If you are building a PC application, mind the fact that your users may use hardware with lower limitations than yours.
+This is often of byproduct of point 3. If you have large number of glyphs or multiple fonts, the texture may become too big for your graphics API. **The typical result of failing to upload a texture is if every glyph or everything appears as empty white rectangles.** Mind the fact that some graphics drivers have texture size limitation. If you are building a PC application, mind the fact that your users may use hardware with lower limitations than yours.
+
+![empty squares](https://github.com/user-attachments/assets/68b50fb5-8b9d-4c38-baec-6ac384f06d26)
 
 Some solutions:
 - You may reduce oversampling, e.g. `font_config.OversampleH = 1`, this will half your texture size for a quality loss.
@@ -60,6 +62,8 @@ Some solutions:
 - Set `io.Fonts.Flags |= ImFontAtlasFlags_NoPowerOfTwoHeight;` to disable rounding the texture height to the next power of two.
 - Set `io.Fonts.TexDesiredWidth` to specify a texture width to reduce maximum texture height (see comment in `ImFontAtlas::Build()` function).
 
+Future versions of Dear ImGui should solve this problem.
+
 ##### [Return to Index](#index)
 
 ---------------------------------------

docs/README.md

@@ -22,7 +22,7 @@ Businesses: support continued development and maintenance via invoiced sponsorin
 
 Dear ImGui is a **bloat-free graphical user interface library for C++**. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline-enabled application. It is fast, portable, renderer agnostic, and self-contained (no external dependencies).
 
-Dear ImGui is designed to **enable fast iterations** and to **empower programmers** to create **content creation tools and visualization / debug tools** (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal and lacks certain features commonly found in more high-level libraries.
+Dear ImGui is designed to **enable fast iterations** and to **empower programmers** to create **content creation tools and visualization / debug tools** (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal and lacks certain features commonly found in more high-level libraries. Among other things, full internationalization (right-to-left text, bidirectional text, text shaping etc.) and accessibility features are not supported.
 
 Dear ImGui is particularly suited to integration in game engines (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on console platforms where operating system features are non-standard.
 
@@ -141,7 +141,7 @@ Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
 
 Examples projects using Dear ImGui: [Tracy](https://github.com/wolfpld/tracy) (profiler), [ImHex](https://github.com/WerWolv/ImHex) (hex editor/data analysis), [RemedyBG](https://remedybg.itch.io/remedybg) (debugger) and [hundreds of others](https://github.com/ocornut/imgui/wiki/Software-using-Dear-ImGui).
 
-For more user-submitted screenshots of projects using Dear ImGui, check out the [Gallery Threads](https://github.com/ocornut/imgui/issues/7503)!
+For more user-submitted screenshots of projects using Dear ImGui, check out the [Gallery Threads](https://github.com/ocornut/imgui/issues?q=label%3Agallery)!
 
 For a list of third-party widgets and extensions, check out the [Useful Extensions/Widgets](https://github.com/ocornut/imgui/wiki/Useful-Extensions) wiki page.
 
@@ -170,11 +170,11 @@ Private support is available for paying business customers (E-mail: _contact @ d
 
 **Which version should I get?**
 
-We occasionally tag [Releases](https://github.com/ocornut/imgui/releases) (with nice releases notes) but it is generally safe and recommended to sync to latest `master` or `docking` branch. The library is fairly stable and regressions tend to be fixed fast when reported. Advanced users may want to use the `docking` branch with [Multi-Viewport](https://github.com/ocornut/imgui/issues/1542) and [Docking](https://github.com/ocornut/imgui/issues/2109) features. This branch is kept in sync with master regularly.
+We occasionally tag [Releases](https://github.com/ocornut/imgui/releases) (with nice releases notes) but it is generally safe and recommended to sync to latest `master` or `docking` branch. The library is fairly stable and regressions tend to be fixed fast when reported. Advanced users may want to use the `docking` branch with [Multi-Viewport](https://github.com/ocornut/imgui/wiki/Multi-Viewports) and [Docking](https://github.com/ocornut/imgui/wiki/Docking) features. This branch is kept in sync with master regularly.
 
 **Who uses Dear ImGui?**
 
-See the [Quotes](https://github.com/ocornut/imgui/wiki/Quotes), [Funding & Sponsors](https://github.com/ocornut/imgui/wiki/Funding), and [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) Wiki pages for an idea of who is using Dear ImGui. Please add your game/software if you can! Also, see the [Gallery Threads](https://github.com/ocornut/imgui/issues/7503)!
+See the [Quotes](https://github.com/ocornut/imgui/wiki/Quotes), [Funding & Sponsors](https://github.com/ocornut/imgui/wiki/Funding), and [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) Wiki pages for an idea of who is using Dear ImGui. Please add your game/software if you can! Also, see the [Gallery Threads](https://github.com/ocornut/imgui/issues?q=label%3Agallery)!
 
 How to help
 -----------

docs/TODO.txt

@@ -65,7 +65,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - selectable: generic BeginSelectable()/EndSelectable() mechanism. (work out alongside range-select branch)
  - selectable: a way to visualize partial/mixed selection (e.g. parent tree node has children with mixed selection)
 
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. (WIP branch)
  - input text: preserve scrolling when unfocused?
  - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
  - input text: expose CursorPos in char filter event (#816)
@@ -218,11 +217,11 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - tree node/opt: could avoid formatting when clipped (flag assuming we don't care about width/height, assume single line height? format only %s/%c to be able to count height?)
 
  - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
+ - settings: facilitate extension lazily calling AddSettingsHandler() while running and still getting their data call the ReadXXX handlers immediately.
  - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
  - settings/persistence: helpers to make TreeNodeBehavior persist (even during dev!) - may need to store some semantic and/or data type in ImGuiStoragePair
 
  - style: better default styles. (#707)
- - style: PushStyleVar: allow direct access to individual float X/Y elements.
  - style: add a highlighted text color (for headers, etc.)
  - style: border types: out-screen, in-screen, etc. (#447)
  - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)

examples/example_glfw_opengl2/main.cpp

@@ -103,6 +103,11 @@ int main(int, char**)
         // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
         // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
         glfwPollEvents();
+        if (glfwGetWindowAttrib(window, GLFW_ICONIFIED) != 0)
+        {
+            ImGui_ImplGlfw_Sleep(10);
+            continue;
+        }
 
         // Start the Dear ImGui frame
         ImGui_ImplOpenGL2_NewFrame();

examples/example_glfw_opengl3/main.cpp

@@ -139,6 +139,11 @@ int main(int, char**)
         // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
         // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
         glfwPollEvents();
+        if (glfwGetWindowAttrib(window, GLFW_ICONIFIED) != 0)
+        {
+            ImGui_ImplGlfw_Sleep(10);
+            continue;
+        }
 
         // Start the Dear ImGui frame
         ImGui_ImplOpenGL3_NewFrame();

examples/example_glfw_vulkan/main.cpp

@@ -506,6 +506,11 @@ int main(int, char**)
             g_MainWindowData.FrameIndex = 0;
             g_SwapChainRebuild = false;
         }
+        if (glfwGetWindowAttrib(window, GLFW_ICONIFIED) != 0)
+        {
+            ImGui_ImplGlfw_Sleep(10);
+            continue;
+        }
 
         // Start the Dear ImGui frame
         ImGui_ImplVulkan_NewFrame();

examples/example_glfw_wgpu/CMakeLists.txt

@@ -79,6 +79,11 @@ add_executable(example_glfw_wgpu
   ${IMGUI_DIR}/imgui_tables.cpp
   ${IMGUI_DIR}/imgui_widgets.cpp
 )
+IF(NOT EMSCRIPTEN)
+  target_compile_definitions(example_glfw_wgpu PUBLIC
+    "IMGUI_IMPL_WEBGPU_BACKEND_DAWN"
+  )
+endif()
 target_include_directories(example_glfw_wgpu PUBLIC
   ${IMGUI_DIR}
   ${IMGUI_DIR}/backends
@@ -91,7 +96,6 @@ if(EMSCRIPTEN)
   if("${IMGUI_EMSCRIPTEN_GLFW3}" STREQUAL "--use-port=contrib.glfw3")
     target_compile_options(example_glfw_wgpu PUBLIC
         "${IMGUI_EMSCRIPTEN_GLFW3}"
-        "-DEMSCRIPTEN_USE_PORT_CONTRIB_GLFW3" # unnecessary beyond emscripten 3.1.59
     )
   endif()
   message(STATUS "Using ${IMGUI_EMSCRIPTEN_GLFW3} GLFW implementation")

examples/example_glfw_wgpu/main.cpp

@@ -152,6 +152,11 @@ int main(int, char**)
         // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
         // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
         glfwPollEvents();
+        if (glfwGetWindowAttrib(window, GLFW_ICONIFIED) != 0)
+        {
+            ImGui_ImplGlfw_Sleep(10);
+            continue;
+        }
 
         // React to changes in screen size
         int width, height;

examples/example_null/Makefile

@@ -1,6 +1,6 @@
 #
 # Cross Platform Makefile
-# Compatible with MSYS2/MINGW, Ubuntu 14.04.1 and Mac OS X
+# Compatible with MSYS2/MINGW, Ubuntu 14.04.1+ and Mac OS X
 #
 # Important: This is a "null backend" application, with no visible output or interaction!
 # This is used for testing purpose and continuous integration, and has little use for end-user.

examples/example_sdl2_directx11/main.cpp

@@ -138,6 +138,11 @@ int main(int, char**)
                 CreateRenderTarget();
             }
         }
+        if (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED)
+        {
+            SDL_Delay(10);
+            continue;
+        }
 
         // Start the Dear ImGui frame
         ImGui_ImplDX11_NewFrame();

examples/example_sdl2_opengl2/main.cpp

@@ -117,6 +117,11 @@ int main(int, char**)
             if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
                 done = true;
         }
+        if (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED)
+        {
+            SDL_Delay(10);
+            continue;
+        }
 
         // Start the Dear ImGui frame
         ImGui_ImplOpenGL2_NewFrame();

examples/example_sdl2_opengl3/main.cpp

@@ -152,6 +152,11 @@ int main(int, char**)
             if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
                 done = true;
         }
+        if (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED)
+        {
+            SDL_Delay(10);
+            continue;
+        }
 
         // Start the Dear ImGui frame
         ImGui_ImplOpenGL3_NewFrame();

examples/example_sdl2_sdlrenderer2/main.cpp

@@ -47,7 +47,7 @@ int main(int, char**)
     if (renderer == nullptr)
     {
         SDL_Log("Error creating SDL_Renderer!");
-        return 0;
+        return -1;
     }
     //SDL_RendererInfo info;
     //SDL_GetRendererInfo(renderer, &info);
@@ -108,6 +108,11 @@ int main(int, char**)
             if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
                 done = true;
         }
+        if (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED)
+        {
+            SDL_Delay(10);
+            continue;
+        }
 
         // Start the Dear ImGui frame
         ImGui_ImplSDLRenderer2_NewFrame();

examples/example_sdl2_vulkan/main.cpp

@@ -504,6 +504,11 @@ int main(int, char**)
             if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
                 done = true;
         }
+        if (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED)
+        {
+            SDL_Delay(10);
+            continue;
+        }
 
         // Resize swap chain?
         int fb_width, fb_height;

examples/example_sdl3_opengl3/README.md

@@ -9,11 +9,11 @@ Use the provided project file (.vcxproj). Add to solution (imgui_examples.sln) i
 
 Use build_win32.bat or directly:
 ```
-set SDL2_DIR=path_to_your_sdl3_folder
-cl /Zi /MD /utf-8 /I.. /I..\.. /I%SDL2_DIR%\include main.cpp ..\..\backends\imgui_impl_sdl3.cpp ..\..\backends\imgui_impl_opengl3.cpp ..\..\imgui*.cpp /FeDebug/example_sdl3_opengl3.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x86 SDL3.lib opengl32.lib /subsystem:console
+set SDL3_DIR=path_to_your_sdl3_folder
+cl /Zi /MD /utf-8 /I.. /I..\.. /I%SDL3_DIR%\include main.cpp ..\..\backends\imgui_impl_sdl3.cpp ..\..\backends\imgui_impl_opengl3.cpp ..\..\imgui*.cpp /FeDebug/example_sdl3_opengl3.exe /FoDebug/ /link /libpath:%SDL3_DIR%\lib\x86 SDL3.lib opengl32.lib /subsystem:console
 #                 ^^ include paths     ^^ source files                                                                                    ^^ output exe                    ^^ output dir   ^^ libraries
 # or for 64-bit:
-cl /Zi /MD /utf-8 /I.. /I..\.. /I%SDL2_DIR%\include main.cpp ..\..\backends\imgui_impl_sdl3.cpp ..\..\backends\imgui_impl_opengl3.cpp ..\..\imgui*.cpp /FeDebug/example_sdl3_opengl3.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x64 SDL3.lib SDL2mainopengl32.lib /subsystem:console
+cl /Zi /MD /utf-8 /I.. /I..\.. /I%SDL3_DIR%\include main.cpp ..\..\backends\imgui_impl_sdl3.cpp ..\..\backends\imgui_impl_opengl3.cpp ..\..\imgui*.cpp /FeDebug/example_sdl3_opengl3.exe /FoDebug/ /link /libpath:%SDL3_DIR%\lib\x64 SDL3.lib SDL2mainopengl32.lib /subsystem:console
 ```
 
 ## Linux and similar Unixes

examples/example_sdl3_opengl3/main.cpp

@@ -27,7 +27,7 @@
 int main(int, char**)
 {
     // Setup SDL
-    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMEPAD) != 0)
+    if (!SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMEPAD))
     {
         printf("Error: SDL_Init(): %s\n", SDL_GetError());
         return -1;
@@ -148,6 +148,11 @@ int main(int, char**)
             if (event.type == SDL_EVENT_WINDOW_CLOSE_REQUESTED && event.window.windowID == SDL_GetWindowID(window))
                 done = true;
         }
+        if (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED)
+        {
+            SDL_Delay(10);
+            continue;
+        }
 
         // Start the Dear ImGui frame
         ImGui_ImplOpenGL3_NewFrame();

examples/example_sdl3_sdlrenderer3/main.cpp

@@ -25,7 +25,7 @@
 int main(int, char**)
 {
     // Setup SDL
-    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMEPAD) != 0)
+    if (!SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMEPAD))
     {
         printf("Error: SDL_Init(): %s\n", SDL_GetError());
         return -1;
@@ -112,6 +112,11 @@ int main(int, char**)
             if (event.type == SDL_EVENT_WINDOW_CLOSE_REQUESTED && event.window.windowID == SDL_GetWindowID(window))
                 done = true;
         }
+        if (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED)
+        {
+            SDL_Delay(10);
+            continue;
+        }
 
         // Start the Dear ImGui frame
         ImGui_ImplSDLRenderer3_NewFrame();
@@ -163,6 +168,9 @@ int main(int, char**)
         ImGui_ImplSDLRenderer3_RenderDrawData(ImGui::GetDrawData(), renderer);
         SDL_RenderPresent(renderer);
     }
+#ifdef __EMSCRIPTEN__
+    EMSCRIPTEN_MAINLOOP_END;
+#endif
 
     // Cleanup
     ImGui_ImplSDLRenderer3_Shutdown();

examples/example_win32_opengl3/build_mingw.bat

@@ -0,0 +1,8 @@
+@REM Build for MINGW64 or 32 from MSYS2. 
+@set OUT_DIR=Debug
+@set OUT_EXE=example_win32_opengl3
+@set INCLUDES=-I../.. -I../../backends
+@set SOURCES=main.cpp ../../backends/imgui_impl_opengl3.cpp ../../backends/imgui_impl_win32.cpp ../../imgui*.cpp
+@set LIBS=-lopengl32 -lgdi32 -ldwmapi
+mkdir %OUT_DIR%
+g++ -DUNICODE %INCLUDES% %SOURCES% -o %OUT_DIR%/%OUT_EXE%.exe --static -mwindows %LIBS% %LIBS%

examples/example_win32_opengl3/main.cpp

@@ -168,6 +168,11 @@ int main(int, char**)
         }
         if (done)
             break;
+        if (::IsIconic(hwnd))
+        {
+            ::Sleep(10);
+            continue;
+        }
 
         // Start the Dear ImGui frame
         ImGui_ImplOpenGL3_NewFrame();

examples/libs/emscripten/emscripten_mainloop_stub.h

@@ -17,20 +17,21 @@
 // - So the next logical step was to refactor all examples to follow that layout of using a "main loop" function.
 //   This worked, but it made us lose all the nice things we had...
 
-// Since only about 3 examples really need to run with Emscripten, here's our solution:
+// Since only about 4 examples really need to run with Emscripten, here's our solution:
 // - Use some weird macros and capturing lambda to turn a loop in main() into a function.
 // - Hide all that crap in this file so it doesn't make our examples unusually ugly.
 //   As a stance and principle of Dear ImGui development we don't use C++ headers and we don't
 //   want to suggest to the newcomer that we would ever use C++ headers as this would affect
 //   the initial judgment of many of our target audience.
 // - Technique is based on this idea: https://github.com/ocornut/imgui/pull/2492/
+// - The do { } while (0) is to allow our code calling continue in the main loop.
 #ifdef __EMSCRIPTEN__
 #include <emscripten.h>
 #include <functional>
 static std::function<void()>            MainLoopForEmscriptenP;
 static void MainLoopForEmscripten()     { MainLoopForEmscriptenP(); }
-#define EMSCRIPTEN_MAINLOOP_BEGIN       MainLoopForEmscriptenP = [&]()
-#define EMSCRIPTEN_MAINLOOP_END         ; emscripten_set_main_loop(MainLoopForEmscripten, 0, true)
+#define EMSCRIPTEN_MAINLOOP_BEGIN       MainLoopForEmscriptenP = [&]() { do
+#define EMSCRIPTEN_MAINLOOP_END         while (0); }; emscripten_set_main_loop(MainLoopForEmscripten, 0, true)
 #else
 #define EMSCRIPTEN_MAINLOOP_BEGIN
 #define EMSCRIPTEN_MAINLOOP_END

imconfig.h

@@ -43,7 +43,7 @@
 //#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS         // [Win32] [Default with non-Visual Studio compilers] Don't implement default IME handler (won't require imm32.lib/.a)
 //#define IMGUI_DISABLE_WIN32_FUNCTIONS                     // [Win32] Won't use and link with any Win32 function (clipboard, IME).
 //#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS      // [OSX] Implement default OSX clipboard handler (need to link with '-framework ApplicationServices', this is why this is not the default).
-//#define IMGUI_DISABLE_DEFAULT_SHELL_FUNCTIONS             // Don't implement default io.PlatformOpenInShellFn() handler (Win32: ShellExecute(), require shell32.lib/.a, Mac/Linux: use system("")).
+//#define IMGUI_DISABLE_DEFAULT_SHELL_FUNCTIONS             // Don't implement default platform_io.Platform_OpenInShellFn() handler (Win32: ShellExecute(), require shell32.lib/.a, Mac/Linux: use system("")).
 //#define IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS            // Don't implement ImFormatString/ImFormatStringV so you can implement them yourself (e.g. if you don't want to link with vsnprintf)
 //#define IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS              // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 so you can implement them yourself.
 //#define IMGUI_DISABLE_FILE_FUNCTIONS                      // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle at all (replace them with dummies)

imgui.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.91.0
+// dear imgui, v1.91.2
 // (main code and documentation)
 
 // Help:
@@ -10,7 +10,7 @@
 // - FAQ ........................ https://dearimgui.com/faq (in repository as docs/FAQ.md)
 // - Homepage ................... https://github.com/ocornut/imgui
 // - Releases & changelog ....... https://github.com/ocornut/imgui/releases
-// - Gallery .................... https://github.com/ocornut/imgui/issues/7503 (please post your screenshots/video there!)
+// - Gallery .................... https://github.com/ocornut/imgui/issues?q=label%3Agallery (please post your screenshots/video there!)
 // - Wiki ....................... https://github.com/ocornut/imgui/wiki (lots of good stuff there)
 //   - Getting Started            https://github.com/ocornut/imgui/wiki/Getting-Started (how to integrate in an existing app by adding ~25 lines of code)
 //   - Third-party Extensions     https://github.com/ocornut/imgui/wiki/Useful-Extensions (ImPlot & many more)
@@ -63,7 +63,7 @@ CODE
 // [SECTION] INCLUDES
 // [SECTION] FORWARD DECLARATIONS
 // [SECTION] CONTEXT AND MEMORY ALLOCATORS
-// [SECTION] USER FACING STRUCTURES (ImGuiStyle, ImGuiIO)
+// [SECTION] USER FACING STRUCTURES (ImGuiStyle, ImGuiIO, ImGuiPlatformIO)
 // [SECTION] MISC HELPERS/UTILITIES (Geometry functions)
 // [SECTION] MISC HELPERS/UTILITIES (String, Format, Hash functions)
 // [SECTION] MISC HELPERS/UTILITIES (File functions)
@@ -438,6 +438,20 @@ CODE
                           - likewise io.MousePos and GetMousePos() will use OS coordinates.
                             If you query mouse positions to interact with non-imgui coordinates you will need to offset them, e.g. subtract GetWindowViewport()->Pos.
 
+ - 2024/08/23 (1.91.1) - renamed ImGuiChildFlags_Border to ImGuiChildFlags_Borders for consistency. kept inline redirection flag.
+ - 2024/08/22 (1.91.1) - moved some functions from ImGuiIO to ImGuiPlatformIO structure:
+                            - io.GetClipboardTextFn         -> platform_io.Platform_GetClipboardTextFn + changed 'void* user_data' to 'ImGuiContext* ctx'. Pull your user data from platform_io.ClipboardUserData.
+                            - io.SetClipboardTextFn         -> platform_io.Platform_SetClipboardTextFn + same as above line.
+                            - io.PlatformOpenInShellFn      -> platform_io.Platform_OpenInShellFn (#7660)
+                            - io.PlatformSetImeDataFn       -> platform_io.Platform_SetImeDataFn
+                            - io.PlatformLocaleDecimalPoint -> platform_io.Platform_LocaleDecimalPoint (#7389, #6719, #2278)
+                            - access those via GetPlatformIO() instead of GetIO().
+                         some were introduced very recently and often automatically setup by core library and backends, so for those we are exceptionally not maintaining a legacy redirection symbol.
+                       - commented the old ImageButton() signature obsoleted in 1.89 (~August 2022). As a reminder:
+                            - old ImageButton() before 1.89 used ImTextureId as item id (created issue with e.g. multiple buttons in same scope, transient texture id values, opaque computation of ID)
+                            - new ImageButton() since 1.89 requires an explicit 'const char* str_id'
+                            - old ImageButton() before 1.89 had frame_padding' override argument.
+                            - new ImageButton() since 1.89 always use style.FramePadding, which you can freely override with PushStyleVar()/PopStyleVar().
  - 2024/07/25 (1.91.0) - obsoleted GetContentRegionMax(), GetWindowContentRegionMin() and GetWindowContentRegionMax(). (see #7838 on GitHub for more info)
                          you should never need those functions. you can do everything with GetCursorScreenPos() and GetContentRegionAvail() in a more simple way.
                             - instead of:  GetWindowContentRegionMax().x - GetCursorPos().x
@@ -512,6 +526,7 @@ CODE
                            - new: BeginChild("Name", size, ImGuiChildFlags_Border)
                            - old: BeginChild("Name", size, false)
                            - new: BeginChild("Name", size) or BeginChild("Name", 0) or BeginChild("Name", size, ImGuiChildFlags_None)
+                         **AMEND FROM THE FUTURE: from 1.91.1, 'ImGuiChildFlags_Border' is called 'ImGuiChildFlags_Borders'**
  - 2023/11/02 (1.90.0) - BeginChild: added child-flag ImGuiChildFlags_AlwaysUseWindowPadding as a replacement for the window-flag ImGuiWindowFlags_AlwaysUseWindowPadding: the feature only ever made sense for BeginChild() anyhow.
                            - old: BeginChild("Name", size, 0, ImGuiWindowFlags_AlwaysUseWindowPadding);
                            - new: BeginChild("Name", size, ImGuiChildFlags_AlwaysUseWindowPadding, 0);
@@ -1154,11 +1169,11 @@ static void             WindowSettingsHandler_ReadLine(ImGuiContext*, ImGuiSetti
 static void             WindowSettingsHandler_ApplyAll(ImGuiContext*, ImGuiSettingsHandler*);
 static void             WindowSettingsHandler_WriteAll(ImGuiContext*, ImGuiSettingsHandler*, ImGuiTextBuffer* buf);
 
-// Platform Dependents default implementation for IO functions
-static const char*      GetClipboardTextFn_DefaultImpl(void* user_data_ctx);
-static void             SetClipboardTextFn_DefaultImpl(void* user_data_ctx, const char* text);
-static void             PlatformSetImeDataFn_DefaultImpl(ImGuiContext* ctx, ImGuiViewport* viewport, ImGuiPlatformImeData* data);
-static bool             PlatformOpenInShellFn_DefaultImpl(ImGuiContext* ctx, const char* path);
+// Platform Dependents default implementation for ImGuiPlatformIO functions
+static const char*      Platform_GetClipboardTextFn_DefaultImpl(ImGuiContext* ctx);
+static void             Platform_SetClipboardTextFn_DefaultImpl(ImGuiContext* ctx, const char* text);
+static void             Platform_SetImeDataFn_DefaultImpl(ImGuiContext* ctx, ImGuiViewport* viewport, ImGuiPlatformImeData* data);
+static bool             Platform_OpenInShellFn_DefaultImpl(ImGuiContext* ctx, const char* path);
 
 namespace ImGui
 {
@@ -1269,7 +1284,7 @@ static ImGuiMemFreeFunc     GImAllocatorFreeFunc = FreeWrapper;
 static void*                GImAllocatorUserData = NULL;
 
 //-----------------------------------------------------------------------------
-// [SECTION] USER FACING STRUCTURES (ImGuiStyle, ImGuiIO)
+// [SECTION] USER FACING STRUCTURES (ImGuiStyle, ImGuiIO, ImGuiPlatformIO)
 //-----------------------------------------------------------------------------
 
 ImGuiStyle::ImGuiStyle()
@@ -1419,6 +1434,8 @@ ImGuiIO::ImGuiIO()
     ConfigWindowsResizeFromEdges = true;
     ConfigWindowsMoveFromTitleBarOnly = false;
     ConfigMemoryCompactTimer = 60.0f;
+    ConfigDebugIsDebuggerPresent = false;
+    ConfigDebugHighlightIdConflicts = true;
     ConfigDebugBeginReturnValueOnce = false;
     ConfigDebugBeginReturnValueLoop = false;
 
@@ -1433,8 +1450,6 @@ ImGuiIO::ImGuiIO()
     // Note: Initialize() will setup default clipboard/ime handlers.
     BackendPlatformName = BackendRendererName = NULL;
     BackendPlatformUserData = BackendRendererUserData = BackendLanguageUserData = NULL;
-    PlatformOpenInShellUserData = NULL;
-    PlatformLocaleDecimalPoint = '.';
 
     // Input (NB: we already have memset zero the entire structure!)
     MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
@@ -1823,6 +1838,13 @@ void ImGuiIO::AddFocusEvent(bool focused)
     g.InputEventsQueue.push_back(e);
 }
 
+ImGuiPlatformIO::ImGuiPlatformIO()
+{
+    // Most fields are initialized with zero
+    memset(this, 0, sizeof(*this));
+    Platform_LocaleDecimalPoint = '.';
+}
+
 //-----------------------------------------------------------------------------
 // [SECTION] MISC HELPERS/UTILITIES (Geometry functions)
 //-----------------------------------------------------------------------------
@@ -2013,7 +2035,7 @@ const char* ImStreolRange(const char* str, const char* str_end)
     return p ? p : str_end;
 }
 
-const ImWchar* ImStrbolW(const ImWchar* buf_mid_line, const ImWchar* buf_begin) // find beginning-of-line
+const char* ImStrbol(const char* buf_mid_line, const char* buf_begin) // find beginning-of-line
 {
     while (buf_mid_line > buf_begin && buf_mid_line[-1] != '\n')
         buf_mid_line--;
@@ -3376,28 +3398,56 @@ void ImGui::PushStyleVar(ImGuiStyleVar idx, float val)
 {
     ImGuiContext& g = *GImGui;
     const ImGuiDataVarInfo* var_info = GetStyleVarInfo(idx);
-    if (var_info->Type == ImGuiDataType_Float && var_info->Count == 1)
+    if (var_info->Type != ImGuiDataType_Float || var_info->Count != 1)
     {
-        float* pvar = (float*)var_info->GetVarPtr(&g.Style);
-        g.StyleVarStack.push_back(ImGuiStyleMod(idx, *pvar));
-        *pvar = val;
+        IM_ASSERT_USER_ERROR(0, "Calling PushStyleVar() variant with wrong type!");
         return;
     }
-    IM_ASSERT_USER_ERROR(0, "Calling PushStyleVar() variant with wrong type!");
+    float* pvar = (float*)var_info->GetVarPtr(&g.Style);
+    g.StyleVarStack.push_back(ImGuiStyleMod(idx, *pvar));
+    *pvar = val;
+}
+
+void ImGui::PushStyleVarX(ImGuiStyleVar idx, float val_x)
+{
+    ImGuiContext& g = *GImGui;
+    const ImGuiDataVarInfo* var_info = GetStyleVarInfo(idx);
+    if (var_info->Type != ImGuiDataType_Float || var_info->Count != 2)
+    {
+        IM_ASSERT_USER_ERROR(0, "Calling PushStyleVar() variant with wrong type!");
+        return;
+    }
+    ImVec2* pvar = (ImVec2*)var_info->GetVarPtr(&g.Style);
+    g.StyleVarStack.push_back(ImGuiStyleMod(idx, *pvar));
+    pvar->x = val_x;
+}
+
+void ImGui::PushStyleVarY(ImGuiStyleVar idx, float val_y)
+{
+    ImGuiContext& g = *GImGui;
+    const ImGuiDataVarInfo* var_info = GetStyleVarInfo(idx);
+    if (var_info->Type != ImGuiDataType_Float || var_info->Count != 2)
+    {
+        IM_ASSERT_USER_ERROR(0, "Calling PushStyleVar() variant with wrong type!");
+        return;
+    }
+    ImVec2* pvar = (ImVec2*)var_info->GetVarPtr(&g.Style);
+    g.StyleVarStack.push_back(ImGuiStyleMod(idx, *pvar));
+    pvar->y = val_y;
 }
 
 void ImGui::PushStyleVar(ImGuiStyleVar idx, const ImVec2& val)
 {
     ImGuiContext& g = *GImGui;
     const ImGuiDataVarInfo* var_info = GetStyleVarInfo(idx);
-    if (var_info->Type == ImGuiDataType_Float && var_info->Count == 2)
+    if (var_info->Type != ImGuiDataType_Float || var_info->Count != 2)
     {
-        ImVec2* pvar = (ImVec2*)var_info->GetVarPtr(&g.Style);
-        g.StyleVarStack.push_back(ImGuiStyleMod(idx, *pvar));
-        *pvar = val;
+        IM_ASSERT_USER_ERROR(0, "Calling PushStyleVar() variant with wrong type!");
         return;
     }
-    IM_ASSERT_USER_ERROR(0, "Calling PushStyleVar() variant with wrong type!");
+    ImVec2* pvar = (ImVec2*)var_info->GetVarPtr(&g.Style);
+    g.StyleVarStack.push_back(ImGuiStyleMod(idx, *pvar));
+    *pvar = val;
 }
 
 void ImGui::PopStyleVar(int count)
@@ -3660,13 +3710,13 @@ void ImGui::RenderTextEllipsis(ImDrawList* draw_list, const ImVec2& pos_min, con
 }
 
 // Render a rectangle shaped with optional rounding and borders
-void ImGui::RenderFrame(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, bool border, float rounding)
+void ImGui::RenderFrame(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, bool borders, float rounding)
 {
     ImGuiContext& g = *GImGui;
     ImGuiWindow* window = g.CurrentWindow;
     window->DrawList->AddRectFilled(p_min, p_max, fill_col, rounding);
     const float border_size = g.Style.FrameBorderSize;
-    if (border && border_size > 0.0f)
+    if (borders && border_size > 0.0f)
     {
         window->DrawList->AddRect(p_min + ImVec2(1, 1), p_max + ImVec2(1, 1), GetColorU32(ImGuiCol_BorderShadow), rounding, 0, border_size);
         window->DrawList->AddRect(p_min, p_max, GetColorU32(ImGuiCol_Border), rounding, 0, border_size);
@@ -3720,7 +3770,8 @@ void ImGui::RenderNavHighlight(const ImRect& bb, ImGuiID id, ImGuiNavHighlightFl
 void ImGui::RenderMouseCursor(ImVec2 base_pos, float base_scale, ImGuiMouseCursor mouse_cursor, ImU32 col_fill, ImU32 col_border, ImU32 col_shadow)
 {
     ImGuiContext& g = *GImGui;
-    IM_ASSERT(mouse_cursor > ImGuiMouseCursor_None && mouse_cursor < ImGuiMouseCursor_COUNT);
+    if (mouse_cursor <= ImGuiMouseCursor_None || mouse_cursor >= ImGuiMouseCursor_COUNT) // We intentionally accept out of bound values.
+        mouse_cursor = ImGuiMouseCursor_Arrow;
     ImFontAtlas* font_atlas = g.DrawListSharedData.Font->ContainerAtlas;
     for (ImGuiViewportP* viewport : g.Viewports)
     {
@@ -3800,7 +3851,7 @@ void ImGui::DestroyContext(ImGuiContext* ctx)
     IM_DELETE(ctx);
 }
 
-// IMPORTANT: ###xxx suffixes must be same in ALL languages to allow for automation.
+// IMPORTANT: interactive elements requires a fixed ###xxx suffix, it must be same in ALL languages to allow for automation.
 static const ImGuiLocEntry GLocalizationEntriesEnUS[] =
 {
     { ImGuiLocKey_VersionStr,           "Dear ImGui " IMGUI_VERSION " (" IM_STRINGIFY(IMGUI_VERSION_NUM) ")" },
@@ -3811,8 +3862,9 @@ static const ImGuiLocEntry GLocalizationEntriesEnUS[] =
     { ImGuiLocKey_WindowingMainMenuBar, "(Main menu bar)"                       },
     { ImGuiLocKey_WindowingPopup,       "(Popup)"                               },
     { ImGuiLocKey_WindowingUntitled,    "(Untitled)"                            },
+    { ImGuiLocKey_OpenLink_s,           "Open '%s'"                             },
     { ImGuiLocKey_CopyLink,             "Copy Link###CopyLink"                  },
-    { ImGuiLocKey_DockingHideTabBar,    "Hide tab bar###HideTabBar"             },
+    { ImGuiLocKey_DockingHideTabBar,            "Hide tab bar###HideTabBar"             },
     { ImGuiLocKey_DockingHoldShiftToDock,       "Hold SHIFT to enable Docking window."  },
     { ImGuiLocKey_DockingDragToUndockOrMoveNode,"Click and drag to move or undock whole node."    },
 };
@@ -3839,12 +3891,11 @@ void ImGui::Initialize()
     // Setup default localization table
     LocalizeRegisterEntries(GLocalizationEntriesEnUS, IM_ARRAYSIZE(GLocalizationEntriesEnUS));
 
-    // Setup default platform clipboard/IME handlers.
-    g.IO.GetClipboardTextFn = GetClipboardTextFn_DefaultImpl;    // Platform dependent default implementations
-    g.IO.SetClipboardTextFn = SetClipboardTextFn_DefaultImpl;
-    g.IO.ClipboardUserData = (void*)&g;                          // Default implementation use the ImGuiContext as user data (ideally those would be arguments to the function)
-    g.IO.PlatformOpenInShellFn = PlatformOpenInShellFn_DefaultImpl;
-    g.IO.PlatformSetImeDataFn = PlatformSetImeDataFn_DefaultImpl;
+    // Setup default ImGuiPlatformIO clipboard/IME handlers.
+    g.PlatformIO.Platform_GetClipboardTextFn = Platform_GetClipboardTextFn_DefaultImpl;    // Platform dependent default implementations
+    g.PlatformIO.Platform_SetClipboardTextFn = Platform_SetClipboardTextFn_DefaultImpl;
+    g.PlatformIO.Platform_OpenInShellFn = Platform_OpenInShellFn_DefaultImpl;
+    g.PlatformIO.Platform_SetImeDataFn = Platform_SetImeDataFn_DefaultImpl;
 
     // Create default viewport
     ImGuiViewportP* viewport = IM_NEW(ImGuiViewportP)();
@@ -4047,7 +4098,7 @@ static void SetCurrentWindow(ImGuiWindow* window)
     if (window)
     {
         g.FontSize = g.DrawListSharedData.FontSize = window->CalcFontSize();
-        g.FontScale = g.FontSize / g.Font->FontSize;
+        g.FontScale = g.DrawListSharedData.FontScale = g.FontSize / g.Font->FontSize;
         ImGui::NavUpdateCurrentWindowIsScrollPushableX();
     }
 }
@@ -4310,7 +4361,7 @@ bool ImGui::IsItemHovered(ImGuiHoveredFlags flags)
     const float delay = CalcDelayFromHoveredFlags(flags);
     if (delay > 0.0f || (flags & ImGuiHoveredFlags_Stationary))
     {
-        ImGuiID hover_delay_id = (g.LastItemData.ID != 0) ? g.LastItemData.ID : window->GetIDFromRectangle(g.LastItemData.Rect);
+        ImGuiID hover_delay_id = (g.LastItemData.ID != 0) ? g.LastItemData.ID : window->GetIDFromPos(g.LastItemData.Rect.Min);
         if ((flags & ImGuiHoveredFlags_NoSharedDelay) && (g.HoverItemDelayIdPreviousFrame != hover_delay_id))
             g.HoverItemDelayTimer = 0.0f;
         g.HoverItemDelayId = hover_delay_id;
@@ -4338,6 +4389,17 @@ bool ImGui::ItemHoverable(const ImRect& bb, ImGuiID id, ImGuiItemFlags item_flag
 {
     ImGuiContext& g = *GImGui;
     ImGuiWindow* window = g.CurrentWindow;
+
+    // Detect ID conflicts
+#ifndef IMGUI_DISABLE_DEBUG_TOOLS
+    if (id != 0 && g.HoveredIdPreviousFrame == id && (item_flags & ImGuiItemFlags_AllowDuplicateId) == 0)
+    {
+        g.HoveredIdPreviousFrameItemCount++;
+        if (g.DebugDrawIdConflicts == id)
+            window->DrawList->AddRect(bb.Min - ImVec2(1,1), bb.Max + ImVec2(1,1), IM_COL32(255, 0, 0, 255), 0.0f, ImDrawFlags_None, 2.0f);
+    }
+#endif
+
     if (g.HoveredWindow != window)
         return false;
     if (!IsMouseHoveringRect(bb.Min, bb.Max))
@@ -4377,7 +4439,7 @@ bool ImGui::ItemHoverable(const ImRect& bb, ImGuiID id, ImGuiItemFlags item_flag
 
         // Display shortcut (only works with mouse)
         // (ImGuiItemStatusFlags_HasShortcut in LastItemData denotes we want a tooltip)
-        if (id == g.LastItemData.ID && (g.LastItemData.StatusFlags & ImGuiItemStatusFlags_HasShortcut))
+        if (id == g.LastItemData.ID && (g.LastItemData.StatusFlags & ImGuiItemStatusFlags_HasShortcut) && g.ActiveId != id)
             if (IsItemHovered(ImGuiHoveredFlags_ForTooltip | ImGuiHoveredFlags_DelayNormal))
                 SetTooltip("%s", GetKeyChordName(g.LastItemData.Shortcut));
     }
@@ -4511,14 +4573,14 @@ void ImGui::DebugAllocHook(ImGuiDebugAllocInfo* info, int frame_count, void* ptr
 const char* ImGui::GetClipboardText()
 {
     ImGuiContext& g = *GImGui;
-    return g.IO.GetClipboardTextFn ? g.IO.GetClipboardTextFn(g.IO.ClipboardUserData) : "";
+    return g.PlatformIO.Platform_GetClipboardTextFn ? g.PlatformIO.Platform_GetClipboardTextFn(&g) : "";
 }
 
 void ImGui::SetClipboardText(const char* text)
 {
     ImGuiContext& g = *GImGui;
-    if (g.IO.SetClipboardTextFn)
-        g.IO.SetClipboardTextFn(g.IO.ClipboardUserData, text);
+    if (g.PlatformIO.Platform_SetClipboardTextFn != NULL)
+        g.PlatformIO.Platform_SetClipboardTextFn(&g, text);
 }
 
 const char* ImGui::GetVersion()
@@ -4956,6 +5018,11 @@ void ImGui::NewFrame()
     if (g.DragDropActive && g.DragDropPayload.SourceId == g.ActiveId)
         KeepAliveID(g.DragDropPayload.SourceId);
 
+    // [DEBUG]
+    g.DebugDrawIdConflicts = 0;
+    if (g.IO.ConfigDebugHighlightIdConflicts && g.HoveredIdPreviousFrameItemCount > 1)
+        g.DebugDrawIdConflicts = g.HoveredIdPreviousFrame;
+
     // Update HoveredId data
     if (!g.HoveredIdPreviousFrame)
         g.HoveredIdTimer = 0.0f;
@@ -4966,6 +5033,7 @@ void ImGui::NewFrame()
     if (g.HoveredId && g.ActiveId != g.HoveredId)
         g.HoveredIdNotActiveTimer += g.IO.DeltaTime;
     g.HoveredIdPreviousFrame = g.HoveredId;
+    g.HoveredIdPreviousFrameItemCount = 0;
     g.HoveredId = 0;
     g.HoveredIdAllowOverlap = false;
     g.HoveredIdIsDisabled = false;
@@ -5265,6 +5333,8 @@ static void InitViewportDrawData(ImGuiViewportP* viewport)
 // - If the code here changes, may need to update code of functions like NextColumn() and PushColumnClipRect():
 //   some frequently called functions which to modify both channels and clipping simultaneously tend to use the
 //   more specialized SetWindowClipRectBeforeSetChannel() to avoid extraneous updates of underlying ImDrawCmds.
+// - This is analoguous to PushFont()/PopFont() in the sense that are a mixing a global stack and a window stack,
+//   which in the case of ClipRect is not so problematic but tends to be more restrictive for fonts.
 void ImGui::PushClipRect(const ImVec2& clip_rect_min, const ImVec2& clip_rect_max, bool intersect_with_current_clip_rect)
 {
     ImGuiWindow* window = GetCurrentWindow();
@@ -5413,19 +5483,42 @@ void ImGui::EndFrame()
         return;
     IM_ASSERT(g.WithinFrameScope && "Forgot to call ImGui::NewFrame()?");
 
+#ifndef IMGUI_DISABLE_DEBUG_TOOLS
+    if (g.DebugDrawIdConflicts != 0)
+    {
+        PushStyleColor(ImGuiCol_PopupBg, ImLerp(g.Style.Colors[ImGuiCol_PopupBg], ImVec4(1.0f, 0.0f, 0.0f, 1.0f), 0.10f));
+        if (g.DebugItemPickerActive == false && BeginTooltipEx(ImGuiTooltipFlags_OverridePrevious, ImGuiWindowFlags_None))
+        {
+            SeparatorText("MESSAGE FROM DEAR IMGUI");
+            Text("Programmer error: %d visible items with conflicting ID!", g.HoveredIdPreviousFrameItemCount);
+            BulletText("Code should use PushID()/PopID() in loops, or append \"##xx\" to same-label identifiers!");
+            BulletText("Empty label e.g. Button(\"\") == same ID as parent widget/node. Use Button(\"##xx\") instead!");
+            BulletText("Press F1 to open \"FAQ -> About the ID Stack System\" and read details.");
+            BulletText("Press CTRL+P to activate Item Picker and debug-break in item call-stack.");
+            BulletText("Set io.ConfigDebugDetectIdConflicts=false to disable this warning in non-programmers builds.");
+            EndTooltip();
+        }
+        PopStyleColor();
+        if (Shortcut(ImGuiMod_Ctrl | ImGuiKey_P, ImGuiInputFlags_RouteGlobal))
+            DebugStartItemPicker();
+        if (Shortcut(ImGuiKey_F1, ImGuiInputFlags_RouteGlobal) && g.PlatformIO.Platform_OpenInShellFn != NULL)
+            g.PlatformIO.Platform_OpenInShellFn(&g, "https://github.com/ocornut/imgui/blob/master/docs/FAQ.md#qa-usage");
+    }
+#endif
+
     CallContextHooks(&g, ImGuiContextHookType_EndFramePre);
 
     ErrorCheckEndFrameSanityChecks();
 
     // Notify Platform/OS when our Input Method Editor cursor has moved (e.g. CJK inputs using Microsoft IME)
     ImGuiPlatformImeData* ime_data = &g.PlatformImeData;
-    if (g.IO.PlatformSetImeDataFn != NULL && memcmp(ime_data, &g.PlatformImeDataPrev, sizeof(ImGuiPlatformImeData)) != 0)
+    if (g.PlatformIO.Platform_SetImeDataFn != NULL && memcmp(ime_data, &g.PlatformImeDataPrev, sizeof(ImGuiPlatformImeData)) != 0)
     {
         ImGuiViewport* viewport = FindViewportByID(g.PlatformImeViewport);
-        IMGUI_DEBUG_LOG_IO("[io] Calling io.PlatformSetImeDataFn(): WantVisible: %d, InputPos (%.2f,%.2f)\n", ime_data->WantVisible, ime_data->InputPos.x, ime_data->InputPos.y);
+        IMGUI_DEBUG_LOG_IO("[io] Calling Platform_SetImeDataFn(): WantVisible: %d, InputPos (%.2f,%.2f)\n", ime_data->WantVisible, ime_data->InputPos.x, ime_data->InputPos.y);
         if (viewport == NULL)
             viewport = GetMainViewport();
-        g.IO.PlatformSetImeDataFn(&g, viewport, ime_data);
+        g.PlatformIO.Platform_SetImeDataFn(&g, viewport, ime_data);
     }
 
     // Hide implicit/fallback "Debug" window if it hasn't been used
@@ -5837,7 +5930,7 @@ ImVec2 ImGui::GetItemRectSize()
 }
 
 // Prior to v1.90 2023/10/16, the BeginChild() function took a 'bool border = false' parameter instead of 'ImGuiChildFlags child_flags = 0'.
-// ImGuiChildFlags_Border is defined as always == 1 in order to allow old code passing 'true'. Read comments in imgui.h for details!
+// ImGuiChildFlags_Borders is defined as always == 1 in order to allow old code passing 'true'. Read comments in imgui.h for details!
 bool ImGui::BeginChild(const char* str_id, const ImVec2& size_arg, ImGuiChildFlags child_flags, ImGuiWindowFlags window_flags)
 {
     ImGuiID id = GetCurrentWindow()->GetID(str_id);
@@ -5856,7 +5949,7 @@ bool ImGui::BeginChildEx(const char* name, ImGuiID id, const ImVec2& size_arg, I
     IM_ASSERT(id != 0);
 
     // Sanity check as it is likely that some user will accidentally pass ImGuiWindowFlags into the ImGuiChildFlags argument.
-    const ImGuiChildFlags ImGuiChildFlags_SupportedMask_ = ImGuiChildFlags_Border | ImGuiChildFlags_AlwaysUseWindowPadding | ImGuiChildFlags_ResizeX | ImGuiChildFlags_ResizeY | ImGuiChildFlags_AutoResizeX | ImGuiChildFlags_AutoResizeY | ImGuiChildFlags_AlwaysAutoResize | ImGuiChildFlags_FrameStyle | ImGuiChildFlags_NavFlattened;
+    const ImGuiChildFlags ImGuiChildFlags_SupportedMask_ = ImGuiChildFlags_Borders | ImGuiChildFlags_AlwaysUseWindowPadding | ImGuiChildFlags_ResizeX | ImGuiChildFlags_ResizeY | ImGuiChildFlags_AutoResizeX | ImGuiChildFlags_AutoResizeY | ImGuiChildFlags_AlwaysAutoResize | ImGuiChildFlags_FrameStyle | ImGuiChildFlags_NavFlattened;
     IM_UNUSED(ImGuiChildFlags_SupportedMask_);
     IM_ASSERT((child_flags & ~ImGuiChildFlags_SupportedMask_) == 0 && "Illegal ImGuiChildFlags value. Did you pass ImGuiWindowFlags values instead of ImGuiChildFlags?");
     IM_ASSERT((window_flags & ImGuiWindowFlags_AlwaysAutoResize) == 0 && "Cannot specify ImGuiWindowFlags_AlwaysAutoResize for BeginChild(). Use ImGuiChildFlags_AlwaysAutoResize!");
@@ -5891,7 +5984,7 @@ bool ImGui::BeginChildEx(const char* name, ImGuiID id, const ImVec2& size_arg, I
         PushStyleVar(ImGuiStyleVar_ChildRounding, g.Style.FrameRounding);
         PushStyleVar(ImGuiStyleVar_ChildBorderSize, g.Style.FrameBorderSize);
         PushStyleVar(ImGuiStyleVar_WindowPadding, g.Style.FramePadding);
-        child_flags |= ImGuiChildFlags_Border | ImGuiChildFlags_AlwaysUseWindowPadding;
+        child_flags |= ImGuiChildFlags_Borders | ImGuiChildFlags_AlwaysUseWindowPadding;
         window_flags |= ImGuiWindowFlags_NoMove;
     }
 
@@ -5921,7 +6014,7 @@ bool ImGui::BeginChildEx(const char* name, ImGuiID id, const ImVec2& size_arg, I
 
     // Set style
     const float backup_border_size = g.Style.ChildBorderSize;
-    if ((child_flags & ImGuiChildFlags_Border) == 0)
+    if ((child_flags & ImGuiChildFlags_Borders) == 0)
         g.Style.ChildBorderSize = 0.0f;
 
     // Begin into window
@@ -6405,7 +6498,7 @@ static int ImGui::UpdateWindowManualResize(ImGuiWindow* window, const ImVec2& si
         ButtonBehavior(resize_rect, resize_grip_id, &hovered, &held, ImGuiButtonFlags_FlattenChildren | ImGuiButtonFlags_NoNavFocus);
         //GetForegroundDrawList(window)->AddRect(resize_rect.Min, resize_rect.Max, IM_COL32(255, 255, 0, 255));
         if (hovered || held)
-            g.MouseCursor = (resize_grip_n & 1) ? ImGuiMouseCursor_ResizeNESW : ImGuiMouseCursor_ResizeNWSE;
+            SetMouseCursor((resize_grip_n & 1) ? ImGuiMouseCursor_ResizeNESW : ImGuiMouseCursor_ResizeNWSE);
 
         if (held && g.IO.MouseDoubleClicked[0])
         {
@@ -6451,7 +6544,7 @@ static int ImGui::UpdateWindowManualResize(ImGuiWindow* window, const ImVec2& si
         if (hovered && g.HoveredIdTimer <= WINDOWS_RESIZE_FROM_EDGES_FEEDBACK_TIMER)
             hovered = false;
         if (hovered || held)
-            g.MouseCursor = (axis == ImGuiAxis_X) ? ImGuiMouseCursor_ResizeEW : ImGuiMouseCursor_ResizeNS;
+            SetMouseCursor((axis == ImGuiAxis_X) ? ImGuiMouseCursor_ResizeEW : ImGuiMouseCursor_ResizeNS);
         if (held && g.IO.MouseDoubleClicked[0])
         {
             // Double-clicking bottom or right border auto-fit on this axis
@@ -6896,15 +6989,28 @@ void ImGui::UpdateWindowSkipRefresh(ImGuiWindow* window)
             return;
         if (window->Hidden) // If was hidden (previous frame)
             return;
-        if ((g.NextWindowData.RefreshFlagsVal & ImGuiWindowRefreshFlags_RefreshOnHover) && g.HoveredWindow && window->RootWindow == g.HoveredWindow->RootWindow)
-            return;
-        if ((g.NextWindowData.RefreshFlagsVal & ImGuiWindowRefreshFlags_RefreshOnFocus) && g.NavWindow && window->RootWindow == g.NavWindow->RootWindow)
-            return;
+        if ((g.NextWindowData.RefreshFlagsVal & ImGuiWindowRefreshFlags_RefreshOnHover) && g.HoveredWindow)
+            if (window->RootWindow == g.HoveredWindow->RootWindow || IsWindowWithinBeginStackOf(g.HoveredWindow->RootWindow, window))
+                return;
+        if ((g.NextWindowData.RefreshFlagsVal & ImGuiWindowRefreshFlags_RefreshOnFocus) && g.NavWindow)
+            if (window->RootWindow == g.NavWindow->RootWindow || IsWindowWithinBeginStackOf(g.NavWindow->RootWindow, window))
+                return;
         window->DrawList = NULL;
         window->SkipRefresh = true;
     }
 }
 
+static void SetWindowActiveForSkipRefresh(ImGuiWindow* window)
+{
+    window->Active = true;
+    for (ImGuiWindow* child : window->DC.ChildWindows)
+        if (!child->Hidden)
+        {
+            child->Active = child->SkipRefresh = true;
+            SetWindowActiveForSkipRefresh(child);
+        }
+}
+
 // When a modal popup is open, newly created windows that want focus (i.e. are not popups and do not specify ImGuiWindowFlags_NoFocusOnAppearing)
 // should be positioned behind that modal window, unless the window was created inside the modal begin-stack.
 // In case of multiple stacked modals newly created window honors begin stack order and does not go below its own modal parent.
@@ -7269,9 +7375,10 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
         // At this point we don't have a clipping rectangle setup yet, so we can use the title bar area for hit detection and drawing
         if (!(flags & ImGuiWindowFlags_NoTitleBar) && !(flags & ImGuiWindowFlags_NoCollapse) && !window->DockIsActive)
         {
-            // We don't use a regular button+id to test for double-click on title bar (mostly due to legacy reason, could be fixed), so verify that we don't have items over the title bar.
+            // We don't use a regular button+id to test for double-click on title bar (mostly due to legacy reason, could be fixed),
+            // so verify that we don't have items over the title bar.
             ImRect title_bar_rect = window->TitleBarRect();
-            if (g.HoveredWindow == window && g.HoveredId == 0 && g.HoveredIdPreviousFrame == 0 && IsMouseHoveringRect(title_bar_rect.Min, title_bar_rect.Max))
+            if (g.HoveredWindow == window && g.HoveredId == 0 && g.HoveredIdPreviousFrame == 0 && g.ActiveId == 0 && IsMouseHoveringRect(title_bar_rect.Min, title_bar_rect.Max))
                 if (g.IO.MouseClickedCount[0] == 2 && GetKeyOwner(ImGuiKey_MouseLeft) == ImGuiKeyOwner_NoOwner)
                     window->WantCollapseToggle = true;
             if (window->WantCollapseToggle)
@@ -7550,10 +7657,14 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
         // Affected by window/frame border size. Used by:
         // - Begin() initial clip rect
         float top_border_size = (((flags & ImGuiWindowFlags_MenuBar) || !(flags & ImGuiWindowFlags_NoTitleBar)) ? style.FrameBorderSize : window->WindowBorderSize);
-        window->InnerClipRect.Min.x = ImFloor(0.5f + window->InnerRect.Min.x + window->WindowBorderSize);
-        window->InnerClipRect.Min.y = ImFloor(0.5f + window->InnerRect.Min.y + top_border_size);
-        window->InnerClipRect.Max.x = ImFloor(0.5f + window->InnerRect.Max.x - window->WindowBorderSize);
-        window->InnerClipRect.Max.y = ImFloor(0.5f + window->InnerRect.Max.y - window->WindowBorderSize);
+
+        // Try to match the fact that our border is drawn centered over the window rectangle, rather than inner.
+        // This is why we do a *0.5f here. We don't currently even technically support large values for WindowBorderSize,
+        // see e.g #7887 #7888, but may do after we move the window border to become an inner border (and then we can remove the 0.5f here).
+        window->InnerClipRect.Min.x = ImFloor(0.5f + window->InnerRect.Min.x + window->WindowBorderSize * 0.5f);
+        window->InnerClipRect.Min.y = ImFloor(0.5f + window->InnerRect.Min.y + top_border_size * 0.5f);
+        window->InnerClipRect.Max.x = ImFloor(window->InnerRect.Max.x - window->WindowBorderSize * 0.5f);
+        window->InnerClipRect.Max.y = ImFloor(window->InnerRect.Max.y - window->WindowBorderSize * 0.5f);
         window->InnerClipRect.ClipWithFull(host_rect);
 
         // Default item width. Make it proportional to window size if window manually resizes
@@ -7758,7 +7869,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
     {
         // Skip refresh always mark active
         if (window->SkipRefresh)
-            window->Active = true;
+            SetWindowActiveForSkipRefresh(window);
 
         // Append
         SetCurrentViewport(window, window->Viewport);
@@ -8134,22 +8245,31 @@ void ImGui::SetCurrentFont(ImFont* font)
     g.DrawListSharedData.FontScale = g.FontScale;
 }
 
+// Use ImDrawList::_SetTextureID(), making our shared g.FontStack[] authorative against window-local ImDrawList.
+// - Whereas ImDrawList::PushTextureID()/PopTextureID() is not to be used across Begin() calls.
+// - Note that we don't propagate current texture id when e.g. Begin()-ing into a new window, we never really did...
+//   - Some code paths never really fully worked with multiple atlas textures.
+//   - The right-ish solution may be to remove _SetTextureID() and make AddText/RenderText lazily call PushTextureID()/PopTextureID()
+//     the same way AddImage() does, but then all other primitives would also need to? I don't think we should tackle this problem
+//     because we have a concrete need and a test bed for multiple atlas textures.
 void ImGui::PushFont(ImFont* font)
 {
     ImGuiContext& g = *GImGui;
-    if (!font)
+    if (font == NULL)
         font = GetDefaultFont();
-    SetCurrentFont(font);
     g.FontStack.push_back(font);
-    g.CurrentWindow->DrawList->PushTextureID(font->ContainerAtlas->TexID);
+    SetCurrentFont(font);
+    g.CurrentWindow->DrawList->_SetTextureID(font->ContainerAtlas->TexID);
 }
 
 void  ImGui::PopFont()
 {
     ImGuiContext& g = *GImGui;
-    g.CurrentWindow->DrawList->PopTextureID();
+    IM_ASSERT(g.FontStack.Size > 0);
     g.FontStack.pop_back();
-    SetCurrentFont(g.FontStack.empty() ? GetDefaultFont() : g.FontStack.back());
+    ImFont* font = g.FontStack.Size == 0 ? GetDefaultFont() : g.FontStack.back();
+    SetCurrentFont(font);
+    g.CurrentWindow->DrawList->_SetTextureID(font->ContainerAtlas->TexID);
 }
 
 void ImGui::PushItemFlag(ImGuiItemFlags option, bool enabled)
@@ -8909,6 +9029,16 @@ ImGuiID ImGuiWindow::GetID(int n)
 }
 
 // This is only used in rare/specific situations to manufacture an ID out of nowhere.
+// FIXME: Consider instead storing last non-zero ID + count of successive zero-ID, and combine those?
+ImGuiID ImGuiWindow::GetIDFromPos(const ImVec2& p_abs)
+{
+    ImGuiID seed = IDStack.back();
+    ImVec2 p_rel = ImGui::WindowPosAbsToRel(this, p_abs);
+    ImGuiID id = ImHashData(&p_rel, sizeof(p_rel), seed);
+    return id;
+}
+
+// "
 ImGuiID ImGuiWindow::GetIDFromRectangle(const ImRect& r_abs)
 {
     ImGuiID seed = IDStack.back();
@@ -9021,7 +9151,7 @@ IM_MSVC_RUNTIME_CHECKS_RESTORE
 //-----------------------------------------------------------------------------
 // [SECTION] INPUTS
 //-----------------------------------------------------------------------------
-// - GetModForModKey() [Internal]
+// - GetModForLRModKey() [Internal]
 // - FixupKeyChord() [Internal]
 // - GetKeyData() [Internal]
 // - GetKeyIndex() [Internal]
@@ -9084,7 +9214,7 @@ IM_MSVC_RUNTIME_CHECKS_RESTORE
 // - Shortcut() [Internal]
 //-----------------------------------------------------------------------------
 
-static ImGuiKeyChord GetModForModKey(ImGuiKey key)
+static ImGuiKeyChord GetModForLRModKey(ImGuiKey key)
 {
     if (key == ImGuiKey_LeftCtrl || key == ImGuiKey_RightCtrl)
         return ImGuiMod_Ctrl;
@@ -9101,8 +9231,8 @@ ImGuiKeyChord ImGui::FixupKeyChord(ImGuiKeyChord key_chord)
 {
     // Add ImGuiMod_XXXX when a corresponding ImGuiKey_LeftXXX/ImGuiKey_RightXXX is specified.
     ImGuiKey key = (ImGuiKey)(key_chord & ~ImGuiMod_Mask_);
-    if (IsModKey(key))
-        key_chord |= GetModForModKey(key);
+    if (IsLRModKey(key))
+        key_chord |= GetModForLRModKey(key);
     return key_chord;
 }
 
@@ -9193,8 +9323,8 @@ const char* ImGui::GetKeyChordName(ImGuiKeyChord key_chord)
     ImGuiContext& g = *GImGui;
 
     const ImGuiKey key = (ImGuiKey)(key_chord & ~ImGuiMod_Mask_);
-    if (IsModKey(key))
-        key_chord &= ~GetModForModKey(key); // Return "Ctrl+LeftShift" instead of "Ctrl+Shift+LeftShift"
+    if (IsLRModKey(key))
+        key_chord &= ~GetModForLRModKey(key); // Return "Ctrl+LeftShift" instead of "Ctrl+Shift+LeftShift"
     ImFormatString(g.TempKeychordName, IM_ARRAYSIZE(g.TempKeychordName), "%s%s%s%s%s",
         (key_chord & ImGuiMod_Ctrl) ? "Ctrl+" : "",
         (key_chord & ImGuiMod_Shift) ? "Shift+" : "",
@@ -9394,8 +9524,9 @@ static int CalcRoutingScore(ImGuiID focus_scope_id, ImGuiID owner_id, ImGuiInput
     return 0;
 }
 
-// We need this to filter some Shortcut() routes when an item e.g. an InputText() is active
-// e.g. ImGuiKey_G won't be considered a shortcut when item is active, but ImGuiMod|ImGuiKey_G can be.
+// - We need this to filter some Shortcut() routes when an item e.g. an InputText() is active
+//   e.g. ImGuiKey_G won't be considered a shortcut when item is active, but ImGuiMod|ImGuiKey_G can be.
+// - This is also used by UpdateInputEvents() to avoid trickling in the most common case of e.g. pressing ImGuiKey_G also emitting a G character.
 static bool IsKeyChordPotentiallyCharInput(ImGuiKeyChord key_chord)
 {
     // Mimic 'ignore_char_inputs' logic in InputText()
@@ -9409,6 +9540,8 @@ static bool IsKeyChordPotentiallyCharInput(ImGuiKeyChord key_chord)
 
     // Return true for A-Z, 0-9 and other keys associated to char inputs. Other keys such as F1-F12 won't be filtered.
     ImGuiKey key = (ImGuiKey)(key_chord & ~ImGuiMod_Mask_);
+    if (key == ImGuiKey_None)
+        return false;
     return g.KeysMayBeCharInput.TestBit(key);
 }
 
@@ -9532,7 +9665,7 @@ bool ImGui::IsKeyPressed(ImGuiKey key, bool repeat)
     return IsKeyPressed(key, repeat ? ImGuiInputFlags_Repeat : ImGuiInputFlags_None, ImGuiKeyOwner_Any);
 }
 
-// Important: unless legacy IsKeyPressed(ImGuiKey, bool repeat=true) which DEFAULT to repeat, this requires EXPLICIT repeat.
+// Important: unlike legacy IsKeyPressed(ImGuiKey, bool repeat=true) which DEFAULT to repeat, this requires EXPLICIT repeat.
 bool ImGui::IsKeyPressed(ImGuiKey key, ImGuiInputFlags flags, ImGuiID owner_id)
 {
     const ImGuiKeyData* key_data = GetKeyData(key);
@@ -9784,6 +9917,9 @@ ImGuiMouseCursor ImGui::GetMouseCursor()
     return g.MouseCursor;
 }
 
+// We intentionally accept values of ImGuiMouseCursor that are outside our bounds, in case users needs to hack-in a custom cursor value.
+// Custom cursors may be handled by custom backends. If you are using a standard backend and want to hack in a custom cursor, you may
+// handle it before the backend _NewFrame() call and temporarily set ImGuiConfigFlags_NoMouseCursorChange during the backend _NewFrame() call.
 void ImGui::SetMouseCursor(ImGuiMouseCursor cursor_type)
 {
     ImGuiContext& g = *GImGui;
@@ -10219,9 +10355,9 @@ void ImGui::UpdateInputEvents(bool trickle_fast_inputs)
     // Only trickle chars<>key when working with InputText()
     // FIXME: InputText() could parse event trail?
     // FIXME: Could specialize chars<>keys trickling rules for control keys (those not typically associated to characters)
-    const bool trickle_interleaved_keys_and_text = (trickle_fast_inputs && g.WantTextInputNextFrame == 1);
+    const bool trickle_interleaved_nonchar_keys_and_text = (trickle_fast_inputs && g.WantTextInputNextFrame == 1);
 
-    bool mouse_moved = false, mouse_wheeled = false, key_changed = false, text_inputted = false;
+    bool mouse_moved = false, mouse_wheeled = false, key_changed = false, key_changed_nonchar = false, text_inputted = false;
     int  mouse_button_changed = 0x00;
     ImBitArray<ImGuiKey_KeysData_SIZE> key_changed_mask;
 
@@ -10277,12 +10413,19 @@ void ImGui::UpdateInputEvents(bool trickle_fast_inputs)
             IM_ASSERT(key != ImGuiKey_None);
             ImGuiKeyData* key_data = GetKeyData(key);
             const int key_data_index = (int)(key_data - g.IO.KeysData);
-            if (trickle_fast_inputs && key_data->Down != e->Key.Down && (key_changed_mask.TestBit(key_data_index) || text_inputted || mouse_button_changed != 0))
+            if (trickle_fast_inputs && key_data->Down != e->Key.Down && (key_changed_mask.TestBit(key_data_index) || mouse_button_changed != 0))
                 break;
+
+            const bool key_is_potentially_for_char_input = IsKeyChordPotentiallyCharInput(GetMergedModsFromKeys() | key);
+            if (trickle_interleaved_nonchar_keys_and_text && (text_inputted && !key_is_potentially_for_char_input))
+                break;
+
             key_data->Down = e->Key.Down;
             key_data->AnalogValue = e->Key.AnalogValue;
             key_changed = true;
             key_changed_mask.SetBit(key_data_index);
+            if (trickle_interleaved_nonchar_keys_and_text && !key_is_potentially_for_char_input)
+                key_changed_nonchar = true;
 
             // Allow legacy code using io.KeysDown[GetKeyIndex()] with new backends
 #ifndef IMGUI_DISABLE_OBSOLETE_KEYIO
@@ -10296,11 +10439,13 @@ void ImGui::UpdateInputEvents(bool trickle_fast_inputs)
             if (io.ConfigFlags & ImGuiConfigFlags_NoKeyboard)
                 continue;
             // Trickling Rule: Stop processing queued events if keys/mouse have been interacted with
-            if (trickle_fast_inputs && ((key_changed && trickle_interleaved_keys_and_text) || mouse_button_changed != 0 || mouse_moved || mouse_wheeled))
+            if (trickle_fast_inputs && (mouse_button_changed != 0 || mouse_moved || mouse_wheeled))
+                break;
+            if (trickle_interleaved_nonchar_keys_and_text && key_changed_nonchar)
                 break;
             unsigned int c = e->Text.Char;
             io.InputQueueCharacters.push_back(c <= IM_UNICODE_CODEPOINT_MAX ? (ImWchar)c : IM_UNICODE_CODEPOINT_INVALID);
-            if (trickle_interleaved_keys_and_text)
+            if (trickle_interleaved_nonchar_keys_and_text)
                 text_inputted = true;
         }
         else if (e->Type == ImGuiInputEventType_Focus)
@@ -10649,6 +10794,14 @@ static void ImGui::ErrorCheckNewFrameSanityChecks()
         IM_ASSERT(g.IO.KeyMap[ImGuiKey_Space] != -1 && "ImGuiKey_Space is not mapped, required for keyboard navigation.");
 #endif
 
+    // Remap legacy clipboard handlers (OBSOLETED in 1.91.1, August 2024)
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+    if (g.IO.GetClipboardTextFn != NULL && (g.PlatformIO.Platform_GetClipboardTextFn == NULL || g.PlatformIO.Platform_GetClipboardTextFn == Platform_GetClipboardTextFn_DefaultImpl))
+        g.PlatformIO.Platform_GetClipboardTextFn = [](ImGuiContext* ctx) { return ctx->IO.GetClipboardTextFn(ctx->IO.ClipboardUserData); };
+    if (g.IO.SetClipboardTextFn != NULL && (g.PlatformIO.Platform_SetClipboardTextFn == NULL || g.PlatformIO.Platform_SetClipboardTextFn == Platform_SetClipboardTextFn_DefaultImpl))
+        g.PlatformIO.Platform_SetClipboardTextFn = [](ImGuiContext* ctx, const char* text) { return ctx->IO.SetClipboardTextFn(ctx->IO.ClipboardUserData, text); };
+#endif
+
     // Perform simple check: error if Docking or Viewport are enabled _exactly_ on frame 1 (instead of frame 0 or later), which is a common error leading to loss of .ini data.
     if (g.FrameCount == 1 && (g.IO.ConfigFlags & ImGuiConfigFlags_DockingEnable) && (g.ConfigFlagsLastFrame & ImGuiConfigFlags_DockingEnable) == 0)
         IM_ASSERT(0 && "Please set DockingEnable before the first call to NewFrame()! Otherwise you will lose your .ini settings!");
@@ -11673,7 +11826,8 @@ bool ImGui::BeginTooltipEx(ImGuiTooltipFlags tooltip_flags, ImGuiWindowFlags ext
         // See FindBestWindowPosForPopup() for positionning logic of other tooltips (not drag and drop ones).
         //ImVec2 tooltip_pos = g.IO.MousePos - g.ActiveIdClickOffset - g.Style.WindowPadding;
         ImVec2 tooltip_pos = g.IO.MousePos + TOOLTIP_DEFAULT_OFFSET * g.Style.MouseCursorScale;
-        SetNextWindowPos(tooltip_pos);
+        if ((g.NextWindowData.Flags & ImGuiNextWindowDataFlags_HasPos) == 0)
+            SetNextWindowPos(tooltip_pos);
         SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
         //PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.60f); // This would be nice but e.g ColorButton with checkboard has issue with transparent colors :(
         tooltip_flags |= ImGuiTooltipFlags_OverridePrevious;
@@ -11945,6 +12099,9 @@ void ImGui::ClosePopupToLevel(int remaining, bool restore_focus_to_window_under_
     ImGuiContext& g = *GImGui;
     IMGUI_DEBUG_LOG_POPUP("[popup] ClosePopupToLevel(%d), restore_under=%d\n", remaining, restore_focus_to_window_under_popup);
     IM_ASSERT(remaining >= 0 && remaining < g.OpenPopupStack.Size);
+    if (g.DebugLogFlags & ImGuiDebugLogFlags_EventPopup)
+        for (int n = remaining; n < g.OpenPopupStack.Size; n++)
+            IMGUI_DEBUG_LOG_POPUP("[popup] - Closing PopupID 0x%08X Window \"%s\"\n", g.OpenPopupStack[n].PopupId, g.OpenPopupStack[n].Window ? g.OpenPopupStack[n].Window->Name : NULL);
 
     // Trim open popup stack
     ImGuiPopupData prev_popup = g.OpenPopupStack[remaining];
@@ -13754,9 +13911,11 @@ static void ImGui::NavUpdateWindowing()
 
     // Keyboard: Press and Release ALT to toggle menu layer
     const ImGuiKey windowing_toggle_keys[] = { ImGuiKey_LeftAlt, ImGuiKey_RightAlt };
+    bool windowing_toggle_layer_start = false;
     for (ImGuiKey windowing_toggle_key : windowing_toggle_keys)
         if (nav_keyboard_active && IsKeyPressed(windowing_toggle_key, 0, ImGuiKeyOwner_NoOwner))
         {
+            windowing_toggle_layer_start = true;
             g.NavWindowingToggleLayer = true;
             g.NavWindowingToggleKey = windowing_toggle_key;
             g.NavInputSource = ImGuiInputSource_Keyboard;
@@ -13770,7 +13929,9 @@ static void ImGui::NavUpdateWindowing()
         // We cancel toggling nav layer if an owner has claimed the key.
         if (io.InputQueueCharacters.Size > 0 || io.KeyCtrl || io.KeyShift || io.KeySuper)
             g.NavWindowingToggleLayer = false;
-        if (TestKeyOwner(g.NavWindowingToggleKey, ImGuiKeyOwner_NoOwner) == false || TestKeyOwner(ImGuiMod_Alt, ImGuiKeyOwner_NoOwner) == false)
+        else if (windowing_toggle_layer_start == false && g.LastKeyboardKeyPressTime == g.Time)
+            g.NavWindowingToggleLayer = false;
+        else if (TestKeyOwner(g.NavWindowingToggleKey, ImGuiKeyOwner_NoOwner) == false || TestKeyOwner(ImGuiMod_Alt, ImGuiKeyOwner_NoOwner) == false)
             g.NavWindowingToggleLayer = false;
 
         // Apply layer toggle on Alt release
@@ -15068,7 +15229,7 @@ static bool ImGui::UpdateTryMergeWindowIntoHostViewports(ImGuiWindow* window)
 
 // Translate Dear ImGui windows when a Host Viewport has been moved
 // (This additionally keeps windows at the same place when ImGuiConfigFlags_ViewportsEnable is toggled!)
-void ImGui::TranslateWindowsInViewport(ImGuiViewportP* viewport, const ImVec2& old_pos, const ImVec2& new_pos)
+void ImGui::TranslateWindowsInViewport(ImGuiViewportP* viewport, const ImVec2& old_pos, const ImVec2& new_pos, const ImVec2& old_size, const ImVec2& new_size)
 {
     ImGuiContext& g = *GImGui;
     IM_ASSERT(viewport->Window == NULL && (viewport->Flags & ImGuiViewportFlags_CanHostOtherWindows));
@@ -15082,7 +15243,7 @@ void ImGui::TranslateWindowsInViewport(ImGuiViewportP* viewport, const ImVec2& o
     ImRect test_still_fit_rect(old_pos, old_pos + viewport->Size);
     ImVec2 delta_pos = new_pos - old_pos;
     for (ImGuiWindow* window : g.Windows) // FIXME-OPT
-        if (translate_all_windows || (window->Viewport == viewport && test_still_fit_rect.Contains(window->Rect())))
+        if (translate_all_windows || (window->Viewport == viewport && (old_size == new_size || test_still_fit_rect.Contains(window->Rect()))))
             TranslateWindow(window, delta_pos);
 }
 
@@ -15238,10 +15399,18 @@ static void ImGui::UpdateViewportsNewFrame()
         // Update/copy monitor info
         UpdateViewportPlatformMonitor(viewport);
 
-        // Lock down space taken by menu bars and status bars, reset the offset for functions like BeginMainMenuBar() to alter them again.
-        viewport->WorkOffsetMin = viewport->BuildWorkOffsetMin;
-        viewport->WorkOffsetMax = viewport->BuildWorkOffsetMax;
-        viewport->BuildWorkOffsetMin = viewport->BuildWorkOffsetMax = ImVec2(0.0f, 0.0f);
+        // Lock down space taken by menu bars and status bars + query initial insets from backend
+        // Setup initial value for functions like BeginMainMenuBar(), DockSpaceOverViewport() etc.
+        viewport->WorkInsetMin = viewport->BuildWorkInsetMin;
+        viewport->WorkInsetMax = viewport->BuildWorkInsetMax;
+        viewport->BuildWorkInsetMin = viewport->BuildWorkInsetMax = ImVec2(0.0f, 0.0f);
+        if (g.PlatformIO.Platform_GetWindowWorkAreaInsets != NULL && platform_funcs_available)
+        {
+            ImVec4 insets = g.PlatformIO.Platform_GetWindowWorkAreaInsets(viewport);
+            IM_ASSERT(insets.x >= 0.0f && insets.y >= 0.0f && insets.z >= 0.0f && insets.w >= 0.0f);
+            viewport->BuildWorkInsetMin = ImVec2(insets.x, insets.y);
+            viewport->BuildWorkInsetMax = ImVec2(insets.z, insets.w);
+        }
         viewport->UpdateWorkRect();
 
         // Reset alpha every frame. Users of transparency (docking) needs to request a lower alpha back.
@@ -15251,7 +15420,7 @@ static void ImGui::UpdateViewportsNewFrame()
         // (This additionally keeps windows at the same place when ImGuiConfigFlags_ViewportsEnable is toggled!)
         const ImVec2 viewport_delta_pos = viewport->Pos - viewport->LastPos;
         if ((viewport->Flags & ImGuiViewportFlags_CanHostOtherWindows) && (viewport_delta_pos.x != 0.0f || viewport_delta_pos.y != 0.0f))
-            TranslateWindowsInViewport(viewport, viewport->LastPos, viewport->Pos);
+            TranslateWindowsInViewport(viewport, viewport->LastPos, viewport->Pos, viewport->LastSize, viewport->Size);
 
         // Update DPI scale
         float new_dpi_scale;
@@ -15361,6 +15530,7 @@ static void ImGui::UpdateViewportsEndFrame()
     {
         ImGuiViewportP* viewport = g.Viewports[i];
         viewport->LastPos = viewport->Pos;
+        viewport->LastSize = viewport->Size;
         if (viewport->LastFrameActive < g.FrameCount || viewport->Size.x <= 0.0f || viewport->Size.y <= 0.0f)
             if (i > 0) // Always include main viewport in the list
                 continue;
@@ -15407,7 +15577,7 @@ ImGuiViewportP* ImGui::AddUpdateViewport(ImGuiWindow* window, ImGuiID id, const
         viewport->ID = id;
         viewport->Idx = g.Viewports.Size;
         viewport->Pos = viewport->LastPos = pos;
-        viewport->Size = size;
+        viewport->Size = viewport->LastSize = size;
         viewport->Flags = flags;
         UpdateViewportPlatformMonitor(viewport);
         g.Viewports.push_back(viewport);
@@ -19890,9 +20060,9 @@ static void ImGui::DockSettingsHandler_WriteAll(ImGuiContext* ctx, ImGuiSettings
 
 // Win32 clipboard implementation
 // We use g.ClipboardHandlerData for temporary storage to ensure it is freed on Shutdown()
-static const char* GetClipboardTextFn_DefaultImpl(void* user_data_ctx)
+static const char* Platform_GetClipboardTextFn_DefaultImpl(ImGuiContext* ctx)
 {
-    ImGuiContext& g = *(ImGuiContext*)user_data_ctx;
+    ImGuiContext& g = *ctx;
     g.ClipboardHandlerData.clear();
     if (!::OpenClipboard(NULL))
         return NULL;
@@ -19913,7 +20083,7 @@ static const char* GetClipboardTextFn_DefaultImpl(void* user_data_ctx)
     return g.ClipboardHandlerData.Data;
 }
 
-static void SetClipboardTextFn_DefaultImpl(void*, const char* text)
+static void Platform_SetClipboardTextFn_DefaultImpl(ImGuiContext*, const char* text)
 {
     if (!::OpenClipboard(NULL))
         return;
@@ -19940,7 +20110,7 @@ static PasteboardRef main_clipboard = 0;
 
 // OSX clipboard implementation
 // If you enable this you will need to add '-framework ApplicationServices' to your linker command-line!
-static void SetClipboardTextFn_DefaultImpl(void*, const char* text)
+static void Platform_SetClipboardTextFn_DefaultImpl(ImGuiContext*, const char* text)
 {
     if (!main_clipboard)
         PasteboardCreate(kPasteboardClipboard, &main_clipboard);
@@ -19953,9 +20123,9 @@ static void SetClipboardTextFn_DefaultImpl(void*, const char* text)
     }
 }
 
-static const char* GetClipboardTextFn_DefaultImpl(void* user_data_ctx)
+static const char* Platform_GetClipboardTextFn_DefaultImpl(ImGuiContext* ctx)
 {
-    ImGuiContext& g = *(ImGuiContext*)user_data_ctx;
+    ImGuiContext& g = *ctx;
     if (!main_clipboard)
         PasteboardCreate(kPasteboardClipboard, &main_clipboard);
     PasteboardSynchronize(main_clipboard);
@@ -19989,15 +20159,15 @@ static const char* GetClipboardTextFn_DefaultImpl(void* user_data_ctx)
 #else
 
 // Local Dear ImGui-only clipboard implementation, if user hasn't defined better clipboard handlers.
-static const char* GetClipboardTextFn_DefaultImpl(void* user_data_ctx)
+static const char* Platform_GetClipboardTextFn_DefaultImpl(ImGuiContext* ctx)
 {
-    ImGuiContext& g = *(ImGuiContext*)user_data_ctx;
+    ImGuiContext& g = *ctx;
     return g.ClipboardHandlerData.empty() ? NULL : g.ClipboardHandlerData.begin();
 }
 
-static void SetClipboardTextFn_DefaultImpl(void* user_data_ctx, const char* text)
+static void Platform_SetClipboardTextFn_DefaultImpl(ImGuiContext* ctx, const char* text)
 {
-    ImGuiContext& g = *(ImGuiContext*)user_data_ctx;
+    ImGuiContext& g = *ctx;
     g.ClipboardHandlerData.clear();
     const char* text_end = text + strlen(text);
     g.ClipboardHandlerData.resize((int)(text_end - text) + 1);
@@ -20025,14 +20195,14 @@ static void SetClipboardTextFn_DefaultImpl(void* user_data_ctx, const char* text
 #ifdef _MSC_VER
 #pragma comment(lib, "shell32")
 #endif
-static bool PlatformOpenInShellFn_DefaultImpl(ImGuiContext*, const char* path)
+static bool Platform_OpenInShellFn_DefaultImpl(ImGuiContext*, const char* path)
 {
     return (INT_PTR)::ShellExecuteA(NULL, "open", path, NULL, NULL, SW_SHOWDEFAULT) > 32;
 }
 #else
 #include <sys/wait.h>
 #include <unistd.h>
-static bool PlatformOpenInShellFn_DefaultImpl(ImGuiContext*, const char* path)
+static bool Platform_OpenInShellFn_DefaultImpl(ImGuiContext*, const char* path)
 {
 #if defined(__APPLE__)
     const char* args[] { "open", "--", path, NULL };
@@ -20056,7 +20226,7 @@ static bool PlatformOpenInShellFn_DefaultImpl(ImGuiContext*, const char* path)
 }
 #endif
 #else
-static bool PlatformOpenInShellFn_DefaultImpl(ImGuiContext*, const char*) { return false; }
+static bool Platform_OpenInShellFn_DefaultImpl(ImGuiContext*, const char*) { return false; }
 #endif // Default shell handlers
 
 //-----------------------------------------------------------------------------
@@ -20069,7 +20239,7 @@ static bool PlatformOpenInShellFn_DefaultImpl(ImGuiContext*, const char*) { retu
 #pragma comment(lib, "imm32")
 #endif
 
-static void PlatformSetImeDataFn_DefaultImpl(ImGuiContext*, ImGuiViewport* viewport, ImGuiPlatformImeData* data)
+static void Platform_SetImeDataFn_DefaultImpl(ImGuiContext*, ImGuiViewport* viewport, ImGuiPlatformImeData* data)
 {
     // Notify OS Input Method Editor of text input position
     HWND hwnd = (HWND)viewport->PlatformHandleRaw;
@@ -20095,7 +20265,7 @@ static void PlatformSetImeDataFn_DefaultImpl(ImGuiContext*, ImGuiViewport* viewp
 
 #else
 
-static void PlatformSetImeDataFn_DefaultImpl(ImGuiContext*, ImGuiViewport*, ImGuiPlatformImeData*) {}
+static void Platform_SetImeDataFn_DefaultImpl(ImGuiContext*, ImGuiViewport*, ImGuiPlatformImeData*) {}
 
 #endif // Default IME handlers
 
@@ -20302,7 +20472,7 @@ void ImGui::UpdateDebugToolFlashStyleColor()
     ImGuiContext& g = *GImGui;
     if (g.DebugFlashStyleColorTime <= 0.0f)
         return;
-    ColorConvertHSVtoRGB(cosf(g.DebugFlashStyleColorTime * 6.0f) * 0.5f + 0.5f, 0.5f, 0.5f, g.Style.Colors[g.DebugFlashStyleColorIdx].x, g.Style.Colors[g.DebugFlashStyleColorIdx].y, g.Style.Colors[g.DebugFlashStyleColorIdx].z);
+    ColorConvertHSVtoRGB(ImCos(g.DebugFlashStyleColorTime * 6.0f) * 0.5f + 0.5f, 0.5f, 0.5f, g.Style.Colors[g.DebugFlashStyleColorIdx].x, g.Style.Colors[g.DebugFlashStyleColorIdx].y, g.Style.Colors[g.DebugFlashStyleColorIdx].z);
     g.Style.Colors[g.DebugFlashStyleColorIdx].w = 1.0f;
     if ((g.DebugFlashStyleColorTime -= g.IO.DeltaTime) <= 0.0f)
         DebugFlashStyleColorStop();
@@ -21484,9 +21654,9 @@ void ImGui::DebugNodeViewport(ImGuiViewportP* viewport)
     if (open)
     {
         ImGuiWindowFlags flags = viewport->Flags;
-        BulletText("Main Pos: (%.0f,%.0f), Size: (%.0f,%.0f)\nWorkArea Offset Left: %.0f Top: %.0f, Right: %.0f, Bottom: %.0f\nMonitor: %d, DpiScale: %.0f%%",
+        BulletText("Main Pos: (%.0f,%.0f), Size: (%.0f,%.0f)\nWorkArea Inset Left: %.0f Top: %.0f, Right: %.0f, Bottom: %.0f\nMonitor: %d, DpiScale: %.0f%%",
             viewport->Pos.x, viewport->Pos.y, viewport->Size.x, viewport->Size.y,
-            viewport->WorkOffsetMin.x, viewport->WorkOffsetMin.y, viewport->WorkOffsetMax.x, viewport->WorkOffsetMax.y,
+            viewport->WorkInsetMin.x, viewport->WorkInsetMin.y, viewport->WorkInsetMax.x, viewport->WorkInsetMax.y,
             viewport->PlatformMonitor, viewport->DpiScale * 100.0f);
         if (viewport->Idx > 0) { SameLine(); if (SmallButton("Reset Pos")) { viewport->Pos = ImVec2(200, 200); viewport->UpdateWorkRect(); if (viewport->Window) viewport->Window->Pos = viewport->Pos; } }
         BulletText("Flags: 0x%04X =%s%s%s%s%s%s%s%s%s%s%s%s%s", viewport->Flags,
@@ -21552,7 +21722,7 @@ void ImGui::DebugNodeWindow(ImGuiWindow* window, const char* label)
         (flags & ImGuiWindowFlags_NoMouseInputs)? "NoMouseInputs":"", (flags & ImGuiWindowFlags_NoNavInputs) ? "NoNavInputs" : "", (flags & ImGuiWindowFlags_AlwaysAutoResize) ? "AlwaysAutoResize" : "");
     if (flags & ImGuiWindowFlags_ChildWindow)
         BulletText("ChildFlags: 0x%08X (%s%s%s%s..)", window->ChildFlags,
-            (window->ChildFlags & ImGuiChildFlags_Border) ? "Border " : "",
+            (window->ChildFlags & ImGuiChildFlags_Borders) ? "Borders " : "",
             (window->ChildFlags & ImGuiChildFlags_ResizeX) ? "ResizeX " : "",
             (window->ChildFlags & ImGuiChildFlags_ResizeY) ? "ResizeY " : "",
             (window->ChildFlags & ImGuiChildFlags_NavFlattened) ? "NavFlattened " : "");
@@ -21695,7 +21865,7 @@ static void ShowDebugLogFlag(const char* name, ImGuiDebugLogFlags flags)
 void ImGui::ShowDebugLogWindow(bool* p_open)
 {
     ImGuiContext& g = *GImGui;
-    if (!(g.NextWindowData.Flags & ImGuiNextWindowDataFlags_HasSize))
+    if ((g.NextWindowData.Flags & ImGuiNextWindowDataFlags_HasSize) == 0)
         SetNextWindowSize(ImVec2(0.0f, GetFontSize() * 12.0f), ImGuiCond_FirstUseEver);
     if (!Begin("Dear ImGui Debug Log", p_open) || GetCurrentWindow()->BeginCount > 1)
     {
@@ -21742,7 +21912,7 @@ void ImGui::ShowDebugLogWindow(bool* p_open)
         EndPopup();
     }
 
-    BeginChild("##log", ImVec2(0.0f, 0.0f), ImGuiChildFlags_Border, ImGuiWindowFlags_AlwaysVerticalScrollbar | ImGuiWindowFlags_AlwaysHorizontalScrollbar);
+    BeginChild("##log", ImVec2(0.0f, 0.0f), ImGuiChildFlags_Borders, ImGuiWindowFlags_AlwaysVerticalScrollbar | ImGuiWindowFlags_AlwaysHorizontalScrollbar);
 
     const ImGuiDebugLogFlags backup_log_flags = g.DebugLogFlags;
     g.DebugLogFlags &= ~ImGuiDebugLogFlags_EventClipper;
@@ -22014,7 +22184,7 @@ static int StackToolFormatLevelInfo(ImGuiIDStackTool* tool, int n, bool format_f
 void ImGui::ShowIDStackToolWindow(bool* p_open)
 {
     ImGuiContext& g = *GImGui;
-    if (!(g.NextWindowData.Flags & ImGuiNextWindowDataFlags_HasSize))
+    if ((g.NextWindowData.Flags & ImGuiNextWindowDataFlags_HasSize) == 0)
         SetNextWindowSize(ImVec2(0.0f, GetFontSize() * 8.0f), ImGuiCond_FirstUseEver);
     if (!Begin("Dear ImGui ID Stack Tool", p_open) || GetCurrentWindow()->BeginCount > 1)
     {

imgui.h

@@ -1,16 +1,17 @@
-// dear imgui, v1.91.0
+// dear imgui, v1.91.2
 // (headers)
 
 // Help:
 // - See links below.
 // - Call and read ImGui::ShowDemoWindow() in imgui_demo.cpp. All applications in examples/ are doing that.
 // - Read top of imgui.cpp for more details, links and comments.
+// - Add '#define IMGUI_DEFINE_MATH_OPERATORS' before including this file (or in imconfig.h) to access courtesy maths operators for ImVec2 and ImVec4.
 
 // Resources:
 // - FAQ ........................ https://dearimgui.com/faq (in repository as docs/FAQ.md)
 // - Homepage ................... https://github.com/ocornut/imgui
 // - Releases & changelog ....... https://github.com/ocornut/imgui/releases
-// - Gallery .................... https://github.com/ocornut/imgui/issues/7503 (please post your screenshots/video there!)
+// - Gallery .................... https://github.com/ocornut/imgui/issues?q=label%3Agallery (please post your screenshots/video there!)
 // - Wiki ....................... https://github.com/ocornut/imgui/wiki (lots of good stuff there)
 //   - Getting Started            https://github.com/ocornut/imgui/wiki/Getting-Started (how to integrate in an existing app by adding ~25 lines of code)
 //   - Third-party Extensions     https://github.com/ocornut/imgui/wiki/Useful-Extensions (ImPlot & many more)
@@ -27,8 +28,8 @@
 
 // Library Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals, e.g. '#if IMGUI_VERSION_NUM >= 12345')
-#define IMGUI_VERSION       "1.91.0"
-#define IMGUI_VERSION_NUM   19100
+#define IMGUI_VERSION       "1.91.2"
+#define IMGUI_VERSION_NUM   19120
 #define IMGUI_HAS_TABLE
 #define IMGUI_HAS_VIEWPORT          // Viewport WIP branch
 #define IMGUI_HAS_DOCK              // Docking WIP branch
@@ -50,7 +51,7 @@ Index of this file:
 // [SECTION] Drawing API (ImDrawCallback, ImDrawCmd, ImDrawIdx, ImDrawVert, ImDrawChannel, ImDrawListSplitter, ImDrawFlags, ImDrawListFlags, ImDrawList, ImDrawData)
 // [SECTION] Font API (ImFontConfig, ImFontGlyph, ImFontGlyphRangesBuilder, ImFontAtlasFlags, ImFontAtlas, ImFont)
 // [SECTION] Viewports (ImGuiViewportFlags, ImGuiViewport)
-// [SECTION] Platform Dependent Interfaces (ImGuiPlatformIO, ImGuiPlatformMonitor, ImGuiPlatformImeData)
+// [SECTION] ImGuiPlatformIO + other Platform Dependent Interfaces (ImGuiPlatformMonitor, ImGuiPlatformImeData)
 // [SECTION] Obsolete functions and types
 
 */
@@ -173,16 +174,16 @@ struct ImFontGlyph;                 // A single font glyph (code point + coordin
 struct ImFontGlyphRangesBuilder;    // Helper to build glyph ranges from text/string data
 struct ImColor;                     // Helper functions to create a color that can be converted to either u32 or float4 (*OBSOLETE* please avoid using)
 struct ImGuiContext;                // Dear ImGui context (opaque structure, unless including imgui_internal.h)
-struct ImGuiIO;                     // Main configuration and I/O between your application and ImGui
+struct ImGuiIO;                     // Main configuration and I/O between your application and ImGui (also see: ImGuiPlatformIO)
 struct ImGuiInputTextCallbackData;  // Shared state of InputText() when using custom ImGuiInputTextCallback (rare/advanced use)
 struct ImGuiKeyData;                // Storage for ImGuiIO and IsKeyDown(), IsKeyPressed() etc functions.
 struct ImGuiListClipper;            // Helper to manually clip large list of items
 struct ImGuiMultiSelectIO;          // Structure to interact with a BeginMultiSelect()/EndMultiSelect() block
 struct ImGuiOnceUponAFrame;         // Helper for running a block of code not more than once a frame
 struct ImGuiPayload;                // User data payload for drag and drop operations
-struct ImGuiPlatformIO;             // Multi-viewport support: interface for Platform/Renderer backends + viewports to render
-struct ImGuiPlatformMonitor;        // Multi-viewport support: user-provided bounds for each connected monitor/display. Used when positioning popups and tooltips to avoid them straddling monitors
+struct ImGuiPlatformIO;             // Interface between platform/renderer backends and ImGui (e.g. Clipboard, IME, Multi-Viewport support). Extends ImGuiIO.
 struct ImGuiPlatformImeData;        // Platform IME data for io.PlatformSetImeDataFn() function.
+struct ImGuiPlatformMonitor;        // Multi-viewport support: user-provided bounds for each connected monitor/display. Used when positioning popups and tooltips to avoid them straddling monitors
 struct ImGuiSelectionBasicStorage;  // Optional helper to store multi-selection state + apply multi-selection requests.
 struct ImGuiSelectionExternalStorage;//Optional helper to apply multi-selection requests to existing randomly accessible storage.
 struct ImGuiSelectionRequest;       // A selection request (stored in ImGuiMultiSelectIO)
@@ -286,8 +287,8 @@ typedef void*   (*ImGuiMemAllocFunc)(size_t sz, void* user_data);
 typedef void    (*ImGuiMemFreeFunc)(void* ptr, void* user_data);                // Function signature for ImGui::SetAllocatorFunctions()
 
 // ImVec2: 2D vector used to store positions, sizes etc. [Compile-time configurable type]
-// This is a frequently used type in the API. Consider using IM_VEC2_CLASS_EXTRA to create implicit cast from/to our preferred type.
-// Add '#define IMGUI_DEFINE_MATH_OPERATORS' in your imconfig.h file to benefit from courtesy maths operators for those types.
+// - This is a frequently used type in the API. Consider using IM_VEC2_CLASS_EXTRA to create implicit cast from/to our preferred type.
+// - Add '#define IMGUI_DEFINE_MATH_OPERATORS' before including this file (or in imconfig.h) to access courtesy maths operators for ImVec2 and ImVec4.
 IM_MSVC_RUNTIME_CHECKS_OFF
 struct ImVec2
 {
@@ -330,7 +331,8 @@ namespace ImGui
     IMGUI_API void          SetCurrentContext(ImGuiContext* ctx);
 
     // Main
-    IMGUI_API ImGuiIO&      GetIO();                                    // access the IO structure (mouse/keyboard/gamepad inputs, time, various configuration options/flags)
+    IMGUI_API ImGuiIO&      GetIO();                                    // access the ImGuiIO structure (mouse/keyboard/gamepad inputs, time, various configuration options/flags)
+    IMGUI_API ImGuiPlatformIO& GetPlatformIO();                         // access the ImGuiPlatformIO structure (mostly hooks/functions to connect to platform/renderer and OS Clipboard, IME etc.)
     IMGUI_API ImGuiStyle&   GetStyle();                                 // access the Style structure (colors, sizes). Always use PushStyleColor(), PushStyleVar() to modify style mid-frame!
     IMGUI_API void          NewFrame();                                 // start a new Dear ImGui frame, you can submit any command from this point until Render()/EndFrame().
     IMGUI_API void          EndFrame();                                 // ends the Dear ImGui frame. automatically called by Render(). If you don't need to render data (skipping rendering) you may call EndFrame() without Render()... but you'll have wasted CPU already! If you don't need to render, better to not create any windows and not call NewFrame() at all!
@@ -372,10 +374,10 @@ namespace ImGui
     // Child Windows
     // - Use child windows to begin into a self-contained independent scrolling/clipping regions within a host window. Child windows can embed their own child.
     // - Before 1.90 (November 2023), the "ImGuiChildFlags child_flags = 0" parameter was "bool border = false".
-    //   This API is backward compatible with old code, as we guarantee that ImGuiChildFlags_Border == true.
+    //   This API is backward compatible with old code, as we guarantee that ImGuiChildFlags_Borders == true.
     //   Consider updating your old code:
     //      BeginChild("Name", size, false)   -> Begin("Name", size, 0); or Begin("Name", size, ImGuiChildFlags_None);
-    //      BeginChild("Name", size, true)    -> Begin("Name", size, ImGuiChildFlags_Border);
+    //      BeginChild("Name", size, true)    -> Begin("Name", size, ImGuiChildFlags_Borders);
     // - Manual sizing (each axis can use a different setting e.g. ImVec2(0.0f, 400.0f)):
     //     == 0.0f: use remaining parent window size for this axis.
     //      > 0.0f: use specified size for this axis.
@@ -446,8 +448,10 @@ namespace ImGui
     IMGUI_API void          PushStyleColor(ImGuiCol idx, ImU32 col);                        // modify a style color. always use this if you modify the style after NewFrame().
     IMGUI_API void          PushStyleColor(ImGuiCol idx, const ImVec4& col);
     IMGUI_API void          PopStyleColor(int count = 1);
-    IMGUI_API void          PushStyleVar(ImGuiStyleVar idx, float val);                     // modify a style float variable. always use this if you modify the style after NewFrame().
-    IMGUI_API void          PushStyleVar(ImGuiStyleVar idx, const ImVec2& val);             // modify a style ImVec2 variable. always use this if you modify the style after NewFrame().
+    IMGUI_API void          PushStyleVar(ImGuiStyleVar idx, float val);                     // modify a style float variable. always use this if you modify the style after NewFrame()!
+    IMGUI_API void          PushStyleVar(ImGuiStyleVar idx, const ImVec2& val);             // modify a style ImVec2 variable. "
+    IMGUI_API void          PushStyleVarX(ImGuiStyleVar idx, float val_x);                  // modify X component of a style ImVec2 variable. "
+    IMGUI_API void          PushStyleVarY(ImGuiStyleVar idx, float val_y);                  // modify Y component of a style ImVec2 variable. "
     IMGUI_API void          PopStyleVar(int count = 1);
     IMGUI_API void          PushItemFlag(ImGuiItemFlags option, bool enabled);              // modify specified shared item flag, e.g. PushItemFlag(ImGuiItemFlags_NoTabStop, true)
     IMGUI_API void          PopItemFlag();
@@ -464,7 +468,7 @@ namespace ImGui
     // - Use the ShowStyleEditor() function to interactively see/edit the colors.
     IMGUI_API ImFont*       GetFont();                                                      // get current font
     IMGUI_API float         GetFontSize();                                                  // get current font size (= height in pixels) of current font with current scale applied
-    IMGUI_API ImVec2        GetFontTexUvWhitePixel();                                       // get UV coordinate for a while pixel, useful to draw custom shapes via the ImDrawList API
+    IMGUI_API ImVec2        GetFontTexUvWhitePixel();                                       // get UV coordinate for a white pixel, useful to draw custom shapes via the ImDrawList API
     IMGUI_API ImU32         GetColorU32(ImGuiCol idx, float alpha_mul = 1.0f);              // retrieve given style color with style alpha applied and optional extra alpha multiplier, packed as a 32-bit value suitable for ImDrawList
     IMGUI_API ImU32         GetColorU32(const ImVec4& col);                                 // retrieve given color with style alpha applied, packed as a 32-bit value suitable for ImDrawList
     IMGUI_API ImU32         GetColorU32(ImU32 col, float alpha_mul = 1.0f);                 // retrieve given color with style alpha applied, packed as a 32-bit value suitable for ImDrawList
@@ -847,7 +851,7 @@ namespace ImGui
 
     // Legacy Columns API (prefer using Tables!)
     // - You can also use SameLine(pos_x) to mimic simplified columns.
-    IMGUI_API void          Columns(int count = 1, const char* id = NULL, bool border = true);
+    IMGUI_API void          Columns(int count = 1, const char* id = NULL, bool borders = true);
     IMGUI_API void          NextColumn();                                                       // next column, defaults to current row or next row if the current row is finished
     IMGUI_API int           GetColumnIndex();                                                   // get current column index
     IMGUI_API float         GetColumnWidth(int column_index = -1);                              // get column width (in pixels). pass -1 to use current column
@@ -1076,7 +1080,6 @@ namespace ImGui
     // (Optional) Platform/OS interface for multi-viewport support
     // Read comments around the ImGuiPlatformIO structure for more details.
     // Note: You may use GetWindowViewport() to get the current viewport of the current window.
-    IMGUI_API ImGuiPlatformIO&  GetPlatformIO();                                                // platform/renderer functions, for backend to setup + viewports list.
     IMGUI_API void              UpdatePlatformWindows();                                        // call in main loop. will call CreateWindow/ResizeWindow/etc. platform functions for each secondary viewport, and DestroyWindow for each inactive viewport.
     IMGUI_API void              RenderPlatformWindowsDefault(void* platform_render_arg = NULL, void* renderer_render_arg = NULL); // call in main loop. will call RenderWindow/SwapBuffers platform functions for each secondary viewport which doesn't have the ImGuiViewportFlags_Minimized flag set. May be reimplemented by user for custom rendering needs.
     IMGUI_API void              DestroyPlatformWindows();                                       // call DestroyWindow platform functions for all viewports. call from backend Shutdown() if you need to close platform windows before imgui shutdown. otherwise will be called by DestroyContext().
@@ -1134,7 +1137,7 @@ enum ImGuiWindowFlags_
 };
 
 // Flags for ImGui::BeginChild()
-// (Legacy: bit 0 must always correspond to ImGuiChildFlags_Border to be backward compatible with old API using 'bool border = false'.
+// (Legacy: bit 0 must always correspond to ImGuiChildFlags_Borders to be backward compatible with old API using 'bool border = false'.
 // About using AutoResizeX/AutoResizeY flags:
 // - May be combined with SetNextWindowSizeConstraints() to set a min/max size for each axis (see "Demo->Child->Auto-resize with Constraints").
 // - Size measurement for a given axis is only performed when the child window is within visible boundaries, or is just appearing.
@@ -1145,7 +1148,7 @@ enum ImGuiWindowFlags_
 enum ImGuiChildFlags_
 {
     ImGuiChildFlags_None                    = 0,
-    ImGuiChildFlags_Border                  = 1 << 0,   // Show an outer border and enable WindowPadding. (IMPORTANT: this is always == 1 == true for legacy reason)
+    ImGuiChildFlags_Borders                 = 1 << 0,   // Show an outer border and enable WindowPadding. (IMPORTANT: this is always == 1 == true for legacy reason)
     ImGuiChildFlags_AlwaysUseWindowPadding  = 1 << 1,   // Pad with style.WindowPadding even if no border are drawn (no padding by default for non-bordered child windows because it makes more sense)
     ImGuiChildFlags_ResizeX                 = 1 << 2,   // Allow resize from right border (layout direction). Enable .ini saving (unless ImGuiWindowFlags_NoSavedSettings passed to window flags)
     ImGuiChildFlags_ResizeY                 = 1 << 3,   // Allow resize from bottom border (layout direction). "
@@ -1154,6 +1157,11 @@ enum ImGuiChildFlags_
     ImGuiChildFlags_AlwaysAutoResize        = 1 << 6,   // Combined with AutoResizeX/AutoResizeY. Always measure size even when child is hidden, always return true, always disable clipping optimization! NOT RECOMMENDED.
     ImGuiChildFlags_FrameStyle              = 1 << 7,   // Style the child window like a framed item: use FrameBg, FrameRounding, FrameBorderSize, FramePadding instead of ChildBg, ChildRounding, ChildBorderSize, WindowPadding.
     ImGuiChildFlags_NavFlattened            = 1 << 8,   // [BETA] Share focus scope, allow gamepad/keyboard navigation to cross over parent border to this child or between sibling child windows.
+
+    // Obsolete names
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+    ImGuiChildFlags_Border                  = ImGuiChildFlags_Borders,  // Renamed in 1.91.1 (August 2024) for consistency.
+#endif
 };
 
 // Flags for ImGui::PushItemFlag()
@@ -1166,6 +1174,7 @@ enum ImGuiItemFlags_
     ImGuiItemFlags_NoNavDefaultFocus        = 1 << 2,   // false    // Disable item being a candidate for default focus (e.g. used by title bar items).
     ImGuiItemFlags_ButtonRepeat             = 1 << 3,   // false    // Any button-like behavior will have repeat mode enabled (based on io.KeyRepeatDelay and io.KeyRepeatRate values). Note that you can also call IsItemActive() after any button to tell if it is being held.
     ImGuiItemFlags_AutoClosePopups          = 1 << 4,   // true     // MenuItem()/Selectable() automatically close their parent popup window.
+    ImGuiItemFlags_AllowDuplicateId         = 1 << 5,   // false    // Allow submitting an item with the same identifier as an item already submitted this frame without triggering a warning tooltip if io.ConfigDebugHighlightIdConflicts is set.
 };
 
 // Flags for ImGui::InputText()
@@ -1218,8 +1227,8 @@ enum ImGuiTreeNodeFlags_
     ImGuiTreeNodeFlags_NoTreePushOnOpen     = 1 << 3,   // Don't do a TreePush() when open (e.g. for CollapsingHeader) = no extra indent nor pushing on ID stack
     ImGuiTreeNodeFlags_NoAutoOpenOnLog      = 1 << 4,   // Don't automatically and temporarily open node when Logging is active (by default logging will automatically open tree nodes)
     ImGuiTreeNodeFlags_DefaultOpen          = 1 << 5,   // Default node to be open
-    ImGuiTreeNodeFlags_OpenOnDoubleClick    = 1 << 6,   // Need double-click to open node
-    ImGuiTreeNodeFlags_OpenOnArrow          = 1 << 7,   // Only open when clicking on the arrow part. If ImGuiTreeNodeFlags_OpenOnDoubleClick is also set, single-click arrow or double-click all box to open.
+    ImGuiTreeNodeFlags_OpenOnDoubleClick    = 1 << 6,   // Open on double-click instead of simple click (default for multi-select unless any _OpenOnXXX behavior is set explicitly). Both behaviors may be combined.
+    ImGuiTreeNodeFlags_OpenOnArrow          = 1 << 7,   // Open when clicking on the arrow part (default for multi-select unless any _OpenOnXXX behavior is set explicitly). Both behaviors may be combined.
     ImGuiTreeNodeFlags_Leaf                 = 1 << 8,   // No collapsing, no arrow (use as a convenience for leaf nodes).
     ImGuiTreeNodeFlags_Bullet               = 1 << 9,   // Display a bullet instead of arrow. IMPORTANT: node can still be marked open/close if you don't set the _Leaf flag!
     ImGuiTreeNodeFlags_FramePadding         = 1 << 10,  // Use FramePadding (even for an unframed text node) to vertically align text baseline to regular widget height. Equivalent to calling AlignTextToFramePadding() before the node.
@@ -2017,7 +2026,7 @@ enum ImGuiTableColumnFlags_
     ImGuiTableColumnFlags_NoSort                = 1 << 9,   // Disable ability to sort on this field (even if ImGuiTableFlags_Sortable is set on the table).
     ImGuiTableColumnFlags_NoSortAscending       = 1 << 10,  // Disable ability to sort in the ascending direction.
     ImGuiTableColumnFlags_NoSortDescending      = 1 << 11,  // Disable ability to sort in the descending direction.
-    ImGuiTableColumnFlags_NoHeaderLabel         = 1 << 12,  // TableHeadersRow() will not submit horizontal label for this column. Convenient for some small columns. Name will still appear in context menu or in angled headers.
+    ImGuiTableColumnFlags_NoHeaderLabel         = 1 << 12,  // TableHeadersRow() will submit an empty label for this column. Convenient for some small columns. Name will still appear in context menu or in angled headers. You may append into this cell by calling TableSetColumnIndex() right after the TableHeadersRow() call.
     ImGuiTableColumnFlags_NoHeaderWidth         = 1 << 13,  // Disable header text width contribution to automatic column width.
     ImGuiTableColumnFlags_PreferSortAscending   = 1 << 14,  // Make the initial sort direction Ascending when first sorting on this column (default).
     ImGuiTableColumnFlags_PreferSortDescending  = 1 << 15,  // Make the initial sort direction Descending when first sorting on this column.
@@ -2273,6 +2282,8 @@ struct ImGuiStyle
 // - initialization: backends and user code writes to ImGuiIO.
 // - main loop: backends writes to ImGuiIO, user code and imgui code reads from ImGuiIO.
 //-----------------------------------------------------------------------------
+// Also see ImGui::GetPlatformIO() and ImGuiPlatformIO struct for OS/platform related functions: clipboard, IME etc.
+//-----------------------------------------------------------------------------
 
 // [Internal] Storage used by IsKeyDown(), IsKeyPressed() etc functions.
 // If prior to 1.87 you used io.KeysDownDuration[] (which was marked as internal), you should use GetKeyData(key)->DownDuration and *NOT* io.KeysData[key]->DownDuration.
@@ -2299,6 +2310,7 @@ struct ImGuiIO
     const char* LogFilename;                    // = "imgui_log.txt"// Path to .log file (default parameter to ImGui::LogToFile when no file is specified).
     void*       UserData;                       // = NULL           // Store your own data.
 
+    // Font system
     ImFontAtlas*Fonts;                          // <auto>           // Font atlas: load, rasterize and pack one or more fonts into a single texture.
     float       FontGlobalScale;                // = 1.0f           // Global scale all fonts
     bool        FontAllowUserScaling;           // = false          // Allow user scaling text of individual window with CTRL+Wheel.
@@ -2318,6 +2330,7 @@ struct ImGuiIO
     bool        ConfigViewportsNoDefaultParent; // = false          // Disable default OS parenting to main viewport for secondary viewports. By default, viewports are marked with ParentViewportId = <main_viewport>, expecting the platform backend to setup a parent/child relationship between the OS windows (some backend may ignore this). Set to true if you want the default to be 0, then all viewports will be top-level OS windows.
 
     // Miscellaneous options
+    // (you can visualize and interact with all options in 'Demo->Configuration')
     bool        MouseDrawCursor;                // = false          // Request ImGui to draw a mouse cursor for you (if you are on a platform without a mouse cursor). Cannot be easily renamed to 'io.ConfigXXX' because this is frequently used by backend implementations.
     bool        ConfigMacOSXBehaviors;          // = defined(__APPLE__) // Swap Cmd<>Ctrl keys + OS X style text editing cursor movement using Alt instead of Ctrl, Shortcuts using Cmd/Super instead of Ctrl, Line/Text Start and End using Cmd+Arrows instead of Home/End, Double click selects by word instead of selecting whole text, Multi-selection in lists uses Cmd/Super instead of Ctrl.
     bool        ConfigNavSwapGamepadButtons;    // = false          // Swap Activate<>Cancel (A<>B) buttons, matching typical "Nintendo/Japanese style" gamepad layout.
@@ -2347,6 +2360,12 @@ struct ImGuiIO
     //   e.g. io.ConfigDebugIsDebuggerPresent = ::IsDebuggerPresent() on Win32, or refer to ImOsIsDebuggerPresent() imgui_test_engine/imgui_te_utils.cpp for a Unix compatible version).
     bool        ConfigDebugIsDebuggerPresent;   // = false          // Enable various tools calling IM_DEBUG_BREAK().
 
+    // Tools to detect code submitting items with conflicting/duplicate IDs
+    // - Code should use PushID()/PopID() in loops, or append "##xx" to same-label identifiers.
+    // - Empty label e.g. Button("") == same ID as parent widget/node. Use Button("##xx") instead!
+    // - See FAQ https://github.com/ocornut/imgui/blob/master/docs/FAQ.md#q-about-the-id-stack-system
+    bool        ConfigDebugHighlightIdConflicts;// = true           // Highlight and show an error message when multiple items have conflicting identifiers.
+
     // Tools to test correct Begin/End and BeginChild/EndChild behaviors.
     // - Presently Begin()/End() and BeginChild()/EndChild() needs to ALWAYS be called in tandem, regardless of return value of BeginXXX()
     // - This is inconsistent with other BeginXXX functions and create confusion for many users.
@@ -2374,25 +2393,6 @@ struct ImGuiIO
     void*       BackendRendererUserData;        // = NULL           // User data for renderer backend
     void*       BackendLanguageUserData;        // = NULL           // User data for non C++ programming language backend
 
-    // Optional: Access OS clipboard
-    // (default to use native Win32 clipboard on Windows, otherwise uses a private clipboard. Override to access OS clipboard on other architectures)
-    const char* (*GetClipboardTextFn)(void* user_data);
-    void        (*SetClipboardTextFn)(void* user_data, const char* text);
-    void*       ClipboardUserData;
-
-    // Optional: Open link/folder/file in OS Shell
-    // (default to use ShellExecuteA() on Windows, system() on Linux/Mac)
-    bool        (*PlatformOpenInShellFn)(ImGuiContext* ctx, const char* path);
-    void*       PlatformOpenInShellUserData;
-
-    // Optional: Notify OS Input Method Editor of the screen position of your cursor for text input position (e.g. when using Japanese/Chinese IME on Windows)
-    // (default to use native imm32 api on Windows)
-    void        (*PlatformSetImeDataFn)(ImGuiContext* ctx, ImGuiViewport* viewport, ImGuiPlatformImeData* data);
-    //void      (*SetPlatformImeDataFn)(ImGuiViewport* viewport, ImGuiPlatformImeData* data); // [Renamed to io.PlatformSetImeDataFn in 1.91.0]
-
-    // Optional: Platform locale
-    ImWchar     PlatformLocaleDecimalPoint;     // '.'              // [Experimental] Configure decimal point e.g. '.' or ',' useful for some languages (e.g. German), generally pulled from *localeconv()->decimal_point
-
     //------------------------------------------------------------------
     // Input - Call before calling NewFrame()
     //------------------------------------------------------------------
@@ -2497,6 +2497,14 @@ struct ImGuiIO
     //void*     ImeWindowHandle;                    // [Obsoleted in 1.87] Set ImGuiViewport::PlatformHandleRaw instead. Set this to your HWND to get automatic IME cursor positioning.
 #endif
 
+    // Legacy: before 1.91.1, clipboard functions were stored in ImGuiIO instead of ImGuiPlatformIO.
+    // As this is will affect all users of custom engines/backends, we are providing proper legacy redirection (will obsolete).
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+    const char* (*GetClipboardTextFn)(void* user_data);
+    void        (*SetClipboardTextFn)(void* user_data, const char* text);
+    void*       ClipboardUserData;
+#endif
+
     IMGUI_API   ImGuiIO();
 };
 
@@ -2781,7 +2789,7 @@ struct ImGuiListClipper
 // Helpers: ImVec2/ImVec4 operators
 // - It is important that we are keeping those disabled by default so they don't leak in user space.
 // - This is in order to allow user enabling implicit cast operators between ImVec2/ImVec4 and their own types (using IM_VEC2_CLASS_EXTRA in imconfig.h)
-// - You can use '#define IMGUI_DEFINE_MATH_OPERATORS' to import our operators, provided as a courtesy.
+// - Add '#define IMGUI_DEFINE_MATH_OPERATORS' before including this file (or in imconfig.h) to access courtesy maths operators for ImVec2 and ImVec4.
 #ifdef IMGUI_DEFINE_MATH_OPERATORS
 #define IMGUI_DEFINE_MATH_OPERATORS_IMPLEMENTED
 IM_MSVC_RUNTIME_CHECKS_OFF
@@ -2976,7 +2984,7 @@ struct ImGuiSelectionBasicStorage
     ImGuiStorage    _Storage;       // [Internal] Selection set. Think of this as similar to e.g. std::set<ImGuiID>. Prefer not accessing directly: iterate with GetNextSelectedItem().
 
     // Methods
-    ImGuiSelectionBasicStorage();
+    IMGUI_API ImGuiSelectionBasicStorage();
     IMGUI_API void  ApplyRequests(ImGuiMultiSelectIO* ms_io);   // Apply selection requests coming from BeginMultiSelect() and EndMultiSelect() functions. It uses 'items_count' passed to BeginMultiSelect()
     IMGUI_API bool  Contains(ImGuiID id) const;                 // Query if an item id is in selection.
     IMGUI_API void  Clear();                                    // Clear selection
@@ -3268,6 +3276,7 @@ struct ImDrawList
     IMGUI_API void  _OnChangedClipRect();
     IMGUI_API void  _OnChangedTextureID();
     IMGUI_API void  _OnChangedVtxOffset();
+    IMGUI_API void  _SetTextureID(ImTextureID texture_id);
     IMGUI_API int   _CalcCircleAutoSegmentCount(float radius) const;
     IMGUI_API void  _PathArcToFastEx(const ImVec2& center, float radius, int a_min_sample, int a_max_sample, int a_step);
     IMGUI_API void  _PathArcToN(const ImVec2& center, float radius, float a_min, float a_max, int num_segments);
@@ -3502,7 +3511,7 @@ struct ImFontAtlas
 struct ImFont
 {
     // Members: Hot ~20/24 bytes (for CalcTextSize)
-    ImVector<float>             IndexAdvanceX;      // 12-16 // out //            // Sparse. Glyphs->AdvanceX in a directly indexable way (cache-friendly for CalcTextSize functions which only this this info, and are often bottleneck in large UI).
+    ImVector<float>             IndexAdvanceX;      // 12-16 // out //            // Sparse. Glyphs->AdvanceX in a directly indexable way (cache-friendly for CalcTextSize functions which only this info, and are often bottleneck in large UI).
     float                       FallbackAdvanceX;   // 4     // out // = FallbackGlyph->AdvanceX
     float                       FontSize;           // 4     // in  //            // Height of characters/line, set during loading (don't change after loading)
 
@@ -3562,7 +3571,7 @@ enum ImGuiViewportFlags_
     ImGuiViewportFlags_None                     = 0,
     ImGuiViewportFlags_IsPlatformWindow         = 1 << 0,   // Represent a Platform Window
     ImGuiViewportFlags_IsPlatformMonitor        = 1 << 1,   // Represent a Platform Monitor (unused yet)
-    ImGuiViewportFlags_OwnedByApp               = 1 << 2,   // Platform Window: Was created/managed by the user application? (rather than our backend)
+    ImGuiViewportFlags_OwnedByApp               = 1 << 2,   // Platform Window: Is created/managed by the user application? (rather than our backend)
     ImGuiViewportFlags_NoDecoration             = 1 << 3,   // Platform Window: Disable platform decorations: title bar, borders, etc. (generally set all windows, but if ImGuiConfigFlags_ViewportsDecoration is set we only set this on popups/tooltips)
     ImGuiViewportFlags_NoTaskBarIcon            = 1 << 4,   // Platform Window: Disable platform task bar icon (generally set on popups/tooltips, or all windows if ImGuiConfigFlags_ViewportsNoTaskBarIcon is set)
     ImGuiViewportFlags_NoFocusOnAppearing       = 1 << 5,   // Platform Window: Don't take focus when created.
@@ -3620,17 +3629,18 @@ struct ImGuiViewport
 };
 
 //-----------------------------------------------------------------------------
-// [SECTION] Platform Dependent Interfaces (for e.g. multi-viewport support)
+// [SECTION] ImGuiPlatformIO + other Platform Dependent Interfaces (ImGuiPlatformMonitor, ImGuiPlatformImeData)
 //-----------------------------------------------------------------------------
-// [BETA] (Optional) This is completely optional, for advanced users!
+
+// [BETA] (Optional) Multi-Viewport Support!
 // If you are new to Dear ImGui and trying to integrate it into your engine, you can probably ignore this for now.
 //
 // This feature allows you to seamlessly drag Dear ImGui windows outside of your application viewport.
 // This is achieved by creating new Platform/OS windows on the fly, and rendering into them.
 // Dear ImGui manages the viewport structures, and the backend create and maintain one Platform/OS window for each of those viewports.
 //
+// See Recap:   https://github.com/ocornut/imgui/wiki/Multi-Viewports
 // See Glossary https://github.com/ocornut/imgui/wiki/Glossary for details about some of the terminology.
-// See Thread https://github.com/ocornut/imgui/issues/1542 for gifs, news and questions about this evolving feature.
 //
 // About the coordinates system:
 // - When multi-viewports are enabled, all Dear ImGui coordinates become absolute coordinates (same as OS coordinates!)
@@ -3668,14 +3678,40 @@ struct ImGuiViewport
 //   or you may decide to never setup those pointers and call your code directly. They are a convenience, not an obligatory interface.
 //-----------------------------------------------------------------------------
 
-// (Optional) Access via ImGui::GetPlatformIO()
+// Access via ImGui::GetPlatformIO()
 struct ImGuiPlatformIO
 {
+    IMGUI_API ImGuiPlatformIO();
+
     //------------------------------------------------------------------
-    // Input - Backend interface/functions + Monitor List
+    // Input - Interface with OS/backends (basic)
+    //------------------------------------------------------------------
+
+    // Optional: Access OS clipboard
+    // (default to use native Win32 clipboard on Windows, otherwise uses a private clipboard. Override to access OS clipboard on other architectures)
+    const char* (*Platform_GetClipboardTextFn)(ImGuiContext* ctx);
+    void        (*Platform_SetClipboardTextFn)(ImGuiContext* ctx, const char* text);
+    void*       Platform_ClipboardUserData;
+
+    // Optional: Open link/folder/file in OS Shell
+    // (default to use ShellExecuteA() on Windows, system() on Linux/Mac)
+    bool        (*Platform_OpenInShellFn)(ImGuiContext* ctx, const char* path);
+    void*       Platform_OpenInShellUserData;
+
+    // Optional: Notify OS Input Method Editor of the screen position of your cursor for text input position (e.g. when using Japanese/Chinese IME on Windows)
+    // (default to use native imm32 api on Windows)
+    void        (*Platform_SetImeDataFn)(ImGuiContext* ctx, ImGuiViewport* viewport, ImGuiPlatformImeData* data);
+    void*       Platform_ImeUserData;
+    //void      (*SetPlatformImeDataFn)(ImGuiViewport* viewport, ImGuiPlatformImeData* data); // [Renamed to platform_io.PlatformSetImeDataFn in 1.91.1]
+
+    // Optional: Platform locale
+    // [Experimental] Configure decimal point e.g. '.' or ',' useful for some languages (e.g. German), generally pulled from *localeconv()->decimal_point
+    ImWchar     Platform_LocaleDecimalPoint;     // '.'
+
+    //------------------------------------------------------------------
+    // Input - Interface with OS/backends (Multi-Viewport support!)
     //------------------------------------------------------------------
 
-    // (Optional) Platform functions (e.g. Win32, GLFW, SDL2)
     // For reference, the second column shows which function are generally calling the Platform Functions:
     //   N = ImGui::NewFrame()                        ~ beginning of the dear imgui frame: read info from platform/OS windows (latest size/position)
     //   F = ImGui::Begin(), ImGui::EndFrame()        ~ during the dear imgui frame
@@ -3683,12 +3719,12 @@ struct ImGuiPlatformIO
     //   R = ImGui::RenderPlatformWindowsDefault()    ~ render
     //   D = ImGui::DestroyPlatformWindows()          ~ shutdown
     // The general idea is that NewFrame() we will read the current Platform/OS state, and UpdatePlatformWindows() will write to it.
-    //
-    // The functions are designed so we can mix and match 2 imgui_impl_xxxx files, one for the Platform (~window/input handling), one for Renderer.
-    // Custom engine backends will often provide both Platform and Renderer interfaces and so may not need to use all functions.
-    // Platform functions are typically called before their Renderer counterpart, apart from Destroy which are called the other way.
 
-    // Platform function --------------------------------------------------- Called by -----
+    // The handlers are designed so we can mix and match two imgui_impl_xxxx files, one Platform backend and one Renderer backend.
+    // Custom engine backends will often provide both Platform and Renderer interfaces together and so may not need to use all functions.
+    // Platform functions are typically called _before_ their Renderer counterpart, apart from Destroy which are called the other way.
+
+    // Platform Backend functions (e.g. Win32, GLFW, SDL) ------------------- Called by -----
     void    (*Platform_CreateWindow)(ImGuiViewport* vp);                    // . . U . .  // Create a new platform window for the given viewport
     void    (*Platform_DestroyWindow)(ImGuiViewport* vp);                   // N . U . D  //
     void    (*Platform_ShowWindow)(ImGuiViewport* vp);                      // . . U . .  // Newly created windows are initially hidden so SetWindowPos/Size/Title can be called on them before showing the window
@@ -3706,9 +3742,10 @@ struct ImGuiPlatformIO
     void    (*Platform_SwapBuffers)(ImGuiViewport* vp, void* render_arg);   // . . . R .  // (Optional) Call Present/SwapBuffers (platform side! This is often unused!). 'render_arg' is the value passed to RenderPlatformWindowsDefault().
     float   (*Platform_GetWindowDpiScale)(ImGuiViewport* vp);               // N . . . .  // (Optional) [BETA] FIXME-DPI: DPI handling: Return DPI scale for this viewport. 1.0f = 96 DPI.
     void    (*Platform_OnChangedViewport)(ImGuiViewport* vp);               // . F . . .  // (Optional) [BETA] FIXME-DPI: DPI handling: Called during Begin() every time the viewport we are outputting into changes, so backend has a chance to swap fonts to adjust style.
+    ImVec4  (*Platform_GetWindowWorkAreaInsets)(ImGuiViewport* vp);         // N . . . .  // (Optional) [BETA] Get initial work area inset for the viewport (won't be covered by main menu bar, dockspace over viewport etc.). Default to (0,0),(0,0). 'safeAreaInsets' in iOS land, 'DisplayCutout' in Android land.
     int     (*Platform_CreateVkSurface)(ImGuiViewport* vp, ImU64 vk_inst, const void* vk_allocators, ImU64* out_vk_surface); // (Optional) For a Vulkan Renderer to call into Platform code (since the surface creation needs to tie them both).
 
-    // (Optional) Renderer functions (e.g. DirectX, OpenGL, Vulkan)
+    // Renderer Backend functions (e.g. DirectX, OpenGL, Vulkan) ------------ Called by -----
     void    (*Renderer_CreateWindow)(ImGuiViewport* vp);                    // . . U . .  // Create swap chain, frame buffers etc. (called after Platform_CreateWindow)
     void    (*Renderer_DestroyWindow)(ImGuiViewport* vp);                   // N . U . D  // Destroy swap chain, frame buffers etc. (called before Platform_DestroyWindow)
     void    (*Renderer_SetWindowSize)(ImGuiViewport* vp, ImVec2 size);      // . . U . .  // Resize swap chain, frame buffers etc. (called after Platform_SetWindowSize)
@@ -3727,7 +3764,6 @@ struct ImGuiPlatformIO
     // Viewports list (the list is updated by calling ImGui::EndFrame or ImGui::Render)
     // (in the future we will attempt to organize this feature to remove the need for a "main viewport")
     ImVector<ImGuiViewport*>        Viewports;                              // Main viewports, followed by all secondary viewports.
-    ImGuiPlatformIO()               { memset(this, 0, sizeof(*this)); }     // Zero clear
 };
 
 // (Optional) This is required when enabling multi-viewport. Represent the bounds of each connected monitor/display and their DPI.
@@ -3741,7 +3777,7 @@ struct ImGuiPlatformMonitor
     ImGuiPlatformMonitor()          { MainPos = MainSize = WorkPos = WorkSize = ImVec2(0, 0); DpiScale = 1.0f; PlatformHandle = NULL; }
 };
 
-// (Optional) Support for IME (Input Method Editor) via the io.PlatformSetImeDataFn() function.
+// (Optional) Support for IME (Input Method Editor) via the platform_io.Platform_SetImeDataFn() function.
 struct ImGuiPlatformImeData
 {
     bool    WantVisible;        // A widget wants the IME to be visible
@@ -3771,8 +3807,8 @@ namespace ImGui
     // OBSOLETED in 1.90.0 (from September 2023)
     static inline bool  BeginChildFrame(ImGuiID id, const ImVec2& size, ImGuiWindowFlags window_flags = 0)  { return BeginChild(id, size, ImGuiChildFlags_FrameStyle, window_flags); }
     static inline void  EndChildFrame()                                                                     { EndChild(); }
-    //static inline bool BeginChild(const char* str_id, const ImVec2& size_arg, bool border, ImGuiWindowFlags window_flags){ return BeginChild(str_id, size_arg, border ? ImGuiChildFlags_Border : ImGuiChildFlags_None, window_flags); } // Unnecessary as true == ImGuiChildFlags_Border
-    //static inline bool BeginChild(ImGuiID id, const ImVec2& size_arg, bool border, ImGuiWindowFlags window_flags)        { return BeginChild(id, size_arg, border ? ImGuiChildFlags_Border : ImGuiChildFlags_None, window_flags);     } // Unnecessary as true == ImGuiChildFlags_Border
+    //static inline bool BeginChild(const char* str_id, const ImVec2& size_arg, bool borders, ImGuiWindowFlags window_flags){ return BeginChild(str_id, size_arg, borders ? ImGuiChildFlags_Borders : ImGuiChildFlags_None, window_flags); } // Unnecessary as true == ImGuiChildFlags_Borders
+    //static inline bool BeginChild(ImGuiID id, const ImVec2& size_arg, bool borders, ImGuiWindowFlags window_flags)        { return BeginChild(id, size_arg, borders ? ImGuiChildFlags_Borders : ImGuiChildFlags_None, window_flags);     } // Unnecessary as true == ImGuiChildFlags_Borders
     static inline void  ShowStackToolWindow(bool* p_open = NULL)                { ShowIDStackToolWindow(p_open); }
     IMGUI_API bool      Combo(const char* label, int* current_item, bool (*old_callback)(void* user_data, int idx, const char** out_text), void* user_data, int items_count, int popup_max_height_in_items = -1);
     IMGUI_API bool      ListBox(const char* label, int* current_item, bool (*old_callback)(void* user_data, int idx, const char** out_text), void* user_data, int items_count, int height_in_items = -1);
@@ -3781,13 +3817,13 @@ namespace ImGui
     // OBSOLETED in 1.89.4 (from March 2023)
     static inline void  PushAllowKeyboardFocus(bool tab_stop)                   { PushItemFlag(ImGuiItemFlags_NoTabStop, !tab_stop); }
     static inline void  PopAllowKeyboardFocus()                                 { PopItemFlag(); }
-    // OBSOLETED in 1.89 (from August 2022)
-    IMGUI_API bool      ImageButton(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0 = ImVec2(0, 0), const ImVec2& uv1 = ImVec2(1, 1), int frame_padding = -1, const ImVec4& bg_col = ImVec4(0, 0, 0, 0), const ImVec4& tint_col = ImVec4(1, 1, 1, 1)); // Use new ImageButton() signature (explicit item id, regular FramePadding)
     // OBSOLETED in 1.87 (from February 2022 but more formally obsoleted April 2024)
     IMGUI_API ImGuiKey  GetKeyIndex(ImGuiKey key);                              // Map ImGuiKey_* values into legacy native key index. == io.KeyMap[key]. When using a 1.87+ backend using io.AddKeyEvent(), calling GetKeyIndex() with ANY ImGuiKey_XXXX values will return the same value!
     //static inline ImGuiKey GetKeyIndex(ImGuiKey key)                          { IM_ASSERT(key >= ImGuiKey_NamedKey_BEGIN && key < ImGuiKey_NamedKey_END); return key; }
 
     // Some of the older obsolete names along with their replacement (commented out so they are not reported in IDE)
+    //-- OBSOLETED in 1.89 (from August 2022)
+    //IMGUI_API bool      ImageButton(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0 = ImVec2(0, 0), const ImVec2& uv1 = ImVec2(1, 1), int frame_padding = -1, const ImVec4& bg_col = ImVec4(0, 0, 0, 0), const ImVec4& tint_col = ImVec4(1, 1, 1, 1)); // --> Use new ImageButton() signature (explicit item id, regular FramePadding). Refer to code in 1.91 if you want to grab a copy of this version.
     //-- OBSOLETED in 1.88 (from May 2022)
     //static inline void  CaptureKeyboardFromApp(bool want_capture_keyboard = true)     { SetNextFrameWantCaptureKeyboard(want_capture_keyboard); } // Renamed as name was misleading + removed default value.
     //static inline void  CaptureMouseFromApp(bool want_capture_mouse = true)           { SetNextFrameWantCaptureMouse(want_capture_mouse); }       // Renamed as name was misleading + removed default value.

imgui_demo.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.91.0
+// dear imgui, v1.91.2
 // (demo code)
 
 // Help:
@@ -117,6 +117,9 @@ Index of this file:
 #if !defined(_MSC_VER) || _MSC_VER >= 1800
 #include <inttypes.h>       // PRId64/PRIu64, not avail in some MinGW headers.
 #endif
+#ifdef __EMSCRIPTEN__
+#include <emscripten/version.h>     // __EMSCRIPTEN_major__ etc.
+#endif
 
 // Visual Studio warnings
 #ifdef _MSC_VER
@@ -322,23 +325,24 @@ static ExampleTreeNode* ExampleTree_CreateNode(const char* name, int uid, Exampl
 static ExampleTreeNode* ExampleTree_CreateDemoTree()
 {
     static const char* root_names[] = { "Apple", "Banana", "Cherry", "Kiwi", "Mango", "Orange", "Pear", "Pineapple", "Strawberry", "Watermelon" };
-    char name_buf[32];
+    const size_t NAME_MAX_LEN = sizeof(ExampleTreeNode::Name);
+    char name_buf[NAME_MAX_LEN];
     int uid = 0;
     ExampleTreeNode* node_L0 = ExampleTree_CreateNode("<ROOT>", ++uid, NULL);
     const int root_items_multiplier = 2;
     for (int idx_L0 = 0; idx_L0 < IM_ARRAYSIZE(root_names) * root_items_multiplier; idx_L0++)
     {
-        snprintf(name_buf, 32, "%s %d", root_names[idx_L0 / root_items_multiplier], idx_L0 % root_items_multiplier);
+        snprintf(name_buf, IM_ARRAYSIZE(name_buf), "%s %d", root_names[idx_L0 / root_items_multiplier], idx_L0 % root_items_multiplier);
         ExampleTreeNode* node_L1 = ExampleTree_CreateNode(name_buf, ++uid, node_L0);
         const int number_of_childs = (int)strlen(node_L1->Name);
         for (int idx_L1 = 0; idx_L1 < number_of_childs; idx_L1++)
         {
-            snprintf(name_buf, 32, "Child %d", idx_L1);
+            snprintf(name_buf, IM_ARRAYSIZE(name_buf), "Child %d", idx_L1);
             ExampleTreeNode* node_L2 = ExampleTree_CreateNode(name_buf, ++uid, node_L1);
             node_L2->HasData = true;
             if (idx_L1 == 0)
             {
-                snprintf(name_buf, 32, "Sub-child %d", 0);
+                snprintf(name_buf, IM_ARRAYSIZE(name_buf), "Sub-child %d", 0);
                 ExampleTreeNode* node_L3 = ExampleTree_CreateNode(name_buf, ++uid, node_L2);
                 node_L3->HasData = true;
             }
@@ -596,8 +600,10 @@ void ImGui::ShowDemoWindow(bool* p_open)
             ImGui::SeparatorText("Debug");
             ImGui::Checkbox("io.ConfigDebugIsDebuggerPresent", &io.ConfigDebugIsDebuggerPresent);
             ImGui::SameLine(); HelpMarker("Enable various tools calling IM_DEBUG_BREAK().\n\nRequires a debugger being attached, otherwise IM_DEBUG_BREAK() options will appear to crash your application.");
+            ImGui::Checkbox("io.ConfigDebugHighlightIdConflicts", &io.ConfigDebugHighlightIdConflicts);
+            ImGui::SameLine(); HelpMarker("Highlight and show an error message when multiple items have conflicting identifiers.");
             ImGui::BeginDisabled();
-            ImGui::Checkbox("io.ConfigDebugBeginReturnValueOnce", &io.ConfigDebugBeginReturnValueOnce); // .
+            ImGui::Checkbox("io.ConfigDebugBeginReturnValueOnce", &io.ConfigDebugBeginReturnValueOnce);
             ImGui::EndDisabled();
             ImGui::SameLine(); HelpMarker("First calls to Begin()/BeginChild() will return false.\n\nTHIS OPTION IS DISABLED because it needs to be set at application boot-time to make sense. Showing the disabled option is a way to make this feature easier to discover.");
             ImGui::Checkbox("io.ConfigDebugBeginReturnValueLoop", &io.ConfigDebugBeginReturnValueLoop);
@@ -740,6 +746,7 @@ static void ShowDemoWindowMenuBar(ImGuiDemoWindowData* demo_data)
         if (ImGui::BeginMenu("Tools"))
         {
             IMGUI_DEMO_MARKER("Menu/Tools");
+            ImGuiIO& io = ImGui::GetIO();
 #ifndef IMGUI_DISABLE_DEBUG_TOOLS
             const bool has_debug_tools = true;
 #else
@@ -748,14 +755,16 @@ static void ShowDemoWindowMenuBar(ImGuiDemoWindowData* demo_data)
             ImGui::MenuItem("Metrics/Debugger", NULL, &demo_data->ShowMetrics, has_debug_tools);
             ImGui::MenuItem("Debug Log", NULL, &demo_data->ShowDebugLog, has_debug_tools);
             ImGui::MenuItem("ID Stack Tool", NULL, &demo_data->ShowIDStackTool, has_debug_tools);
-            ImGui::MenuItem("Style Editor", NULL, &demo_data->ShowStyleEditor);
-            bool is_debugger_present = ImGui::GetIO().ConfigDebugIsDebuggerPresent;
+            bool is_debugger_present = io.ConfigDebugIsDebuggerPresent;
             if (ImGui::MenuItem("Item Picker", NULL, false, has_debug_tools && is_debugger_present))
                 ImGui::DebugStartItemPicker();
             if (!is_debugger_present)
                 ImGui::SetItemTooltip("Requires io.ConfigDebugIsDebuggerPresent=true to be set.\n\nWe otherwise disable the menu option to avoid casual users crashing the application.\n\nYou can however always access the Item Picker in Metrics->Tools.");
-            ImGui::Separator();
+            ImGui::MenuItem("Style Editor", NULL, &demo_data->ShowStyleEditor);
             ImGui::MenuItem("About Dear ImGui", NULL, &demo_data->ShowAbout);
+
+            ImGui::SeparatorText("Debug Options");
+            ImGui::MenuItem("Highlight ID Conflicts", NULL, &io.ConfigDebugHighlightIdConflicts, has_debug_tools);
             ImGui::EndMenu();
         }
         ImGui::EndMenuBar();
@@ -2056,8 +2065,12 @@ static void ShowDemoWindowWidgets(ImGuiDemoWindowData* demo_data)
         ImGui::SameLine();
         ImGui::SliderInt("Sample count", &display_count, 1, 400);
         float (*func)(void*, int) = (func_type == 0) ? Funcs::Sin : Funcs::Saw;
-        ImGui::PlotLines("Lines", func, NULL, display_count, 0, NULL, -1.0f, 1.0f, ImVec2(0, 80));
-        ImGui::PlotHistogram("Histogram", func, NULL, display_count, 0, NULL, -1.0f, 1.0f, ImVec2(0, 80));
+        ImGui::PlotLines("Lines##2", func, NULL, display_count, 0, NULL, -1.0f, 1.0f, ImVec2(0, 80));
+        ImGui::PlotHistogram("Histogram##2", func, NULL, display_count, 0, NULL, -1.0f, 1.0f, ImVec2(0, 80));
+        ImGui::Separator();
+
+        ImGui::Text("Need better plotting and graphing? Consider using ImPlot:");
+        ImGui::TextLinkOpenURL("https://github.com/epezent/implot");
         ImGui::Separator();
 
         ImGui::TreePop();
@@ -2648,6 +2661,11 @@ static void ShowDemoWindowWidgets(ImGuiDemoWindowData* demo_data)
         IMGUI_DEMO_MARKER("Widgets/Drag and Drop/Drag to reorder items (simple)");
         if (ImGui::TreeNode("Drag to reorder items (simple)"))
         {
+            // FIXME: there is temporary (usually single-frame) ID Conflict during reordering as a same item may be submitting twice.
+            // This code was always slightly faulty but in a way which was not easily noticeable.
+            // Until we fix this, enable ImGuiItemFlags_AllowDuplicateId to disable detecting the issue.
+            ImGui::PushItemFlag(ImGuiItemFlags_AllowDuplicateId, true);
+
             // Simple reordering
             HelpMarker(
                 "We don't use the drag and drop api at all here! "
@@ -2669,6 +2687,8 @@ static void ShowDemoWindowWidgets(ImGuiDemoWindowData* demo_data)
                     }
                 }
             }
+
+            ImGui::PopItemFlag();
             ImGui::TreePop();
         }
 
@@ -2821,7 +2841,7 @@ static void ShowDemoWindowWidgets(ImGuiDemoWindowData* demo_data)
         static bool embed_all_inside_a_child_window = false;
         ImGui::Checkbox("Embed everything inside a child window for testing _RootWindow flag.", &embed_all_inside_a_child_window);
         if (embed_all_inside_a_child_window)
-            ImGui::BeginChild("outer_child", ImVec2(0, ImGui::GetFontSize() * 20.0f), ImGuiChildFlags_Border);
+            ImGui::BeginChild("outer_child", ImVec2(0, ImGui::GetFontSize() * 20.0f), ImGuiChildFlags_Borders);
 
         // Testing IsWindowFocused() function with its various flags.
         ImGui::BulletText(
@@ -2881,7 +2901,7 @@ static void ShowDemoWindowWidgets(ImGuiDemoWindowData* demo_data)
             ImGui::IsWindowHovered(ImGuiHoveredFlags_AnyWindow),
             ImGui::IsWindowHovered(ImGuiHoveredFlags_Stationary));
 
-        ImGui::BeginChild("child", ImVec2(0, 50), ImGuiChildFlags_Border);
+        ImGui::BeginChild("child", ImVec2(0, 50), ImGuiChildFlags_Borders);
         ImGui::Text("This is another child window for testing the _ChildWindows flag.");
         ImGui::EndChild();
         if (embed_all_inside_a_child_window)
@@ -3449,7 +3469,7 @@ static void ShowDemoWindowMultiSelect(ImGuiDemoWindowData* demo_data)
             ImGui::CheckboxFlags("ImGuiMultiSelectFlags_NoAutoClear", &flags, ImGuiMultiSelectFlags_NoAutoClear);
             ImGui::CheckboxFlags("ImGuiMultiSelectFlags_BoxSelect2d", &flags, ImGuiMultiSelectFlags_BoxSelect2d); // Cannot use ImGuiMultiSelectFlags_BoxSelect1d as checkboxes are varying width.
 
-            if (ImGui::BeginChild("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20), ImGuiChildFlags_Border | ImGuiChildFlags_ResizeY))
+            if (ImGui::BeginChild("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20), ImGuiChildFlags_Borders | ImGuiChildFlags_ResizeY))
             {
                 ImGuiMultiSelectIO* ms_io = ImGui::BeginMultiSelect(flags, -1, IM_ARRAYSIZE(items));
                 ImGuiSelectionExternalStorage storage_wrapper;
@@ -3751,7 +3771,7 @@ static void ShowDemoWindowMultiSelect(ImGuiDemoWindowData* demo_data)
             {
                 ImVec2 color_button_sz(ImGui::GetFontSize(), ImGui::GetFontSize());
                 if (widget_type == WidgetType_TreeNode)
-                    ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(ImGui::GetStyle().ItemSpacing.x, 0.0f));
+                    ImGui::PushStyleVarY(ImGuiStyleVar_ItemSpacing, 0.0f);
 
                 ImGuiMultiSelectIO* ms_io = ImGui::BeginMultiSelect(flags, selection.Size, items.Size);
                 selection.ApplyRequests(ms_io);
@@ -3767,7 +3787,7 @@ static void ShowDemoWindowMultiSelect(ImGuiDemoWindowData* demo_data)
                     ImGui::BeginTable("##Split", 2, ImGuiTableFlags_Resizable | ImGuiTableFlags_NoSavedSettings | ImGuiTableFlags_NoPadOuterX);
                     ImGui::TableSetupColumn("", ImGuiTableColumnFlags_WidthStretch, 0.70f);
                     ImGui::TableSetupColumn("", ImGuiTableColumnFlags_WidthStretch, 0.30f);
-                    //ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(ImGui::GetStyle().ItemSpacing.x, 0.0f));
+                    //ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacingY, 0.0f);
                 }
 
                 ImGuiListClipper clipper;
@@ -3955,7 +3975,7 @@ static void ShowDemoWindowLayout()
             if (!disable_menu)
                 window_flags |= ImGuiWindowFlags_MenuBar;
             ImGui::PushStyleVar(ImGuiStyleVar_ChildRounding, 5.0f);
-            ImGui::BeginChild("ChildR", ImVec2(0, 260), ImGuiChildFlags_Border, window_flags);
+            ImGui::BeginChild("ChildR", ImVec2(0, 260), ImGuiChildFlags_Borders, window_flags);
             if (!disable_menu && ImGui::BeginMenuBar())
             {
                 if (ImGui::BeginMenu("Menu"))
@@ -3985,7 +4005,7 @@ static void ShowDemoWindowLayout()
         {
             HelpMarker("Drag bottom border to resize. Double-click bottom border to auto-fit to vertical contents.");
             ImGui::PushStyleColor(ImGuiCol_ChildBg, ImGui::GetStyleColorVec4(ImGuiCol_FrameBg));
-            if (ImGui::BeginChild("ResizableChild", ImVec2(-FLT_MIN, ImGui::GetTextLineHeightWithSpacing() * 8), ImGuiChildFlags_Border | ImGuiChildFlags_ResizeY))
+            if (ImGui::BeginChild("ResizableChild", ImVec2(-FLT_MIN, ImGui::GetTextLineHeightWithSpacing() * 8), ImGuiChildFlags_Borders | ImGuiChildFlags_ResizeY))
                 for (int n = 0; n < 10; n++)
                     ImGui::Text("Line %04d", n);
             ImGui::PopStyleColor();
@@ -4003,7 +4023,7 @@ static void ShowDemoWindowLayout()
             ImGui::DragInt("Max Height (in Lines)", &max_height_in_lines, 0.2f);
 
             ImGui::SetNextWindowSizeConstraints(ImVec2(0.0f, ImGui::GetTextLineHeightWithSpacing() * 1), ImVec2(FLT_MAX, ImGui::GetTextLineHeightWithSpacing() * max_height_in_lines));
-            if (ImGui::BeginChild("ConstrainedChild", ImVec2(-FLT_MIN, 0.0f), ImGuiChildFlags_Border | ImGuiChildFlags_AutoResizeY))
+            if (ImGui::BeginChild("ConstrainedChild", ImVec2(-FLT_MIN, 0.0f), ImGuiChildFlags_Borders | ImGuiChildFlags_AutoResizeY))
                 for (int n = 0; n < draw_lines; n++)
                     ImGui::Text("Line %04d", n);
             ImGui::EndChild();
@@ -4021,11 +4041,11 @@ static void ShowDemoWindowLayout()
         {
             static int offset_x = 0;
             static bool override_bg_color = true;
-            static ImGuiChildFlags child_flags = ImGuiChildFlags_Border | ImGuiChildFlags_ResizeX | ImGuiChildFlags_ResizeY;
+            static ImGuiChildFlags child_flags = ImGuiChildFlags_Borders | ImGuiChildFlags_ResizeX | ImGuiChildFlags_ResizeY;
             ImGui::SetNextItemWidth(ImGui::GetFontSize() * 8);
             ImGui::DragInt("Offset X", &offset_x, 1.0f, -1000, 1000);
             ImGui::Checkbox("Override ChildBg color", &override_bg_color);
-            ImGui::CheckboxFlags("ImGuiChildFlags_Border", &child_flags, ImGuiChildFlags_Border);
+            ImGui::CheckboxFlags("ImGuiChildFlags_Borders", &child_flags, ImGuiChildFlags_Borders);
             ImGui::CheckboxFlags("ImGuiChildFlags_AlwaysUseWindowPadding", &child_flags, ImGuiChildFlags_AlwaysUseWindowPadding);
             ImGui::CheckboxFlags("ImGuiChildFlags_ResizeX", &child_flags, ImGuiChildFlags_ResizeX);
             ImGui::CheckboxFlags("ImGuiChildFlags_ResizeY", &child_flags, ImGuiChildFlags_ResizeY);
@@ -4292,7 +4312,7 @@ static void ShowDemoWindowLayout()
             // down by FramePadding.y ahead of time)
             ImGui::AlignTextToFramePadding();
             ImGui::Text("OK Blahblah"); ImGui::SameLine();
-            ImGui::Button("Some framed item"); ImGui::SameLine();
+            ImGui::Button("Some framed item##2"); ImGui::SameLine();
             HelpMarker("We call AlignTextToFramePadding() to vertically align the text baseline by +FramePadding.y");
 
             // SmallButton() uses the same vertical padding as Text
@@ -4435,7 +4455,7 @@ static void ShowDemoWindowLayout()
 
             const ImGuiWindowFlags child_flags = enable_extra_decorations ? ImGuiWindowFlags_MenuBar : 0;
             const ImGuiID child_id = ImGui::GetID((void*)(intptr_t)i);
-            const bool child_is_visible = ImGui::BeginChild(child_id, ImVec2(child_w, 200.0f), ImGuiChildFlags_Border, child_flags);
+            const bool child_is_visible = ImGui::BeginChild(child_id, ImVec2(child_w, 200.0f), ImGuiChildFlags_Borders, child_flags);
             if (ImGui::BeginMenuBar())
             {
                 ImGui::TextUnformatted("abc");
@@ -4482,7 +4502,7 @@ static void ShowDemoWindowLayout()
             float child_height = ImGui::GetTextLineHeight() + style.ScrollbarSize + style.WindowPadding.y * 2.0f;
             ImGuiWindowFlags child_flags = ImGuiWindowFlags_HorizontalScrollbar | (enable_extra_decorations ? ImGuiWindowFlags_AlwaysVerticalScrollbar : 0);
             ImGuiID child_id = ImGui::GetID((void*)(intptr_t)i);
-            bool child_is_visible = ImGui::BeginChild(child_id, ImVec2(-100, child_height), ImGuiChildFlags_Border, child_flags);
+            bool child_is_visible = ImGui::BeginChild(child_id, ImVec2(-100, child_height), ImGuiChildFlags_Borders, child_flags);
             if (scroll_to_off)
                 ImGui::SetScrollX(scroll_to_off_px);
             if (scroll_to_pos)
@@ -4524,7 +4544,7 @@ static void ShowDemoWindowLayout()
         ImGui::PushStyleVar(ImGuiStyleVar_FrameRounding, 3.0f);
         ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(2.0f, 1.0f));
         ImVec2 scrolling_child_size = ImVec2(0, ImGui::GetFrameHeightWithSpacing() * 7 + 30);
-        ImGui::BeginChild("scrolling", scrolling_child_size, ImGuiChildFlags_Border, ImGuiWindowFlags_HorizontalScrollbar);
+        ImGui::BeginChild("scrolling", scrolling_child_size, ImGuiChildFlags_Borders, ImGuiWindowFlags_HorizontalScrollbar);
         for (int line = 0; line < lines; line++)
         {
             // Display random stuff. For the sake of this trivial demo we are using basic Button() + SameLine()
@@ -4670,7 +4690,7 @@ static void ShowDemoWindowLayout()
             }
             if (show_child)
             {
-                ImGui::BeginChild("child", ImVec2(0, 0), ImGuiChildFlags_Border);
+                ImGui::BeginChild("child", ImVec2(0, 0), ImGuiChildFlags_Borders);
                 ImGui::EndChild();
             }
             ImGui::End();
@@ -5156,8 +5176,8 @@ const ImGuiTableSortSpecs* MyItem::s_current_sort_specs = NULL;
 static void PushStyleCompact()
 {
     ImGuiStyle& style = ImGui::GetStyle();
-    ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(style.FramePadding.x, (float)(int)(style.FramePadding.y * 0.60f)));
-    ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(style.ItemSpacing.x, (float)(int)(style.ItemSpacing.y * 0.60f)));
+    ImGui::PushStyleVarY(ImGuiStyleVar_FramePadding, (float)(int)(style.FramePadding.y * 0.60f));
+    ImGui::PushStyleVarY(ImGuiStyleVar_ItemSpacing, (float)(int)(style.ItemSpacing.y * 0.60f));
 }
 
 static void PopStyleCompact()
@@ -6191,7 +6211,7 @@ static void ShowDemoWindowTables()
             for (int row = 0; row < 8; row++)
             {
                 if ((row % 3) == 2)
-                    ImGui::PushStyleVar(ImGuiStyleVar_CellPadding, ImVec2(style.CellPadding.x, 20.0f));
+                    ImGui::PushStyleVarY(ImGuiStyleVar_CellPadding, 20.0f);
                 ImGui::TableNextRow(ImGuiTableRowFlags_None);
                 ImGui::TableNextColumn();
                 ImGui::Text("CellPadding.y = %.2f", style.CellPadding.y);
@@ -6470,7 +6490,11 @@ static void ShowDemoWindowTables()
             // FIXME: It would be nice to actually demonstrate full-featured selection using those checkbox.
             static bool column_selected[3] = {};
 
-            // Instead of calling TableHeadersRow() we'll submit custom headers ourselves
+            // Instead of calling TableHeadersRow() we'll submit custom headers ourselves.
+            // (A different approach is also possible:
+            //    - Specify ImGuiTableColumnFlags_NoHeaderLabel in some TableSetupColumn() call.
+            //    - Call TableHeadersRow() normally. This will submit TableHeader() with no name.
+            //    - Then call TableSetColumnIndex() to position yourself in the column and submit your stuff e.g. Checkbox().)
             ImGui::TableNextRow(ImGuiTableRowFlags_Headers);
             for (int column = 0; column < COLUMNS_COUNT; column++)
             {
@@ -6485,6 +6509,7 @@ static void ShowDemoWindowTables()
                 ImGui::PopID();
             }
 
+            // Submit table contents
             for (int row = 0; row < 5; row++)
             {
                 ImGui::TableNextRow();
@@ -6519,6 +6544,7 @@ static void ShowDemoWindowTables()
         ImGui::CheckboxFlags("_ScrollX", &table_flags, ImGuiTableFlags_ScrollX);
         ImGui::CheckboxFlags("_ScrollY", &table_flags, ImGuiTableFlags_ScrollY);
         ImGui::CheckboxFlags("_Resizable", &table_flags, ImGuiTableFlags_Resizable);
+        ImGui::CheckboxFlags("_Sortable", &table_flags, ImGuiTableFlags_Sortable);
         ImGui::CheckboxFlags("_NoBordersInBody", &table_flags, ImGuiTableFlags_NoBordersInBody);
         ImGui::CheckboxFlags("_HighlightHoveredColumn", &table_flags, ImGuiTableFlags_HighlightHoveredColumn);
         ImGui::SetNextItemWidth(ImGui::GetFontSize() * 8);
@@ -7209,12 +7235,14 @@ static void ShowDemoWindowColumns()
         {
             if (h_borders && ImGui::GetColumnIndex() == 0)
                 ImGui::Separator();
+            ImGui::PushID(i);
             ImGui::Text("%c%c%c", 'a' + i, 'a' + i, 'a' + i);
             ImGui::Text("Width %.2f", ImGui::GetColumnWidth());
             ImGui::Text("Avail %.2f", ImGui::GetContentRegionAvail().x);
             ImGui::Text("Offset %.2f", ImGui::GetColumnOffset());
             ImGui::Text("Long text that is likely to clip");
             ImGui::Button("Button", ImVec2(-FLT_MIN, 0.0f));
+            ImGui::PopID();
             ImGui::NextColumn();
         }
         ImGui::Columns(1);
@@ -7537,7 +7565,8 @@ static void ShowDemoWindowInputs()
             IM_ASSERT(IM_ARRAYSIZE(mouse_cursors_names) == ImGuiMouseCursor_COUNT);
 
             ImGuiMouseCursor current = ImGui::GetMouseCursor();
-            ImGui::Text("Current mouse cursor = %d: %s", current, mouse_cursors_names[current]);
+            const char* cursor_name = (current >= ImGuiMouseCursor_Arrow) && (current < ImGuiMouseCursor_COUNT) ? mouse_cursors_names[current] : "N/A";
+            ImGui::Text("Current mouse cursor = %d: %s", current, cursor_name);
             ImGui::BeginDisabled(true);
             ImGui::CheckboxFlags("io.BackendFlags: HasMouseCursors", &io.BackendFlags, ImGuiBackendFlags_HasMouseCursors);
             ImGui::EndDisabled();
@@ -7762,6 +7791,7 @@ void ImGui::ShowAboutWindow(bool* p_open)
 #endif
 #ifdef __EMSCRIPTEN__
         ImGui::Text("define: __EMSCRIPTEN__");
+        ImGui::Text("Emscripten: %d.%d.%d", __EMSCRIPTEN_major__, __EMSCRIPTEN_minor__, __EMSCRIPTEN_tiny__);
 #endif
 #ifdef IMGUI_HAS_VIEWPORT
         ImGui::Text("define: IMGUI_HAS_VIEWPORT");
@@ -8040,7 +8070,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
                 "Right-click to open edit options menu.");
 
             ImGui::SetNextWindowSizeConstraints(ImVec2(0.0f, ImGui::GetTextLineHeightWithSpacing() * 10), ImVec2(FLT_MAX, FLT_MAX));
-            ImGui::BeginChild("##colors", ImVec2(0, 0), ImGuiChildFlags_Border | ImGuiChildFlags_NavFlattened, ImGuiWindowFlags_AlwaysVerticalScrollbar | ImGuiWindowFlags_AlwaysHorizontalScrollbar);
+            ImGui::BeginChild("##colors", ImVec2(0, 0), ImGuiChildFlags_Borders | ImGuiChildFlags_NavFlattened, ImGuiWindowFlags_AlwaysVerticalScrollbar | ImGuiWindowFlags_AlwaysHorizontalScrollbar);
             ImGui::PushItemWidth(ImGui::GetFontSize() * -12);
             for (int i = 0; i < ImGuiCol_COUNT; i++)
             {
@@ -8274,7 +8304,7 @@ static void ShowExampleMenuFile()
     {
         static bool enabled = true;
         ImGui::MenuItem("Enabled", "", &enabled);
-        ImGui::BeginChild("child", ImVec2(0, 60), ImGuiChildFlags_Border);
+        ImGui::BeginChild("child", ImVec2(0, 60), ImGuiChildFlags_Borders);
         for (int i = 0; i < 10; i++)
             ImGui::Text("Scrolling Text %d", i);
         ImGui::EndChild();
@@ -8871,7 +8901,7 @@ static void ShowExampleAppLayout(bool* p_open)
         // Left
         static int selected = 0;
         {
-            ImGui::BeginChild("left pane", ImVec2(150, 0), ImGuiChildFlags_Border | ImGuiChildFlags_ResizeX);
+            ImGui::BeginChild("left pane", ImVec2(150, 0), ImGuiChildFlags_Borders | ImGuiChildFlags_ResizeX);
             for (int i = 0; i < 100; i++)
             {
                 // FIXME: Good candidate to use ImGuiSelectableFlags_SelectOnNav
@@ -8932,7 +8962,7 @@ struct ExampleAppPropertyEditor
     {
         // Left side: draw tree
         // - Currently using a table to benefit from RowBg feature
-        if (ImGui::BeginChild("##tree", ImVec2(300, 0), ImGuiChildFlags_ResizeX | ImGuiChildFlags_Border | ImGuiChildFlags_NavFlattened))
+        if (ImGui::BeginChild("##tree", ImVec2(300, 0), ImGuiChildFlags_ResizeX | ImGuiChildFlags_Borders | ImGuiChildFlags_NavFlattened))
         {
             ImGui::SetNextItemWidth(-FLT_MIN);
             ImGui::SetNextItemShortcut(ImGuiMod_Ctrl | ImGuiKey_F, ImGuiInputFlags_Tooltip);
@@ -9549,7 +9579,7 @@ static void ShowExampleAppCustomRendering(bool* p_open)
             // To use a child window instead we could use, e.g:
             //      ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0, 0));      // Disable padding
             //      ImGui::PushStyleColor(ImGuiCol_ChildBg, IM_COL32(50, 50, 50, 255));  // Set a background color
-            //      ImGui::BeginChild("canvas", ImVec2(0.0f, 0.0f), ImGuiChildFlags_Border, ImGuiWindowFlags_NoMove);
+            //      ImGui::BeginChild("canvas", ImVec2(0.0f, 0.0f), ImGuiChildFlags_Borders, ImGuiWindowFlags_NoMove);
             //      ImGui::PopStyleColor();
             //      ImGui::PopStyleVar();
             //      [...]
@@ -10397,7 +10427,7 @@ struct ExampleAssetsBrowser
 
         ImGuiIO& io = ImGui::GetIO();
         ImGui::SetNextWindowContentSize(ImVec2(0.0f, LayoutOuterPadding + LayoutLineCount * (LayoutItemSize.x + LayoutItemSpacing)));
-        if (ImGui::BeginChild("Assets", ImVec2(0.0f, -ImGui::GetTextLineHeightWithSpacing()), ImGuiChildFlags_Border, ImGuiWindowFlags_NoMove))
+        if (ImGui::BeginChild("Assets", ImVec2(0.0f, -ImGui::GetTextLineHeightWithSpacing()), ImGuiChildFlags_Borders, ImGuiWindowFlags_NoMove))
         {
             ImDrawList* draw_list = ImGui::GetWindowDrawList();
 

imgui_draw.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.91.0
+// dear imgui, v1.91.2
 // (drawing and font code)
 
 /*
@@ -532,7 +532,6 @@ void ImDrawList::_OnChangedClipRect()
         CmdBuffer.pop_back();
         return;
     }
-
     curr_cmd->ClipRect = _CmdHeader.ClipRect;
 }
 
@@ -555,7 +554,6 @@ void ImDrawList::_OnChangedTextureID()
         CmdBuffer.pop_back();
         return;
     }
-
     curr_cmd->TextureId = _CmdHeader.TextureId;
 }
 
@@ -631,6 +629,15 @@ void ImDrawList::PopTextureID()
     _OnChangedTextureID();
 }
 
+// This is used by ImGui::PushFont()/PopFont(). It works because we never use _TextureIdStack[] elsewhere than in PushTextureID()/PopTextureID().
+void ImDrawList::_SetTextureID(ImTextureID texture_id)
+{
+    if (_CmdHeader.TextureId == texture_id)
+        return;
+    _CmdHeader.TextureId = texture_id;
+    _OnChangedTextureID();
+}
+
 // Reserve space for a number of vertices and indices.
 // You must finish filling your reserved data before calling PrimReserve() again, as it may reallocate or
 // submit the intermediate results. PrimUnreserve() can be used to release unused allocations.
@@ -2498,13 +2505,14 @@ ImFont* ImFontAtlas::AddFont(const ImFontConfig* font_cfg)
 {
     IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
     IM_ASSERT(font_cfg->FontData != NULL && font_cfg->FontDataSize > 0);
-    IM_ASSERT(font_cfg->SizePixels > 0.0f);
+    IM_ASSERT(font_cfg->SizePixels > 0.0f && "Is ImFontConfig struct correctly initialized?");
+    IM_ASSERT(font_cfg->OversampleH > 0 && font_cfg->OversampleV > 0 && "Is ImFontConfig struct correctly initialized?");
 
     // Create new font
     if (!font_cfg->MergeMode)
         Fonts.push_back(IM_NEW(ImFont));
     else
-        IM_ASSERT(!Fonts.empty() && "Cannot use MergeMode for the first font"); // When using MergeMode make sure that a font has already been added before. You can use ImGui::GetIO().Fonts->AddFontDefault() to add the default imgui font.
+        IM_ASSERT(Fonts.Size > 0 && "Cannot use MergeMode for the first font"); // When using MergeMode make sure that a font has already been added before. You can use ImGui::GetIO().Fonts->AddFontDefault() to add the default imgui font.
 
     ConfigData.push_back(*font_cfg);
     ImFontConfig& new_font_cfg = ConfigData.back();
@@ -2821,8 +2829,9 @@ static bool ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
         for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
         {
             // Check for valid range. This may also help detect *some* dangling pointers, because a common
-            // user error is to setup ImFontConfig::GlyphRanges with a pointer to data that isn't persistent.
-            IM_ASSERT(src_range[0] <= src_range[1]);
+            // user error is to setup ImFontConfig::GlyphRanges with a pointer to data that isn't persistent,
+            // or to forget to zero-terminate the glyph range array.
+            IM_ASSERT(src_range[0] <= src_range[1] && "Invalid range: is your glyph range array persistent? it is zero-terminated?");
             src_tmp.GlyphsHighest = ImMax(src_tmp.GlyphsHighest, (int)src_range[1]);
         }
         dst_tmp.SrcCount++;

imgui_internal.h

@@ -1,4 +1,4 @@
-// dear imgui, v1.91.0
+// dear imgui, v1.91.2
 // (internal structures/api)
 
 // You may use this file to debug, understand or extend Dear ImGui features but we don't provide any guarantee of forward compatibility.
@@ -204,24 +204,6 @@ typedef void (*ImGuiErrorLogCallback)(void* user_data, const char* fmt, ...);
 extern IMGUI_API ImGuiContext* GImGui;  // Current implicit context pointer
 #endif
 
-//-------------------------------------------------------------------------
-// [SECTION] STB libraries includes
-//-------------------------------------------------------------------------
-
-namespace ImStb
-{
-
-#undef IMSTB_TEXTEDIT_STRING
-#undef IMSTB_TEXTEDIT_CHARTYPE
-#define IMSTB_TEXTEDIT_STRING             ImGuiInputTextState
-#define IMSTB_TEXTEDIT_CHARTYPE           ImWchar
-#define IMSTB_TEXTEDIT_GETWIDTH_NEWLINE   (-1.0f)
-#define IMSTB_TEXTEDIT_UNDOSTATECOUNT     99
-#define IMSTB_TEXTEDIT_UNDOCHARCOUNT      999
-#include "imstb_textedit.h"
-
-} // namespace ImStb
-
 //-----------------------------------------------------------------------------
 // [SECTION] Macros
 //-----------------------------------------------------------------------------
@@ -395,7 +377,7 @@ IMGUI_API const char*   ImStristr(const char* haystack, const char* haystack_end
 IMGUI_API void          ImStrTrimBlanks(char* str);                                         // Remove leading and trailing blanks from a buffer.
 IMGUI_API const char*   ImStrSkipBlank(const char* str);                                    // Find first non-blank character.
 IMGUI_API int           ImStrlenW(const ImWchar* str);                                      // Computer string length (ImWchar string)
-IMGUI_API const ImWchar*ImStrbolW(const ImWchar* buf_mid_line, const ImWchar* buf_begin);   // Find beginning-of-line (ImWchar string)
+IMGUI_API const char*   ImStrbol(const char* buf_mid_line, const char* buf_begin);          // Find beginning-of-line
 IM_MSVC_RUNTIME_CHECKS_OFF
 static inline char      ImToUpper(char c)               { return (c >= 'a' && c <= 'z') ? c &= ~32 : c; }
 static inline bool      ImCharIsBlankA(char c)          { return c == ' ' || c == '\t'; }
@@ -982,6 +964,7 @@ enum ImGuiTreeNodeFlagsPrivate_
 {
     ImGuiTreeNodeFlags_ClipLabelForTrailingButton = 1 << 28,// FIXME-WIP: Hard-coded for CollapsingHeader()
     ImGuiTreeNodeFlags_UpsideDownArrow            = 1 << 29,// FIXME-WIP: Turn Down arrow into an Up arrow, but reversed trees (#6517)
+    ImGuiTreeNodeFlags_OpenOnMask_                = ImGuiTreeNodeFlags_OpenOnDoubleClick | ImGuiTreeNodeFlags_OpenOnArrow,
 };
 
 enum ImGuiSeparatorFlags_
@@ -1120,20 +1103,31 @@ struct IMGUI_API ImGuiInputTextDeactivatedState
     ImGuiInputTextDeactivatedState()    { memset(this, 0, sizeof(*this)); }
     void    ClearFreeMemory()           { ID = 0; TextA.clear(); }
 };
+
+// Forward declare imstb_textedit.h structure + make its main configuration define accessible
+#undef IMSTB_TEXTEDIT_STRING
+#undef IMSTB_TEXTEDIT_CHARTYPE
+#define IMSTB_TEXTEDIT_STRING             ImGuiInputTextState
+#define IMSTB_TEXTEDIT_CHARTYPE           char
+#define IMSTB_TEXTEDIT_GETWIDTH_NEWLINE   (-1.0f)
+#define IMSTB_TEXTEDIT_UNDOSTATECOUNT     99
+#define IMSTB_TEXTEDIT_UNDOCHARCOUNT      999
+namespace ImStb { struct STB_TexteditState; }
+typedef ImStb::STB_TexteditState ImStbTexteditState;
+
 // Internal state of the currently focused/edited text input box
 // For a given item ID, access with ImGui::GetInputTextState()
 struct IMGUI_API ImGuiInputTextState
 {
     ImGuiContext*           Ctx;                    // parent UI context (needs to be set explicitly by parent).
+    ImStbTexteditState*     Stb;                    // State for stb_textedit.h
     ImGuiID                 ID;                     // widget id owning the text state
-    int                     CurLenW, CurLenA;       // we need to maintain our buffer length in both UTF-8 and wchar format. UTF-8 length is valid even if TextA is not.
-    ImVector<ImWchar>       TextW;                  // edit buffer, we need to persist but can't guarantee the persistence of the user-provided buffer. so we copy into own buffer.
-    ImVector<char>          TextA;                  // temporary UTF8 buffer for callbacks and other operations. this is not updated in every code-path! size=capacity.
+    int                     CurLenA;                // UTF-8 length of the string in TextA (in bytes)
+    ImVector<char>          TextA;                  // main UTF8 buffer.
     ImVector<char>          InitialTextA;           // value to revert to when pressing Escape = backup of end-user buffer at the time of focus (in UTF-8, unaltered)
-    bool                    TextAIsValid;           // temporary UTF8 buffer is not initially valid before we make the widget active (until then we pull the data from user argument)
+    ImVector<char>          CallbackTextBackup;     // temporary storage for callback to support automatic reconcile of undo-stack
     int                     BufCapacityA;           // end-user buffer capacity
-    float                   ScrollX;                // horizontal scrolling/offset
-    ImStb::STB_TexteditState Stb;                   // state for stb_textedit.h
+    ImVec2                  Scroll;                 // horizontal offset (managed manually) + vertical scrolling (pulled from child window's own Scroll.y)
     float                   CursorAnim;             // timer for cursor blink, reset on every user action so the cursor reappears immediately
     bool                    CursorFollow;           // set when we want scrolling to follow the current cursor position (not always!)
     bool                    SelectedAllMouseLock;   // after a double-click to select all, we ignore further mouse drags to update selection
@@ -1143,32 +1137,31 @@ struct IMGUI_API ImGuiInputTextState
     int                     ReloadSelectionStart;   // POSITIONS ARE IN IMWCHAR units *NOT* UTF-8 this is why this is not exposed yet.
     int                     ReloadSelectionEnd;
 
-    ImGuiInputTextState()                   { memset(this, 0, sizeof(*this)); }
-    void        ClearText()                 { CurLenW = CurLenA = 0; TextW[0] = 0; TextA[0] = 0; CursorClamp(); }
-    void        ClearFreeMemory()           { TextW.clear(); TextA.clear(); InitialTextA.clear(); }
-    int         GetUndoAvailCount() const   { return Stb.undostate.undo_point; }
-    int         GetRedoAvailCount() const   { return IMSTB_TEXTEDIT_UNDOSTATECOUNT - Stb.undostate.redo_point; }
+    ImGuiInputTextState();
+    ~ImGuiInputTextState();
+    void        ClearText()                 { CurLenA = 0; TextA[0] = 0; CursorClamp(); }
+    void        ClearFreeMemory()           { TextA.clear(); InitialTextA.clear(); }
     void        OnKeyPressed(int key);      // Cannot be inline because we call in code in stb_textedit.h implementation
+    void        OnCharPressed(unsigned int c);
 
     // Cursor & Selection
-    void        CursorAnimReset()           { CursorAnim = -0.30f; }                                   // After a user-input the cursor stays on for a while without blinking
-    void        CursorClamp()               { Stb.cursor = ImMin(Stb.cursor, CurLenW); Stb.select_start = ImMin(Stb.select_start, CurLenW); Stb.select_end = ImMin(Stb.select_end, CurLenW); }
-    bool        HasSelection() const        { return Stb.select_start != Stb.select_end; }
-    void        ClearSelection()            { Stb.select_start = Stb.select_end = Stb.cursor; }
-    int         GetCursorPos() const        { return Stb.cursor; }
-    int         GetSelectionStart() const   { return Stb.select_start; }
-    int         GetSelectionEnd() const     { return Stb.select_end; }
-    void        SelectAll()                 { Stb.select_start = 0; Stb.cursor = Stb.select_end = CurLenW; Stb.has_preferred_x = 0; }
+    void        CursorAnimReset();
+    void        CursorClamp();
+    bool        HasSelection() const;
+    void        ClearSelection();
+    int         GetCursorPos() const;
+    int         GetSelectionStart() const;
+    int         GetSelectionEnd() const;
+    void        SelectAll();
 
     // Reload user buf (WIP #2890)
     // If you modify underlying user-passed const char* while active you need to call this (InputText V2 may lift this)
     //   strcpy(my_buf, "hello");
     //   if (ImGuiInputTextState* state = ImGui::GetInputTextState(id)) // id may be ImGui::GetItemID() is last item
     //       state->ReloadUserBufAndSelectAll();
-    void        ReloadUserBufAndSelectAll()     { ReloadUserBuf = true; ReloadSelectionStart = 0; ReloadSelectionEnd = INT_MAX; }
-    void        ReloadUserBufAndKeepSelection() { ReloadUserBuf = true; ReloadSelectionStart = Stb.select_start; ReloadSelectionEnd = Stb.select_end; }
-    void        ReloadUserBufAndMoveToEnd()     { ReloadUserBuf = true; ReloadSelectionStart = ReloadSelectionEnd = INT_MAX; }
-
+    void        ReloadUserBufAndSelectAll();
+    void        ReloadUserBufAndKeepSelection();
+    void        ReloadUserBufAndMoveToEnd();
 };
 
 enum ImGuiWindowRefreshFlags_
@@ -1840,9 +1833,10 @@ enum ImGuiDockNodeFlagsPrivate_
     ImGuiDockNodeFlags_NoDocking                = ImGuiDockNodeFlags_NoDockingOverMe | ImGuiDockNodeFlags_NoDockingOverOther | ImGuiDockNodeFlags_NoDockingOverEmpty | ImGuiDockNodeFlags_NoDockingSplit | ImGuiDockNodeFlags_NoDockingSplitOther,
     // Masks
     ImGuiDockNodeFlags_SharedFlagsInheritMask_  = ~0,
-    ImGuiDockNodeFlags_NoResizeFlagsMask_       = ImGuiDockNodeFlags_NoResize | ImGuiDockNodeFlags_NoResizeX | ImGuiDockNodeFlags_NoResizeY,
+    ImGuiDockNodeFlags_NoResizeFlagsMask_       = (int)ImGuiDockNodeFlags_NoResize | ImGuiDockNodeFlags_NoResizeX | ImGuiDockNodeFlags_NoResizeY,
+
     // When splitting, those local flags are moved to the inheriting child, never duplicated
-    ImGuiDockNodeFlags_LocalFlagsTransferMask_  = ImGuiDockNodeFlags_NoDockingSplit | ImGuiDockNodeFlags_NoResizeFlagsMask_ | ImGuiDockNodeFlags_AutoHideTabBar | ImGuiDockNodeFlags_CentralNode | ImGuiDockNodeFlags_NoTabBar | ImGuiDockNodeFlags_HiddenTabBar | ImGuiDockNodeFlags_NoWindowMenuButton | ImGuiDockNodeFlags_NoCloseButton,
+    ImGuiDockNodeFlags_LocalFlagsTransferMask_  = (int)ImGuiDockNodeFlags_NoDockingSplit | ImGuiDockNodeFlags_NoResizeFlagsMask_ | (int)ImGuiDockNodeFlags_AutoHideTabBar | ImGuiDockNodeFlags_CentralNode | ImGuiDockNodeFlags_NoTabBar | ImGuiDockNodeFlags_HiddenTabBar | ImGuiDockNodeFlags_NoWindowMenuButton | ImGuiDockNodeFlags_NoCloseButton,
     ImGuiDockNodeFlags_SavedFlagsMask_          = ImGuiDockNodeFlags_NoResizeFlagsMask_ | ImGuiDockNodeFlags_DockSpace | ImGuiDockNodeFlags_CentralNode | ImGuiDockNodeFlags_NoTabBar | ImGuiDockNodeFlags_HiddenTabBar | ImGuiDockNodeFlags_NoWindowMenuButton | ImGuiDockNodeFlags_NoCloseButton,
 };
 
@@ -1974,6 +1968,7 @@ struct ImGuiViewportP : public ImGuiViewport
     int                 LastFocusedStampCount;  // Last stamp number from when a window hosted by this viewport was focused (by comparing this value between two viewport we have an implicit viewport z-order we use as fallback)
     ImGuiID             LastNameHash;
     ImVec2              LastPos;
+    ImVec2              LastSize;
     float               Alpha;                  // Window opacity (when dragging dockable windows/viewports we make them transparent)
     float               LastAlpha;
     bool                LastFocusedHadNavWindow;// Instead of maintaining a LastFocusedWindow (which may harder to correctly maintain), we merely store weither NavWindow != NULL last time the viewport was focused.
@@ -1985,24 +1980,29 @@ struct ImGuiViewportP : public ImGuiViewport
     ImVec2              LastPlatformPos;
     ImVec2              LastPlatformSize;
     ImVec2              LastRendererSize;
-    ImVec2              WorkOffsetMin;          // Work Area: Offset from Pos to top-left corner of Work Area. Generally (0,0) or (0,+main_menu_bar_height). Work Area is Full Area but without menu-bars/status-bars (so WorkArea always fit inside Pos/Size!)
-    ImVec2              WorkOffsetMax;          // Work Area: Offset from Pos+Size to bottom-right corner of Work Area. Generally (0,0) or (0,-status_bar_height).
-    ImVec2              BuildWorkOffsetMin;     // Work Area: Offset being built during current frame. Generally >= 0.0f.
-    ImVec2              BuildWorkOffsetMax;     // Work Area: Offset being built during current frame. Generally <= 0.0f.
+
+    // Per-viewport work area
+    // - Insets are >= 0.0f values, distance from viewport corners to work area.
+    // - BeginMainMenuBar() and DockspaceOverViewport() tend to use work area to avoid stepping over existing contents.
+    // - Generally 'safeAreaInsets' in iOS land, 'DisplayCutout' in Android land.
+    ImVec2              WorkInsetMin;           // Work Area inset locked for the frame. GetWorkRect() always fits within GetMainRect().
+    ImVec2              WorkInsetMax;           // "
+    ImVec2              BuildWorkInsetMin;      // Work Area inset accumulator for current frame, to become next frame's WorkInset
+    ImVec2              BuildWorkInsetMax;      // "
 
     ImGuiViewportP()                    { Window = NULL; Idx = -1; LastFrameActive = BgFgDrawListsLastFrame[0] = BgFgDrawListsLastFrame[1] = LastFocusedStampCount = -1; LastNameHash = 0; Alpha = LastAlpha = 1.0f; LastFocusedHadNavWindow = false; PlatformMonitor = -1; BgFgDrawLists[0] = BgFgDrawLists[1] = NULL; LastPlatformPos = LastPlatformSize = LastRendererSize = ImVec2(FLT_MAX, FLT_MAX); }
     ~ImGuiViewportP()                   { if (BgFgDrawLists[0]) IM_DELETE(BgFgDrawLists[0]); if (BgFgDrawLists[1]) IM_DELETE(BgFgDrawLists[1]); }
     void    ClearRequestFlags()         { PlatformRequestClose = PlatformRequestMove = PlatformRequestResize = false; }
 
     // Calculate work rect pos/size given a set of offset (we have 1 pair of offset for rect locked from last frame data, and 1 pair for currently building rect)
-    ImVec2  CalcWorkRectPos(const ImVec2& off_min) const                            { return ImVec2(Pos.x + off_min.x, Pos.y + off_min.y); }
-    ImVec2  CalcWorkRectSize(const ImVec2& off_min, const ImVec2& off_max) const    { return ImVec2(ImMax(0.0f, Size.x - off_min.x + off_max.x), ImMax(0.0f, Size.y - off_min.y + off_max.y)); }
-    void    UpdateWorkRect()            { WorkPos = CalcWorkRectPos(WorkOffsetMin); WorkSize = CalcWorkRectSize(WorkOffsetMin, WorkOffsetMax); } // Update public fields
+    ImVec2  CalcWorkRectPos(const ImVec2& inset_min) const                           { return ImVec2(Pos.x + inset_min.x, Pos.y + inset_min.y); }
+    ImVec2  CalcWorkRectSize(const ImVec2& inset_min, const ImVec2& inset_max) const { return ImVec2(ImMax(0.0f, Size.x - inset_min.x - inset_max.x), ImMax(0.0f, Size.y - inset_min.y - inset_max.y)); }
+    void    UpdateWorkRect()            { WorkPos = CalcWorkRectPos(WorkInsetMin); WorkSize = CalcWorkRectSize(WorkInsetMin, WorkInsetMax); } // Update public fields
 
     // Helpers to retrieve ImRect (we don't need to store BuildWorkRect as every access tend to change it, hence the code asymmetry)
     ImRect  GetMainRect() const         { return ImRect(Pos.x, Pos.y, Pos.x + Size.x, Pos.y + Size.y); }
     ImRect  GetWorkRect() const         { return ImRect(WorkPos.x, WorkPos.y, WorkPos.x + WorkSize.x, WorkPos.y + WorkSize.y); }
-    ImRect  GetBuildWorkRect() const    { ImVec2 pos = CalcWorkRectPos(BuildWorkOffsetMin); ImVec2 size = CalcWorkRectSize(BuildWorkOffsetMin, BuildWorkOffsetMax); return ImRect(pos.x, pos.y, pos.x + size.x, pos.y + size.y); }
+    ImRect  GetBuildWorkRect() const    { ImVec2 pos = CalcWorkRectPos(BuildWorkInsetMin); ImVec2 size = CalcWorkRectSize(BuildWorkInsetMin, BuildWorkInsetMax); return ImRect(pos.x, pos.y, pos.x + size.x, pos.y + size.y); }
 };
 
 //-----------------------------------------------------------------------------
@@ -2061,6 +2061,7 @@ enum ImGuiLocKey : int
     ImGuiLocKey_WindowingMainMenuBar,
     ImGuiLocKey_WindowingPopup,
     ImGuiLocKey_WindowingUntitled,
+    ImGuiLocKey_OpenLink_s,
     ImGuiLocKey_CopyLink,
     ImGuiLocKey_DockingHideTabBar,
     ImGuiLocKey_DockingHoldShiftToDock,
@@ -2237,9 +2238,11 @@ struct ImGuiContext
     ImVec2                  WheelingAxisAvg;
 
     // Item/widgets state and tracking information
+    ImGuiID                 DebugDrawIdConflicts;               // Set when we detect multiple items with the same identifier
     ImGuiID                 DebugHookIdInfo;                    // Will call core hooks: DebugHookIdInfo() from GetID functions, used by ID Stack Tool [next HoveredId/ActiveId to not pull in an extra cache-line]
     ImGuiID                 HoveredId;                          // Hovered widget, filled during the frame
     ImGuiID                 HoveredIdPreviousFrame;
+    int                     HoveredIdPreviousFrameItemCount;    // Count numbers of items using the same ID as last frame's hovered id
     float                   HoveredIdTimer;                     // Measure contiguous hovering time
     float                   HoveredIdNotActiveTimer;            // Measure contiguous hovering time where the item has not been active
     bool                    HoveredIdAllowOverlap;
@@ -2478,7 +2481,7 @@ struct ImGuiContext
 
     // Platform support
     ImGuiPlatformImeData    PlatformImeData;                    // Data updated by current frame
-    ImGuiPlatformImeData    PlatformImeDataPrev;                // Previous frame data. When changed we call the io.PlatformSetImeDataFn() handler.
+    ImGuiPlatformImeData    PlatformImeDataPrev;                // Previous frame data. When changed we call the platform_io.Platform_SetImeDataFn() handler.
     ImGuiID                 PlatformImeViewport;
 
     // Extensions
@@ -2577,8 +2580,10 @@ struct ImGuiContext
         WheelingWindowStartFrame = WheelingWindowScrolledFrame = -1;
         WheelingWindowReleaseTimer = 0.0f;
 
+        DebugDrawIdConflicts = 0;
         DebugHookIdInfo = 0;
         HoveredId = HoveredIdPreviousFrame = 0;
+        HoveredIdPreviousFrameItemCount = 0;
         HoveredIdAllowOverlap = false;
         HoveredIdIsDisabled = false;
         HoveredIdTimer = HoveredIdNotActiveTimer = 0.0f;
@@ -2953,6 +2958,7 @@ public:
     ImGuiID     GetID(const char* str, const char* str_end = NULL);
     ImGuiID     GetID(const void* ptr);
     ImGuiID     GetID(int n);
+    ImGuiID     GetIDFromPos(const ImVec2& p_abs);
     ImGuiID     GetIDFromRectangle(const ImRect& r_abs);
 
     // We don't use g.FontSize because the window may be != g.CurrentWindow.
@@ -3066,6 +3072,7 @@ struct ImGuiTableColumn
     float                   MaxX;
     float                   WidthRequest;                   // Master width absolute value when !(Flags & _WidthStretch). When Stretch this is derived every frame from StretchWeight in TableUpdateLayout()
     float                   WidthAuto;                      // Automatic width
+    float                   WidthMax;                       // Maximum width (FIXME: overwritten by each instance)
     float                   StretchWeight;                  // Master width weight when (Flags & _WidthStretch). Often around ~1.0f initially.
     float                   InitStretchWeightOrWidth;       // Value passed to TableSetupColumn(). For Width it is a content width (_without padding_).
     ImRect                  ClipRect;                       // Clipping rectangle for the column
@@ -3364,8 +3371,8 @@ namespace ImGui
     inline void             SetWindowParentWindowForFocusRoute(ImGuiWindow* window, ImGuiWindow* parent_window) { window->ParentWindowForFocusRoute = parent_window; } // You may also use SetNextWindowClass()'s FocusRouteParentWindowId field.
     inline ImRect           WindowRectAbsToRel(ImGuiWindow* window, const ImRect& r) { ImVec2 off = window->DC.CursorStartPos; return ImRect(r.Min.x - off.x, r.Min.y - off.y, r.Max.x - off.x, r.Max.y - off.y); }
     inline ImRect           WindowRectRelToAbs(ImGuiWindow* window, const ImRect& r) { ImVec2 off = window->DC.CursorStartPos; return ImRect(r.Min.x + off.x, r.Min.y + off.y, r.Max.x + off.x, r.Max.y + off.y); }
-    inline ImVec2           WindowPosRelToAbs(ImGuiWindow* window, const ImVec2& p)  { ImVec2 off = window->DC.CursorStartPos; return ImVec2(p.x + off.x, p.y + off.y); }
     inline ImVec2           WindowPosAbsToRel(ImGuiWindow* window, const ImVec2& p)  { ImVec2 off = window->DC.CursorStartPos; return ImVec2(p.x - off.x, p.y - off.y); }
+    inline ImVec2           WindowPosRelToAbs(ImGuiWindow* window, const ImVec2& p)  { ImVec2 off = window->DC.CursorStartPos; return ImVec2(p.x + off.x, p.y + off.y); }
 
     // Windows: Display Order and Focus Order
     IMGUI_API void          FocusWindow(ImGuiWindow* window, ImGuiFocusRequestFlags flags = 0);
@@ -3405,7 +3412,7 @@ namespace ImGui
     IMGUI_API void          CallContextHooks(ImGuiContext* context, ImGuiContextHookType type);
 
     // Viewports
-    IMGUI_API void          TranslateWindowsInViewport(ImGuiViewportP* viewport, const ImVec2& old_pos, const ImVec2& new_pos);
+    IMGUI_API void          TranslateWindowsInViewport(ImGuiViewportP* viewport, const ImVec2& old_pos, const ImVec2& new_pos, const ImVec2& old_size, const ImVec2& new_size);
     IMGUI_API void          ScaleWindowsInViewport(ImGuiViewportP* viewport, float scale);
     IMGUI_API void          DestroyPlatformWindow(ImGuiViewportP* viewport);
     IMGUI_API void          SetWindowViewport(ImGuiWindow* window, ImGuiViewportP* viewport);
@@ -3550,7 +3557,7 @@ namespace ImGui
     inline bool             IsGamepadKey(ImGuiKey key)                  { return key >= ImGuiKey_Gamepad_BEGIN && key < ImGuiKey_Gamepad_END; }
     inline bool             IsMouseKey(ImGuiKey key)                    { return key >= ImGuiKey_Mouse_BEGIN && key < ImGuiKey_Mouse_END; }
     inline bool             IsAliasKey(ImGuiKey key)                    { return key >= ImGuiKey_Aliases_BEGIN && key < ImGuiKey_Aliases_END; }
-    inline bool             IsModKey(ImGuiKey key)                      { return key >= ImGuiKey_LeftCtrl && key <= ImGuiKey_RightSuper; }
+    inline bool             IsLRModKey(ImGuiKey key)                    { return key >= ImGuiKey_LeftCtrl && key <= ImGuiKey_RightSuper; }
     ImGuiKeyChord           FixupKeyChord(ImGuiKeyChord key_chord);
     inline ImGuiKey         ConvertSingleModFlagToKey(ImGuiKey key)
     {
@@ -3769,7 +3776,7 @@ namespace ImGui
     IMGUI_API ImRect        TableGetCellBgRect(const ImGuiTable* table, int column_n);
     IMGUI_API const char*   TableGetColumnName(const ImGuiTable* table, int column_n);
     IMGUI_API ImGuiID       TableGetColumnResizeID(ImGuiTable* table, int column_n, int instance_no = 0);
-    IMGUI_API float         TableGetMaxColumnWidth(const ImGuiTable* table, int column_n);
+    IMGUI_API float         TableCalcMaxColumnWidth(const ImGuiTable* table, int column_n);
     IMGUI_API void          TableSetColumnWidthAutoSingle(ImGuiTable* table, int column_n);
     IMGUI_API void          TableSetColumnWidthAutoAll(ImGuiTable* table);
     IMGUI_API void          TableRemove(ImGuiTable* table);
@@ -3816,7 +3823,7 @@ namespace ImGui
     IMGUI_API void          RenderTextClipped(const ImVec2& pos_min, const ImVec2& pos_max, const char* text, const char* text_end, const ImVec2* text_size_if_known, const ImVec2& align = ImVec2(0, 0), const ImRect* clip_rect = NULL);
     IMGUI_API void          RenderTextClippedEx(ImDrawList* draw_list, const ImVec2& pos_min, const ImVec2& pos_max, const char* text, const char* text_end, const ImVec2* text_size_if_known, const ImVec2& align = ImVec2(0, 0), const ImRect* clip_rect = NULL);
     IMGUI_API void          RenderTextEllipsis(ImDrawList* draw_list, const ImVec2& pos_min, const ImVec2& pos_max, float clip_max_x, float ellipsis_max_x, const char* text, const char* text_end, const ImVec2* text_size_if_known);
-    IMGUI_API void          RenderFrame(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, bool border = true, float rounding = 0.0f);
+    IMGUI_API void          RenderFrame(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, bool borders = true, float rounding = 0.0f);
     IMGUI_API void          RenderFrameBorder(ImVec2 p_min, ImVec2 p_max, float rounding = 0.0f);
     IMGUI_API void          RenderColorRectWithAlphaCheckerboard(ImDrawList* draw_list, ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, float grid_step, ImVec2 grid_off, float rounding = 0.0f, ImDrawFlags flags = 0);
     IMGUI_API void          RenderNavHighlight(const ImRect& bb, ImGuiID id, ImGuiNavHighlightFlags flags = ImGuiNavHighlightFlags_None); // Navigation highlight

imgui_tables.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.91.0
+// dear imgui, v1.91.2
 // (tables and columns code)
 
 /*
@@ -328,7 +328,7 @@ bool    ImGui::BeginTableEx(const char* name, ImGuiID id, int columns_count, ImG
     // - always performing the GetOrAddByKey() O(log N) query in g.Tables.Map[].
     const bool use_child_window = (flags & (ImGuiTableFlags_ScrollX | ImGuiTableFlags_ScrollY)) != 0;
     const ImVec2 avail_size = GetContentRegionAvail();
-    const ImVec2 actual_outer_size = CalcItemSize(outer_size, ImMax(avail_size.x, 1.0f), use_child_window ? ImMax(avail_size.y, 1.0f) : 0.0f);
+    const ImVec2 actual_outer_size = ImTrunc(CalcItemSize(outer_size, ImMax(avail_size.x, 1.0f), use_child_window ? ImMax(avail_size.y, 1.0f) : 0.0f));
     const ImRect outer_rect(outer_window->DC.CursorPos, outer_window->DC.CursorPos + actual_outer_size);
     const bool outer_window_is_measuring_size = (outer_window->AutoFitFramesX > 0) || (outer_window->AutoFitFramesY > 0); // Doesn't apply to AlwaysAutoResize windows!
     if (use_child_window && IsClippedEx(outer_rect, 0) && !outer_window_is_measuring_size)
@@ -460,16 +460,27 @@ bool    ImGui::BeginTableEx(const char* name, ImGuiID id, int columns_count, ImG
     temp_data->HostBackupItemWidthStackSize = outer_window->DC.ItemWidthStack.Size;
     inner_window->DC.PrevLineSize = inner_window->DC.CurrLineSize = ImVec2(0.0f, 0.0f);
 
-    // Make left and top borders not overlap our contents by offsetting HostClipRect (#6765)
+    // Make borders not overlap our contents by offsetting HostClipRect (#6765, #7428, #3752)
     // (we normally shouldn't alter HostClipRect as we rely on TableMergeDrawChannels() expanding non-clipped column toward the
     // limits of that rectangle, in order for ImDrawListSplitter::Merge() to merge the draw commands. However since the overlap
     // problem only affect scrolling tables in this case we can get away with doing it without extra cost).
     if (inner_window != outer_window)
     {
+        // FIXME: Because inner_window's Scrollbar doesn't know about border size, since it's not encoded in window->WindowBorderSize,
+        // it already overlaps it and doesn't need an extra offset. Ideally we should be able to pass custom border size with
+        // different x/y values to BeginChild().
         if (flags & ImGuiTableFlags_BordersOuterV)
+        {
             table->HostClipRect.Min.x = ImMin(table->HostClipRect.Min.x + TABLE_BORDER_SIZE, table->HostClipRect.Max.x);
+            if (inner_window->DecoOuterSizeX2 == 0.0f)
+                table->HostClipRect.Max.x = ImMax(table->HostClipRect.Max.x - TABLE_BORDER_SIZE, table->HostClipRect.Min.x);
+        }
         if (flags & ImGuiTableFlags_BordersOuterH)
+        {
             table->HostClipRect.Min.y = ImMin(table->HostClipRect.Min.y + TABLE_BORDER_SIZE, table->HostClipRect.Max.y);
+            if (inner_window->DecoOuterSizeY2 == 0.0f)
+                table->HostClipRect.Max.y = ImMax(table->HostClipRect.Max.y - TABLE_BORDER_SIZE, table->HostClipRect.Min.y);
+        }
     }
 
     // Padding and Spacing
@@ -497,7 +508,7 @@ bool    ImGui::BeginTableEx(const char* name, ImGuiID id, int columns_count, ImG
     table->InnerClipRect = (inner_window == outer_window) ? table->WorkRect : inner_window->ClipRect;
     table->InnerClipRect.ClipWith(table->WorkRect);     // We need this to honor inner_width
     table->InnerClipRect.ClipWithFull(table->HostClipRect);
-    table->InnerClipRect.Max.y = (flags & ImGuiTableFlags_NoHostExtendY) ? ImMin(table->InnerClipRect.Max.y, inner_window->WorkRect.Max.y) : inner_window->ClipRect.Max.y;
+    table->InnerClipRect.Max.y = (flags & ImGuiTableFlags_NoHostExtendY) ? ImMin(table->InnerClipRect.Max.y, inner_window->WorkRect.Max.y) : table->HostClipRect.Max.y;
 
     table->RowPosY1 = table->RowPosY2 = table->WorkRect.Min.y; // This is needed somehow
     table->RowTextBaseline = 0.0f; // This will be cleared again by TableBeginRow()
@@ -855,7 +866,7 @@ void ImGui::TableUpdateLayout(ImGuiTable* table)
 
         // Calculate ideal/auto column width (that's the width required for all contents to be visible without clipping)
         // Combine width from regular rows + width from headers unless requested not to.
-        if (!column->IsPreserveWidthAuto)
+        if (!column->IsPreserveWidthAuto && table->InstanceCurrent == 0)
             column->WidthAuto = TableGetColumnWidthAuto(table, column);
 
         // Non-resizable columns keep their requested width (apply user value regardless of IsPreserveWidthAuto)
@@ -1059,16 +1070,12 @@ void ImGui::TableUpdateLayout(ImGuiTable* table)
             continue;
         }
 
-        // Detect hovered column
-        if (is_hovering_table && mouse_skewed_x >= column->ClipRect.Min.x && mouse_skewed_x < column->ClipRect.Max.x)
-            table->HoveredColumnBody = (ImGuiTableColumnIdx)column_n;
-
         // Lock start position
         column->MinX = offset_x;
 
         // Lock width based on start position and minimum/maximum width for this position
-        float max_width = TableGetMaxColumnWidth(table, column_n);
-        column->WidthGiven = ImMin(column->WidthGiven, max_width);
+        column->WidthMax = TableCalcMaxColumnWidth(table, column_n);
+        column->WidthGiven = ImMin(column->WidthGiven, column->WidthMax);
         column->WidthGiven = ImMax(column->WidthGiven, ImMin(column->WidthRequest, table->MinColumnWidth));
         column->MaxX = offset_x + column->WidthGiven + table->CellSpacingX1 + table->CellSpacingX2 + table->CellPaddingX * 2.0f;
 
@@ -1117,8 +1124,13 @@ void ImGui::TableUpdateLayout(ImGuiTable* table)
             column->Flags |= ImGuiTableColumnFlags_IsVisible;
         if (column->SortOrder != -1)
             column->Flags |= ImGuiTableColumnFlags_IsSorted;
-        if (table->HoveredColumnBody == column_n)
+
+        // Detect hovered column
+        if (is_hovering_table && mouse_skewed_x >= column->ClipRect.Min.x && mouse_skewed_x < column->ClipRect.Max.x)
+        {
             column->Flags |= ImGuiTableColumnFlags_IsHovered;
+            table->HoveredColumnBody = (ImGuiTableColumnIdx)column_n;
+        }
 
         // Alignment
         // FIXME-TABLE: This align based on the whole column width, not per-cell, and therefore isn't useful in
@@ -1249,7 +1261,7 @@ void ImGui::TableUpdateLayout(ImGuiTable* table)
     if (table->Flags & ImGuiTableFlags_NoClip)
         table->DrawSplitter->SetCurrentChannel(inner_window->DrawList, TABLE_DRAW_CHANNEL_NOCLIP);
     else
-        inner_window->DrawList->PushClipRect(inner_window->ClipRect.Min, inner_window->ClipRect.Max, false);
+        inner_window->DrawList->PushClipRect(inner_window->InnerClipRect.Min, inner_window->InnerClipRect.Max, false); // FIXME: use table->InnerClipRect?
 }
 
 // Process hit-testing on resizing borders. Actual size change will be applied in EndTable()
@@ -1999,7 +2011,7 @@ void ImGui::TableEndRow(ImGuiTable* table)
     {
         for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
             table->Columns[column_n].NavLayerCurrent = ImGuiNavLayer_Main;
-        const float y0 = ImMax(table->RowPosY2 + 1, window->InnerClipRect.Min.y);
+        const float y0 = ImMax(table->RowPosY2 + 1, table->InnerClipRect.Min.y);
         table_instance->LastFrozenHeight = y0 - table->OuterRect.Min.y;
 
         if (unfreeze_rows_actual)
@@ -2008,8 +2020,8 @@ void ImGui::TableEndRow(ImGuiTable* table)
             table->IsUnfrozenRows = true;
 
             // BgClipRect starts as table->InnerClipRect, reduce it now and make BgClipRectForDrawCmd == BgClipRect
-            table->BgClipRect.Min.y = table->Bg2ClipRectForDrawCmd.Min.y = ImMin(y0, window->InnerClipRect.Max.y);
-            table->BgClipRect.Max.y = table->Bg2ClipRectForDrawCmd.Max.y = window->InnerClipRect.Max.y;
+            table->BgClipRect.Min.y = table->Bg2ClipRectForDrawCmd.Min.y = ImMin(y0, table->InnerClipRect.Max.y);
+            table->BgClipRect.Max.y = table->Bg2ClipRectForDrawCmd.Max.y = table->InnerClipRect.Max.y;
             table->Bg2DrawChannelCurrent = table->Bg2DrawChannelUnfrozen;
             IM_ASSERT(table->Bg2ClipRectForDrawCmd.Min.y <= table->Bg2ClipRectForDrawCmd.Max.y);
 
@@ -2195,8 +2207,8 @@ void ImGui::TableEndCell(ImGuiTable* table)
 // Note that actual columns widths are computed in TableUpdateLayout().
 //-------------------------------------------------------------------------
 
-// Maximum column content width given current layout. Use column->MinX so this value on a per-column basis.
-float ImGui::TableGetMaxColumnWidth(const ImGuiTable* table, int column_n)
+// Maximum column content width given current layout. Use column->MinX so this value differs on a per-column basis.
+float ImGui::TableCalcMaxColumnWidth(const ImGuiTable* table, int column_n)
 {
     const ImGuiTableColumn* column = &table->Columns[column_n];
     float max_width = FLT_MAX;
@@ -2258,7 +2270,7 @@ void ImGui::TableSetColumnWidth(int column_n, float width)
     // Compare both requested and actual given width to avoid overwriting requested width when column is stuck (minimum size, bounded)
     IM_ASSERT(table->MinColumnWidth > 0.0f);
     const float min_width = table->MinColumnWidth;
-    const float max_width = ImMax(min_width, TableGetMaxColumnWidth(table, column_n));
+    const float max_width = ImMax(min_width, column_0->WidthMax); // Don't use TableCalcMaxColumnWidth() here as it would rely on MinX from last instance (#7933)
     column_0_width = ImClamp(column_0_width, min_width, max_width);
     if (column_0->WidthGiven == column_0_width || column_0->WidthRequest == column_0_width)
         return;
@@ -2743,7 +2755,7 @@ void ImGui::TableDrawBorders(ImGuiTable* table)
         const ImU32 outer_col = table->BorderColorStrong;
         if ((table->Flags & ImGuiTableFlags_BordersOuter) == ImGuiTableFlags_BordersOuter)
         {
-            inner_drawlist->AddRect(outer_border.Min, outer_border.Max + ImVec2(1, 1), outer_col, 0.0f, 0, border_size);
+            inner_drawlist->AddRect(outer_border.Min, outer_border.Max, outer_col, 0.0f, 0, border_size);
         }
         else if (table->Flags & ImGuiTableFlags_BordersOuterV)
         {
@@ -3007,7 +3019,8 @@ float ImGui::TableGetHeaderAngledMaxLabelWidth()
 // The intent is that advanced users willing to create customized headers would not need to use this helper
 // and can create their own! For example: TableHeader() may be preceded by Checkbox() or other custom widgets.
 // See 'Demo->Tables->Custom headers' for a demonstration of implementing a custom version of this.
-// This code is constructed to not make much use of internal functions, as it is intended to be a template to copy.
+// This code is intentionally written to not make much use of internal functions, to give you better direction
+// if you need to write your own.
 // FIXME-TABLE: TableOpenContextMenu() and TableGetHeaderRowHeight() are not public.
 void ImGui::TableHeadersRow()
 {
@@ -3015,7 +3028,8 @@ void ImGui::TableHeadersRow()
     ImGuiTable* table = g.CurrentTable;
     IM_ASSERT(table != NULL && "Need to call TableHeadersRow() after BeginTable()!");
 
-    // Layout if not already done (this is automatically done by TableNextRow, we do it here solely to facilitate stepping in debugger as it is frequent to step in TableUpdateLayout)
+    // Call layout if not already done. This is automatically done by TableNextRow: we do it here _only_ to make
+    // it easier to debug-step in TableUpdateLayout(). Your own version of this function doesn't need this.
     if (!table->IsLayoutLocked)
         TableUpdateLayout(table);
 
@@ -3032,8 +3046,7 @@ void ImGui::TableHeadersRow()
         if (!TableSetColumnIndex(column_n))
             continue;
 
-        // Push an id to allow unnamed labels (generally accidental, but let's behave nicely with them)
-        // In your own code you may omit the PushID/PopID all-together, provided you know they won't collide.
+        // Push an id to allow empty/unnamed headers. This is also idiomatic as it ensure there is a consistent ID path to access columns (for e.g. automation)
         const char* name = (TableGetColumnFlags(column_n) & ImGuiTableColumnFlags_NoHeaderLabel) ? "" : TableGetColumnName(column_n);
         PushID(column_n);
         TableHeader(name);
@@ -4396,7 +4409,7 @@ void ImGui::EndColumns()
             {
                 ButtonBehavior(column_hit_rect, column_id, &hovered, &held);
                 if (hovered || held)
-                    g.MouseCursor = ImGuiMouseCursor_ResizeEW;
+                    SetMouseCursor(ImGuiMouseCursor_ResizeEW);
                 if (held && !(column->Flags & ImGuiOldColumnFlags_NoResize))
                     dragging_column = n;
             }
@@ -4428,12 +4441,12 @@ void ImGui::EndColumns()
     NavUpdateCurrentWindowIsScrollPushableX();
 }
 
-void ImGui::Columns(int columns_count, const char* id, bool border)
+void ImGui::Columns(int columns_count, const char* id, bool borders)
 {
     ImGuiWindow* window = GetCurrentWindow();
     IM_ASSERT(columns_count >= 1);
 
-    ImGuiOldColumnFlags flags = (border ? 0 : ImGuiOldColumnFlags_NoBorder);
+    ImGuiOldColumnFlags flags = (borders ? 0 : ImGuiOldColumnFlags_NoBorder);
     //flags |= ImGuiOldColumnFlags_NoPreserveWidths; // NB: Legacy behavior
     ImGuiOldColumns* columns = window->DC.CurrentColumns;
     if (columns != NULL && columns->Count == columns_count && columns->Flags == flags)

imstb_textedit.h

@@ -3,6 +3,8 @@
 // Those changes would need to be pushed into nothings/stb:
 // - Fix in stb_textedit_discard_redo (see https://github.com/nothings/stb/issues/321)
 // - Fix in stb_textedit_find_charpos to handle last line (see https://github.com/ocornut/imgui/issues/6000 + #6783)
+// - Added name to struct or it may be forward declared in our code.
+// - Added UTF-8 support (see https://github.com/nothings/stb/issues/188 + https://github.com/ocornut/imgui/pull/7925)
 // Grep for [DEAR IMGUI] to find the changes.
 // - Also renamed macros used or defined outside of IMSTB_TEXTEDIT_IMPLEMENTATION block from STB_TEXTEDIT_* to IMSTB_TEXTEDIT_*
 
@@ -209,6 +211,7 @@
 //    int  stb_textedit_cut(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
 //    int  stb_textedit_paste(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXTEDIT_CHARTYPE *text, int len)
 //    void stb_textedit_key(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXEDIT_KEYTYPE key)
+//    void stb_textedit_text(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXTEDIT_CHARTYPE *text, int text_len)
 //
 //    Each of these functions potentially updates the string and updates the
 //    state.
@@ -243,7 +246,12 @@
 //          various definitions like STB_TEXTEDIT_K_LEFT have the is-key-event bit
 //          set, and make STB_TEXTEDIT_KEYTOCHAR check that the is-key-event bit is
 //          clear. STB_TEXTEDIT_KEYTYPE defaults to int, but you can #define it to
-//          anything other type you wante before including.
+//          anything other type you want before including.
+//          if the STB_TEXTEDIT_KEYTOTEXT function is defined, selected keys are
+//          transformed into text and stb_textedit_text() is automatically called.
+//
+//      text: [DEAR IMGUI] added 2024-09
+//          call this to text inputs sent to the textfield.
 //
 //
 //   When rendering, you can read the cursor position and selection state from
@@ -318,7 +326,7 @@ typedef struct
    int undo_char_point, redo_char_point;
 } StbUndoState;
 
-typedef struct
+typedef struct STB_TexteditState
 {
    /////////////////////
    //
@@ -438,13 +446,13 @@ static int stb_text_locate_coord(IMSTB_TEXTEDIT_STRING *str, float x, float y)
    if (x < r.x1) {
       // search characters in row for one that straddles 'x'
       prev_x = r.x0;
-      for (k=0; k < r.num_chars; ++k) {
+      for (k=0; k < r.num_chars; k = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, i + k) - i) {
          float w = STB_TEXTEDIT_GETWIDTH(str, i, k);
          if (x < prev_x+w) {
             if (x < prev_x+w/2)
                return k+i;
             else
-               return k+i+1;
+               return IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, i + k);
          }
          prev_x += w;
       }
@@ -563,7 +571,7 @@ static void stb_textedit_find_charpos(StbFindState *find, IMSTB_TEXTEDIT_STRING
 
    // now scan to find xpos
    find->x = r.x0;
-   for (i=0; first+i < n; ++i)
+   for (i=0; first+i < n; i = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, first + i) - first)
       find->x += STB_TEXTEDIT_GETWIDTH(str, first, i);
 }
 
@@ -640,6 +648,17 @@ static void stb_textedit_move_to_last(IMSTB_TEXTEDIT_STRING *str, STB_TexteditSt
    }
 }
 
+// [DEAR IMGUI]
+// Functions must be implemented for UTF8 support
+// Code in this file that uses those functions is modified for [DEAR IMGUI] and deviates from the original stb_textedit.
+// There is not necessarily a '[DEAR IMGUI]' at the usage sites.
+#ifndef IMSTB_TEXTEDIT_GETPREVCHARINDEX
+#define IMSTB_TEXTEDIT_GETPREVCHARINDEX(obj, idx) (idx - 1)
+#endif
+#ifndef IMSTB_TEXTEDIT_GETNEXTCHARINDEX
+#define IMSTB_TEXTEDIT_GETNEXTCHARINDEX(obj, idx) (idx + 1)
+#endif
+
 #ifdef STB_TEXTEDIT_IS_SPACE
 static int is_word_boundary( IMSTB_TEXTEDIT_STRING *str, int idx )
 {
@@ -720,36 +739,44 @@ static int stb_textedit_paste_internal(IMSTB_TEXTEDIT_STRING *str, STB_TexteditS
 #define STB_TEXTEDIT_KEYTYPE int
 #endif
 
+// [DEAR IMGUI] Added stb_textedit_text(), extracted out and called by stb_textedit_key() for backward compatibility.
+static void stb_textedit_text(IMSTB_TEXTEDIT_STRING* str, STB_TexteditState* state, const IMSTB_TEXTEDIT_CHARTYPE* text, int text_len)
+{
+   // can't add newline in single-line mode
+   if (text[0] == '\n' && state->single_line)
+      return;
+
+   if (state->insert_mode && !STB_TEXT_HAS_SELECTION(state) && state->cursor < STB_TEXTEDIT_STRINGLEN(str)) {
+      stb_text_makeundo_replace(str, state, state->cursor, 1, 1);
+      STB_TEXTEDIT_DELETECHARS(str, state->cursor, 1);
+      if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, text, text_len)) {
+         state->cursor += text_len;
+         state->has_preferred_x = 0;
+      }
+   }
+   else {
+      stb_textedit_delete_selection(str, state); // implicitly clamps
+      if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, text, text_len)) {
+         stb_text_makeundo_insert(state, state->cursor, text_len);
+         state->cursor += text_len;
+         state->has_preferred_x = 0;
+      }
+   }
+}
+
 // API key: process a keyboard input
 static void stb_textedit_key(IMSTB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXTEDIT_KEYTYPE key)
 {
 retry:
    switch (key) {
       default: {
+#ifdef STB_TEXTEDIT_KEYTOTEXT
          int c = STB_TEXTEDIT_KEYTOTEXT(key);
          if (c > 0) {
-            IMSTB_TEXTEDIT_CHARTYPE ch = (IMSTB_TEXTEDIT_CHARTYPE) c;
-
-            // can't add newline in single-line mode
-            if (c == '\n' && state->single_line)
-               break;
-
-            if (state->insert_mode && !STB_TEXT_HAS_SELECTION(state) && state->cursor < STB_TEXTEDIT_STRINGLEN(str)) {
-               stb_text_makeundo_replace(str, state, state->cursor, 1, 1);
-               STB_TEXTEDIT_DELETECHARS(str, state->cursor, 1);
-               if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, &ch, 1)) {
-                  ++state->cursor;
-                  state->has_preferred_x = 0;
-               }
-            } else {
-               stb_textedit_delete_selection(str,state); // implicitly clamps
-               if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, &ch, 1)) {
-                  stb_text_makeundo_insert(state, state->cursor, 1);
-                  ++state->cursor;
-                  state->has_preferred_x = 0;
-               }
-            }
+            IMSTB_TEXTEDIT_CHARTYPE ch = (IMSTB_TEXTEDIT_CHARTYPE)c;
+            stb_textedit_text(str, state, &ch, 1);
          }
+#endif
          break;
       }
 
@@ -775,7 +802,7 @@ retry:
             stb_textedit_move_to_first(state);
          else
             if (state->cursor > 0)
-               --state->cursor;
+               state->cursor = IMSTB_TEXTEDIT_GETPREVCHARINDEX(str, state->cursor);
          state->has_preferred_x = 0;
          break;
 
@@ -784,7 +811,7 @@ retry:
          if (STB_TEXT_HAS_SELECTION(state))
             stb_textedit_move_to_last(str, state);
          else
-            ++state->cursor;
+            state->cursor = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->cursor);
          stb_textedit_clamp(str, state);
          state->has_preferred_x = 0;
          break;
@@ -794,7 +821,7 @@ retry:
          stb_textedit_prep_selection_at_cursor(state);
          // move selection left
          if (state->select_end > 0)
-            --state->select_end;
+            state->select_end = IMSTB_TEXTEDIT_GETPREVCHARINDEX(str, state->select_end);
          state->cursor = state->select_end;
          state->has_preferred_x = 0;
          break;
@@ -844,7 +871,7 @@ retry:
       case STB_TEXTEDIT_K_RIGHT | STB_TEXTEDIT_K_SHIFT:
          stb_textedit_prep_selection_at_cursor(state);
          // move selection right
-         ++state->select_end;
+         state->select_end = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->select_end);
          stb_textedit_clamp(str, state);
          state->cursor = state->select_end;
          state->has_preferred_x = 0;
@@ -900,7 +927,7 @@ retry:
                x += dx;
                if (x > goal_x)
                   break;
-               ++state->cursor;
+               state->cursor = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->cursor);
             }
             stb_textedit_clamp(str, state);
 
@@ -962,7 +989,7 @@ retry:
                x += dx;
                if (x > goal_x)
                   break;
-               ++state->cursor;
+               state->cursor = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->cursor);
             }
             stb_textedit_clamp(str, state);
 
@@ -990,7 +1017,7 @@ retry:
          else {
             int n = STB_TEXTEDIT_STRINGLEN(str);
             if (state->cursor < n)
-               stb_textedit_delete(str, state, state->cursor, 1);
+               stb_textedit_delete(str, state, state->cursor, IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->cursor) - state->cursor);
          }
          state->has_preferred_x = 0;
          break;
@@ -1002,8 +1029,9 @@ retry:
          else {
             stb_textedit_clamp(str, state);
             if (state->cursor > 0) {
-               stb_textedit_delete(str, state, state->cursor-1, 1);
-               --state->cursor;
+               int prev = IMSTB_TEXTEDIT_GETPREVCHARINDEX(str, state->cursor);
+               stb_textedit_delete(str, state, prev, state->cursor - prev);
+               state->cursor = prev;
             }
          }
          state->has_preferred_x = 0;

misc/freetype/imgui_freetype.cpp

@@ -480,8 +480,9 @@ bool ImFontAtlasBuildWithFreeTypeEx(FT_Library ft_library, ImFontAtlas* atlas, u
         for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
         {
             // Check for valid range. This may also help detect *some* dangling pointers, because a common
-            // user error is to setup ImFontConfig::GlyphRanges with a pointer to data that isn't persistent.
-            IM_ASSERT(src_range[0] <= src_range[1]);
+            // user error is to setup ImFontConfig::GlyphRanges with a pointer to data that isn't persistent,
+            // or to forget to zero-terminate the glyph range array.
+            IM_ASSERT(src_range[0] <= src_range[1] && "Invalid range: is your glyph range array persistent? it is zero-terminated?");
             src_tmp.GlyphsHighest = ImMax(src_tmp.GlyphsHighest, (int)src_range[1]);
         }
         dst_tmp.SrcCount++;