Merge branch 'master' into docking

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

.github/FUNDING.yml

@@ -1 +1 @@
-custom: ['https://github.com/ocornut/imgui/wiki/Sponsors']
+custom: ['https://github.com/ocornut/imgui/wiki/Funding']

.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

.gitignore

@@ -3,6 +3,7 @@
 
 ## Dear ImGui artifacts
 imgui.ini
+imgui*.ini
 
 ## General build artifacts
 *.o

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).
@@ -63,8 +66,8 @@
 #ifdef _WIN32
 #include <allegro5/allegro_windows.h>
 #endif
-#define ALLEGRO_HAS_CLIPBOARD           (ALLEGRO_VERSION_INT >= ((5 << 24) | (1 << 16) | (12 << 8))) // Clipboard only supported from Allegro 5.1.12
-#define ALLEGRO_HAS_DRAW_INDEXED_PRIM   (ALLEGRO_VERSION_INT >= ((5 << 24) | (2 << 16) | ( 5 << 8))) // DX9 implementation of al_draw_indexed_prim() got fixed in Allegro 5.2.5
+#define ALLEGRO_HAS_CLIPBOARD           ((ALLEGRO_VERSION_INT & ~ALLEGRO_UNSTABLE_BIT) >= ((5 << 24) | (1 << 16) | (12 << 8))) // Clipboard only supported from Allegro 5.1.12
+#define ALLEGRO_HAS_DRAW_INDEXED_PRIM   ((ALLEGRO_VERSION_INT & ~ALLEGRO_UNSTABLE_BIT) >= ((5 << 24) | (2 << 16) | ( 5 << 8))) // DX9 implementation of al_draw_indexed_prim() got fixed in Allegro 5.2.5
 
 // Visual Studio warnings
 #ifdef _MSC_VER
@@ -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_allegro5.h

@@ -26,6 +26,7 @@
 struct ALLEGRO_DISPLAY;
 union ALLEGRO_EVENT;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplAllegro5_Init(ALLEGRO_DISPLAY* display);
 IMGUI_IMPL_API void     ImGui_ImplAllegro5_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplAllegro5_NewFrame();

backends/imgui_impl_android.h

@@ -29,6 +29,7 @@
 struct ANativeWindow;
 struct AInputEvent;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplAndroid_Init(ANativeWindow* window);
 IMGUI_IMPL_API int32_t  ImGui_ImplAndroid_HandleInputEvent(const AInputEvent* input_event);
 IMGUI_IMPL_API void     ImGui_ImplAndroid_Shutdown();

backends/imgui_impl_dx10.h

@@ -20,6 +20,7 @@
 
 struct ID3D10Device;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplDX10_Init(ID3D10Device* device);
 IMGUI_IMPL_API void     ImGui_ImplDX10_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplDX10_NewFrame();

backends/imgui_impl_dx11.h

@@ -21,6 +21,7 @@
 struct ID3D11Device;
 struct ID3D11DeviceContext;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplDX11_Init(ID3D11Device* device, ID3D11DeviceContext* device_context);
 IMGUI_IMPL_API void     ImGui_ImplDX11_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplDX11_NewFrame();

backends/imgui_impl_dx12.h

@@ -28,6 +28,8 @@ struct ID3D12GraphicsCommandList;
 struct D3D12_CPU_DESCRIPTOR_HANDLE;
 struct D3D12_GPU_DESCRIPTOR_HANDLE;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
+
 // cmd_list is the command list that the implementation will use to render imgui draw lists.
 // Before calling the render function, caller must prepare cmd_list by resetting it and setting the appropriate
 // render target and descriptor heap that contains font_srv_cpu_desc_handle/font_srv_gpu_desc_handle.

backends/imgui_impl_dx9.h

@@ -20,6 +20,7 @@
 
 struct IDirect3DDevice9;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplDX9_Init(IDirect3DDevice9* device);
 IMGUI_IMPL_API void     ImGui_ImplDX9_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplDX9_NewFrame();

backends/imgui_impl_glfw.cpp

@@ -21,9 +21,22 @@
 // - 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.
 //  2023-12-19: Emscripten: Added ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback() to register canvas selector and auto-resize GLFW window.
 //  2023-10-05: Inputs: Added support for extra ImGuiKey values: F13 to F24 function keys.
 //  2023-07-18: Inputs: Revert ignoring mouse data on GLFW_CURSOR_DISABLED as it can be used differently. User may set ImGuiConfigFLags_NoMouse if desired. (#5625, #6609)
@@ -101,10 +114,18 @@
 #endif
 #include <GLFW/glfw3native.h>   // for glfwGetCocoaWindow()
 #endif
+#ifndef _WIN32
+#include <unistd.h>             // for usleep()
+#endif
 
 #ifdef __EMSCRIPTEN__
 #include <emscripten.h>
 #include <emscripten/html5.h>
+#ifdef EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3
+#include <GLFW/emscripten_glfw3.h>
+#else
+#define EMSCRIPTEN_USE_EMBEDDED_GLFW3
+#endif
 #endif
 
 // We gather version tests as define in order to easily see which features are version-dependent.
@@ -156,7 +177,7 @@ struct ImGui_ImplGlfw_Data
     bool                    InstalledCallbacks;
     bool                    CallbacksChainForAllWindows;
     bool                    WantUpdateMonitors;
-#ifdef __EMSCRIPTEN__
+#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3
     const char*             CanvasSelector;
 #endif
 
@@ -194,19 +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;
@@ -365,7 +379,7 @@ void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yo
     if (bd->PrevUserCallbackScroll != nullptr && ImGui_ImplGlfw_ShouldChainCallback(window))
         bd->PrevUserCallbackScroll(window, xoffset, yoffset);
 
-#ifdef __EMSCRIPTEN__
+#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3
     // Ignore GLFW events: will be processed in ImGui_ImplEmscripten_WheelCallback().
     return;
 #endif
@@ -374,9 +388,10 @@ 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__)
+#if GLFW_HAS_GETKEYNAME && !defined(EMSCRIPTEN_USE_EMBEDDED_GLFW3)
     // GLFW 3.1+ attempts to "untranslate" keys, which goes the opposite of what every other framework does, making using lettered shortcuts difficult.
     // (It had reasons to do so: namely GLFW is/was more likely to be used for WASD-type game controls rather than lettered shortcuts, but IHMO the 3.1 change could have been done differently)
     // See https://github.com/glfw/glfw/issues/1502 for details.
@@ -387,7 +402,7 @@ static int ImGui_ImplGlfw_TranslateUntranslatedKey(int key, int scancode)
     GLFWerrorfun prev_error_callback = glfwSetErrorCallback(nullptr);
     const char* key_name = glfwGetKeyName(key, scancode);
     glfwSetErrorCallback(prev_error_callback);
-#if GLFW_HAS_GETERROR && !defined(__EMSCRIPTEN__) // Eat errors (see #5908)
+#if GLFW_HAS_GETERROR && !defined(EMSCRIPTEN_USE_EMBEDDED_GLFW3) // Eat errors (see #5908)
     (void)glfwGetError(nullptr);
 #endif
     if (key_name && key_name[0] != 0 && key_name[1] == 0)
@@ -424,7 +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)
 }
@@ -495,7 +510,7 @@ void ImGui_ImplGlfw_MonitorCallback(GLFWmonitor*, int)
     bd->WantUpdateMonitors = true;
 }
 
-#ifdef __EMSCRIPTEN__
+#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3
 static EM_BOOL ImGui_ImplEmscripten_WheelCallback(int, const EmscriptenWheelEvent* ev, void*)
 {
     // Mimic Emscripten_HandleWheel() in SDL.
@@ -569,6 +584,14 @@ void ImGui_ImplGlfw_SetCallbacksChainForAllWindows(bool chain_for_all_windows)
     bd->CallbacksChainForAllWindows = chain_for_all_windows;
 }
 
+#ifdef __EMSCRIPTEN__
+#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)
 {
     ImGuiIO& io = ImGui::GetIO();
@@ -593,9 +616,12 @@ 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__
+    platform_io.Platform_OpenInShellFn = [](ImGuiContext*, const char* url) { ImGui_ImplGlfw_EmscriptenOpenURL(url); return true; };
+#endif
 
     // Create mouse cursors
     // (By design, on X11 cursors are user configurable and some cursors may be missing. When a cursor doesn't exist,
@@ -626,14 +652,9 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
     // Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
     if (install_callbacks)
         ImGui_ImplGlfw_InstallCallbacks(window);
-    // Register Emscripten Wheel callback to workaround issue in Emscripten GLFW Emulation (#6096)
-    // We intentionally do not check 'if (install_callbacks)' here, as some users may set it to false and call GLFW callback themselves.
-    // FIXME: May break chaining in case user registered their own Emscripten callback?
-#ifdef __EMSCRIPTEN__
-    emscripten_set_wheel_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, nullptr, false, ImGui_ImplEmscripten_WheelCallback);
-#endif
 
-    // 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);
 
@@ -657,6 +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;
 }
@@ -686,8 +724,9 @@ void ImGui_ImplGlfw_Shutdown()
 
     if (bd->InstalledCallbacks)
         ImGui_ImplGlfw_RestoreCallbacks(bd->Window);
-#ifdef __EMSCRIPTEN__
-    emscripten_set_wheel_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, nullptr, false, nullptr);
+#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3
+    if (bd->CanvasSelector)
+        emscripten_set_wheel_callback(bd->CanvasSelector, nullptr, false, nullptr);
 #endif
 
     for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
@@ -719,7 +758,7 @@ static void ImGui_ImplGlfw_UpdateMouseData()
         ImGuiViewport* viewport = platform_io.Viewports[n];
         GLFWwindow* window = (GLFWwindow*)viewport->PlatformHandle;
 
-#ifdef __EMSCRIPTEN__
+#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3
         const bool is_window_focused = true;
 #else
         const bool is_window_focused = glfwGetWindowAttrib(window, GLFW_FOCUSED) != 0;
@@ -813,7 +852,7 @@ static void ImGui_ImplGlfw_UpdateGamepads()
         return;
 
     io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
-#if GLFW_HAS_GAMEPAD_API && !defined(__EMSCRIPTEN__)
+#if GLFW_HAS_GAMEPAD_API && !defined(EMSCRIPTEN_USE_EMBEDDED_GLFW3)
     GLFWgamepadstate gamepad;
     if (!glfwGetGamepadState(GLFW_JOYSTICK_1, &gamepad))
         return;
@@ -892,6 +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"
@@ -931,7 +972,17 @@ void ImGui_ImplGlfw_NewFrame()
     ImGui_ImplGlfw_UpdateGamepads();
 }
 
-#ifdef __EMSCRIPTEN__
+// 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)
 {
     ImGui_ImplGlfw_Data* bd = (ImGui_ImplGlfw_Data*)user_data;
@@ -952,7 +1003,7 @@ static EM_BOOL ImGui_ImplEmscripten_FullscreenChangeCallback(int event_type, con
 
 // 'canvas_selector' is a CSS selector. The event listener is applied to the first element that matches the query.
 // STRING MUST PERSIST FOR THE APPLICATION DURATION. PLEASE USE A STRING LITERAL OR ENSURE POINTER WILL STAY VALID.
-void ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback(const char* canvas_selector)
+void ImGui_ImplGlfw_InstallEmscriptenCallbacks(GLFWwindow*, const char* canvas_selector)
 {
     IM_ASSERT(canvas_selector != nullptr);
     ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
@@ -964,8 +1015,24 @@ void ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback(const char* canvas_sel
 
     // Change the size of the GLFW window according to the size of the canvas
     ImGui_ImplGlfw_OnCanvasSizeChange(EMSCRIPTEN_EVENT_RESIZE, {}, bd);
+
+    // Register Emscripten Wheel callback to workaround issue in Emscripten GLFW Emulation (#6096)
+    // We intentionally do not check 'if (install_callbacks)' here, as some users may set it to false and call GLFW callback themselves.
+    // FIXME: May break chaining in case user registered their own Emscripten callback?
+    emscripten_set_wheel_callback(bd->CanvasSelector, nullptr, false, ImGui_ImplEmscripten_WheelCallback);
 }
-#endif
+#elif defined(EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3)
+// When using --use-port=contrib.glfw3 for the GLFW implementation, you can override the behavior of this call
+// by invoking emscripten_glfw_make_canvas_resizable afterward.
+// See https://github.com/pongasoft/emscripten-glfw/blob/master/docs/Usage.md#how-to-make-the-canvas-resizable-by-the-user for an explanation
+void ImGui_ImplGlfw_InstallEmscriptenCallbacks(GLFWwindow* window, const char* canvas_selector)
+{
+  GLFWwindow* w = (GLFWwindow*)(EM_ASM_INT({ return Module.glfwGetWindow(UTF8ToString($0)); }, canvas_selector));
+  IM_ASSERT(window == w); // Sanity check
+  IM_UNUSED(w);
+  emscripten_glfw_make_canvas_resizable(window, "window", nullptr);
+}
+#endif // #ifdef EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3
 
 
 //--------------------------------------------------------------------------------------------------------

backends/imgui_impl_glfw.h

@@ -28,15 +28,17 @@
 struct GLFWwindow;
 struct GLFWmonitor;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForOpenGL(GLFWwindow* window, bool install_callbacks);
 IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool install_callbacks);
 IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForOther(GLFWwindow* window, bool install_callbacks);
 IMGUI_IMPL_API void     ImGui_ImplGlfw_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplGlfw_NewFrame();
 
-// Emscripten related initialization phase methods
+// Emscripten related initialization phase methods (call after ImGui_ImplGlfw_InitForOpenGL)
 #ifdef __EMSCRIPTEN__
-IMGUI_IMPL_API void     ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback(const char* canvas_selector);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_InstallEmscriptenCallbacks(GLFWwindow* window, const char* canvas_selector);
+//static inline void    ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback(const char* canvas_selector) { ImGui_ImplGlfw_InstallEmscriptenCallbacks(nullptr, canvas_selector); } } // Renamed in 1.91.0
 #endif
 
 // GLFW callbacks install
@@ -59,4 +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_glut.h

@@ -26,6 +26,7 @@
 #ifndef IMGUI_DISABLE
 #include "imgui.h"      // IMGUI_IMPL_API
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplGLUT_Init();
 IMGUI_IMPL_API void     ImGui_ImplGLUT_InstallFuncs();
 IMGUI_IMPL_API void     ImGui_ImplGLUT_Shutdown();

backends/imgui_impl_metal.h

@@ -26,6 +26,7 @@
 @class MTLRenderPassDescriptor;
 @protocol MTLDevice, MTLCommandBuffer, MTLRenderCommandEncoder;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool ImGui_ImplMetal_Init(id<MTLDevice> device);
 IMGUI_IMPL_API void ImGui_ImplMetal_Shutdown();
 IMGUI_IMPL_API void ImGui_ImplMetal_NewFrame(MTLRenderPassDescriptor* renderPassDescriptor);
@@ -52,6 +53,7 @@ IMGUI_IMPL_API void ImGui_ImplMetal_DestroyDeviceObjects();
 #include <Metal/Metal.hpp>
 #ifndef __OBJC__
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool ImGui_ImplMetal_Init(MTL::Device* device);
 IMGUI_IMPL_API void ImGui_ImplMetal_Shutdown();
 IMGUI_IMPL_API void ImGui_ImplMetal_NewFrame(MTL::RenderPassDescriptor* renderPassDescriptor);

backends/imgui_impl_opengl2.cpp

@@ -24,6 +24,7 @@
 // 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.
+//  2024-06-28: OpenGL: ImGui_ImplOpenGL2_NewFrame() recreates font texture if it has been destroyed by ImGui_ImplOpenGL2_DestroyFontsTexture(). (#7748)
 //  2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
 //  2021-12-08: OpenGL: Fixed mishandling of the ImDrawCmd::IdxOffset field! This is an old bug but it never had an effect until some internal rendering changes in 1.86.
 //  2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
@@ -125,6 +126,8 @@ void    ImGui_ImplOpenGL2_NewFrame()
 
     if (!bd->FontTexture)
         ImGui_ImplOpenGL2_CreateDeviceObjects();
+    if (!bd->FontTexture)
+        ImGui_ImplOpenGL2_CreateFontsTexture();
 }
 
 static void ImGui_ImplOpenGL2_SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height)

backends/imgui_impl_opengl2.h

@@ -25,6 +25,7 @@
 #include "imgui.h"      // IMGUI_IMPL_API
 #ifndef IMGUI_DISABLE
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplOpenGL2_Init();
 IMGUI_IMPL_API void     ImGui_ImplOpenGL2_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplOpenGL2_NewFrame();

backends/imgui_impl_opengl3.cpp

@@ -24,6 +24,7 @@
 // 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.
+//  2024-06-28: OpenGL: ImGui_ImplOpenGL3_NewFrame() recreates font texture if it has been destroyed by ImGui_ImplOpenGL3_DestroyFontsTexture(). (#7748)
 //  2024-05-07: OpenGL: Update loader for Linux to support EGL/GLVND. (#7562)
 //  2024-04-16: OpenGL: Detect ES3 contexts on desktop based on version string, to e.g. avoid calling glPolygonMode() on them. (#7447)
 //  2024-01-09: OpenGL: Update GL3W based imgui_impl_opengl3_loader.h to load "libGL.so" and variants, fixing regression on distros missing a symlink.
@@ -125,6 +126,7 @@
 // Clang/GCC warnings with -Weverything
 #if defined(__clang__)
 #pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunknown-warning-option" // warning: ignore unknown flags
 #pragma clang diagnostic ignored "-Wold-style-cast"         // warning: use of old-style cast
 #pragma clang diagnostic ignored "-Wsign-conversion"        // warning: implicit conversion changes signedness
 #pragma clang diagnostic ignored "-Wunused-macros"          // warning: macro is not used
@@ -413,6 +415,8 @@ void    ImGui_ImplOpenGL3_NewFrame()
 
     if (!bd->ShaderHandle)
         ImGui_ImplOpenGL3_CreateDeviceObjects();
+    if (!bd->FontTexture)
+        ImGui_ImplOpenGL3_CreateFontsTexture();
 }
 
 static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height, GLuint vertex_array_object)

backends/imgui_impl_opengl3.h

@@ -30,7 +30,7 @@
 #include "imgui.h"      // IMGUI_IMPL_API
 #ifndef IMGUI_DISABLE
 
-// Backend API
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplOpenGL3_Init(const char* glsl_version = nullptr);
 IMGUI_IMPL_API void     ImGui_ImplOpenGL3_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplOpenGL3_NewFrame();

backends/imgui_impl_osx.h

@@ -31,6 +31,7 @@
 @class NSEvent;
 @class NSView;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplOSX_Init(NSView* _Nonnull view);
 IMGUI_IMPL_API void     ImGui_ImplOSX_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplOSX_NewFrame(NSView* _Nullable view);
@@ -45,6 +46,7 @@ IMGUI_IMPL_API void     ImGui_ImplOSX_NewFrame(NSView* _Nullable view);
 // #include <AppKit/AppKit.hpp>
 #ifndef __OBJC__
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplOSX_Init(void* _Nonnull view);
 IMGUI_IMPL_API void     ImGui_ImplOSX_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplOSX_NewFrame(void* _Nullable view);

backends/imgui_impl_osx.mm

@@ -34,6 +34,11 @@
 // 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.
 //  2023-02-01: Fixed scroll wheel scaling for devices emitting events with hasPreciseScrollingDeltas==false (e.g. non-Apple mices).
@@ -284,7 +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)
     {
@@ -422,6 +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!");
 
@@ -457,14 +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]];
@@ -499,7 +507,7 @@ bool ImGui_ImplOSX_Init(NSView* view)
     [view addSubview:bd->KeyEventResponder];
     ImGui_ImplOSX_AddTrackingArea(view);
 
-    io.SetPlatformImeDataFn = [](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)
@@ -918,7 +926,7 @@ static void ImGui_ImplOSX_CreateWindow(ImGuiViewport* viewport)
     window.opaque = YES;
 
     KeyEventResponder* view = [[KeyEventResponder alloc] initWithFrame:rect];
-    if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_6)
+    if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_6 && ceil(NSAppKitVersionNumber) < NSAppKitVersionNumber10_15)
         [view setWantsBestResolutionOpenGLSurface:YES];
 
     window.contentView = view;

backends/imgui_impl_sdl2.cpp

@@ -26,6 +26,16 @@
 // 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().
 //  2023-10-05: Inputs: Added support for extra ImGuiKey values: F13 to F24 function keys, app back/forward keys.
 //  2023-04-06: Inputs: Avoid calling SDL_StartTextInput()/SDL_StopTextInput() as they don't only pertain to IME. It's unclear exactly what their relation is to IME. (#6306)
@@ -96,9 +106,12 @@
 // (the multi-viewports feature requires SDL features supported from SDL 2.0.4+. SDL 2.0.5+ is highly recommended)
 #include <SDL.h>
 #include <SDL_syswm.h>
-#if defined(__APPLE__)
+#ifdef __APPLE__
 #include <TargetConditionals.h>
 #endif
+#ifdef __EMSCRIPTEN__
+#include <emscripten/em_js.h>
+#endif
 
 #if SDL_VERSION_ATLEAST(2,0,4) && !defined(__EMSCRIPTEN__) && !defined(__ANDROID__) && !(defined(__APPLE__) && TARGET_OS_IOS) && !defined(__amigaos4__)
 #define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE    1
@@ -111,7 +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
 
@@ -119,6 +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;
@@ -157,7 +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)
@@ -166,13 +183,13 @@ 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);
 }
 
 // Note: native IME will only display if user calls SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1") _before_ SDL_CreateWindow().
-static void ImGui_ImplSDL2_SetPlatformImeData(ImGuiViewport* viewport, ImGuiPlatformImeData* data)
+static void ImGui_ImplSDL2_PlatformSetImeData(ImGuiContext*, ImGuiViewport* viewport, ImGuiPlatformImeData* data)
 {
     if (data->WantVisible)
     {
@@ -185,8 +202,10 @@ static void ImGui_ImplSDL2_SetPlatformImeData(ImGuiViewport* viewport, ImGuiPlat
     }
 }
 
-static ImGuiKey ImGui_ImplSDL2_KeycodeToImGuiKey(int keycode)
+// 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)
     {
         case SDLK_TAB: return ImGuiKey_Tab;
@@ -308,6 +327,7 @@ static ImGuiKey ImGui_ImplSDL2_KeycodeToImGuiKey(int keycode)
         case SDLK_F24: return ImGuiKey_F24;
         case SDLK_AC_BACK: return ImGuiKey_AppBack;
         case SDLK_AC_FORWARD: return ImGuiKey_AppForward;
+        default: break;
     }
     return ImGuiKey_None;
 }
@@ -321,11 +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();
@@ -336,6 +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)
             {
@@ -350,6 +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;
@@ -368,6 +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; }
@@ -383,14 +413,18 @@ 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_KeycodeToImGuiKey(event->key.keysym.sym);
+            ImGuiKey key = ImGui_ImplSDL2_KeyEventToImGuiKey(event->key.keysym.sym, event->key.keysym.scancode);
             io.AddKeyEvent(key, (event->type == SDL_KEYDOWN));
             io.SetKeyEventNativeData(key, event->key.keysym.sym, event->key.keysym.scancode, event->key.keysym.scancode); // To support legacy indexing (<1.87 user code). Legacy backend uses SDLK_*** as indices to IsKeyXXX() functions.
             return true;
@@ -406,6 +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,
@@ -423,17 +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:
@@ -446,6 +479,10 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
     return false;
 }
 
+#ifdef __EMSCRIPTEN__
+EM_JS(void, ImGui_ImplSDL2_EmscriptenOpenURL, (char const* url), { url = url ? UTF8ToString(url) : null; if (url) window.open(url, '_blank'); });
+#endif
+
 static bool ImGui_ImplSDL2_Init(SDL_Window* window, SDL_Renderer* renderer, void* sdl_gl_context)
 {
     ImGuiIO& io = ImGui::GetIO();
@@ -473,6 +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)
@@ -483,12 +521,18 @@ 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.SetPlatformImeDataFn = ImGui_ImplSDL2_SetPlatformImeData;
+    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__
+    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;
@@ -508,7 +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);
@@ -623,7 +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
@@ -669,9 +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);
     }
 }
@@ -833,7 +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);
@@ -854,6 +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);
@@ -881,7 +932,7 @@ void ImGui_ImplSDL2_NewFrame()
     }
 
     // Our io.AddMouseViewportEvent() calls will only be valid when not capturing.
-    // Technically speaking testing for 'bd->MouseButtonsDown == 0' would be more rygorous, but testing for payload reduces noise and potential side-effects.
+    // Technically speaking testing for 'bd->MouseButtonsDown == 0' would be more rigorous, but testing for payload reduces noise and potential side-effects.
     if (bd->MouseCanReportHoveredViewport && ImGui::GetDragDropPayload() == nullptr)
         io.BackendFlags |= ImGuiBackendFlags_HasMouseHoveredViewport;
     else
@@ -954,7 +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);
@@ -998,7 +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)
     {
@@ -1006,7 +1061,6 @@ static void ImGui_ImplSDL2_ShowWindow(ImGuiViewport* viewport)
         return;
     }
 #endif
-
     SDL_ShowWindow(vd->Window);
 }
 
@@ -1133,7 +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_sdl2.h

@@ -31,6 +31,7 @@ struct SDL_Renderer;
 struct _SDL_GameController;
 typedef union SDL_Event SDL_Event;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplSDL2_InitForOpenGL(SDL_Window* window, void* sdl_gl_context);
 IMGUI_IMPL_API bool     ImGui_ImplSDL2_InitForVulkan(SDL_Window* window);
 IMGUI_IMPL_API bool     ImGui_ImplSDL2_InitForD3D(SDL_Window* window);

backends/imgui_impl_sdl3.cpp

@@ -1,7 +1,8 @@
 // dear imgui: Platform Backend for SDL3 (*EXPERIMENTAL*)
 // 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. IT IS POSSIBLE THAT ITS SPECS/API WILL CHANGE BEFORE RELEASE)
+
+// (**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.
@@ -12,8 +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).
-//  [ ] Platform: IME SUPPORT IS BROKEN IN SDL3 BECAUSE INPUTS GETS SENT TO BOTH APP AND IME + 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.
 // 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 +25,23 @@
 // 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)
+//  2024-07-02: Update for SDL3 api changes: SDLK_x renames and SDLK_KP_x removals (#7761, #7762).
+//  2024-07-01: Update for SDL3 api changes: SDL_SetTextInputRect() changed to SDL_SetTextInputArea().
+//  2024-06-26: Update for SDL3 api changes: SDL_StartTextInput()/SDL_StopTextInput()/SDL_SetTextInputRect() functions signatures.
+//  2024-06-24: Update for SDL3 api changes: SDL_EVENT_KEY_DOWN/SDL_EVENT_KEY_UP contents.
+//  2024-06-03; Update for SDL3 api changes: SDL_SYSTEM_CURSOR_ renames.
+//  2024-05-15: Update for SDL3 api changes: SDLK_ renames.
 //  2024-04-15: Inputs: Re-enable calling SDL_StartTextInput()/SDL_StopTextInput() as SDL3 no longer enables it by default and should play nicer with IME.
 //  2024-02-13: Inputs: Fixed gamepad support. Handle gamepad disconnection. Added ImGui_ImplSDL3_SetGamepadMode().
 //  2023-11-13: Updated for recent SDL3 API changes.
@@ -76,12 +92,16 @@
 struct ImGui_ImplSDL3_Data
 {
     SDL_Window*             Window;
+    SDL_WindowID            WindowID;
     SDL_Renderer*           Renderer;
     Uint64                  Time;
     char*                   ClipboardTextData;
     bool                    UseVulkan;
     bool                    WantUpdateMonitors;
 
+    // IME handling
+    SDL_Window*             ImeWindow;
+
     // Mouse handling
     Uint32                  MouseWindowID;
     int                     MouseButtonsDown;
@@ -114,22 +134,31 @@ 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)
         SDL_free(bd->ClipboardTextData);
-    bd->ClipboardTextData = SDL_GetClipboardText();
+    const char* sdl_clipboard_text = SDL_GetClipboardText();
+    bd->ClipboardTextData = sdl_clipboard_text ? SDL_strdup(sdl_clipboard_text) : NULL;
     return bd->ClipboardTextData;
 }
 
-static void ImGui_ImplSDL3_SetClipboardText(void*, const char* text)
+static void ImGui_ImplSDL3_SetClipboardText(ImGuiContext*, const char* text)
 {
     SDL_SetClipboardText(text);
 }
 
-static void ImGui_ImplSDL3_SetPlatformImeData(ImGuiViewport* viewport, ImGuiPlatformImeData* data)
+static void ImGui_ImplSDL3_PlatformSetImeData(ImGuiContext*, ImGuiViewport* viewport, ImGuiPlatformImeData* data)
 {
+    ImGui_ImplSDL3_Data* bd = ImGui_ImplSDL3_GetBackendData();
+    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);
+        bd->ImeWindow = nullptr;
+    }
     if (data->WantVisible)
     {
         SDL_Rect r;
@@ -137,17 +166,37 @@ static void ImGui_ImplSDL3_SetPlatformImeData(ImGuiViewport* viewport, ImGuiPlat
         r.y = (int)(data->InputPos.y - viewport->Pos.y + data->InputLineHeight);
         r.w = 1;
         r.h = (int)data->InputLineHeight;
-        SDL_SetTextInputRect(&r);
-        SDL_StartTextInput();
-    }
-    else
-    {
-        SDL_StopTextInput();
+        SDL_SetTextInputArea(window, &r, 0);
+        SDL_StartTextInput(window);
+        bd->ImeWindow = window;
     }
 }
 
-static ImGuiKey ImGui_ImplSDL3_KeycodeToImGuiKey(int keycode)
+// 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)
+    {
+        case SDL_SCANCODE_KP_0: return ImGuiKey_Keypad0;
+        case SDL_SCANCODE_KP_1: return ImGuiKey_Keypad1;
+        case SDL_SCANCODE_KP_2: return ImGuiKey_Keypad2;
+        case SDL_SCANCODE_KP_3: return ImGuiKey_Keypad3;
+        case SDL_SCANCODE_KP_4: return ImGuiKey_Keypad4;
+        case SDL_SCANCODE_KP_5: return ImGuiKey_Keypad5;
+        case SDL_SCANCODE_KP_6: return ImGuiKey_Keypad6;
+        case SDL_SCANCODE_KP_7: return ImGuiKey_Keypad7;
+        case SDL_SCANCODE_KP_8: return ImGuiKey_Keypad8;
+        case SDL_SCANCODE_KP_9: return ImGuiKey_Keypad9;
+        case SDL_SCANCODE_KP_PERIOD: return ImGuiKey_KeypadDecimal;
+        case SDL_SCANCODE_KP_DIVIDE: return ImGuiKey_KeypadDivide;
+        case SDL_SCANCODE_KP_MULTIPLY: return ImGuiKey_KeypadMultiply;
+        case SDL_SCANCODE_KP_MINUS: return ImGuiKey_KeypadSubtract;
+        case SDL_SCANCODE_KP_PLUS: return ImGuiKey_KeypadAdd;
+        case SDL_SCANCODE_KP_ENTER: return ImGuiKey_KeypadEnter;
+        case SDL_SCANCODE_KP_EQUALS: return ImGuiKey_KeypadEqual;
+        default: break;
+    }
     switch (keycode)
     {
         case SDLK_TAB: return ImGuiKey_Tab;
@@ -181,23 +230,6 @@ static ImGuiKey ImGui_ImplSDL3_KeycodeToImGuiKey(int keycode)
         case SDLK_NUMLOCKCLEAR: return ImGuiKey_NumLock;
         case SDLK_PRINTSCREEN: return ImGuiKey_PrintScreen;
         case SDLK_PAUSE: return ImGuiKey_Pause;
-        case SDLK_KP_0: return ImGuiKey_Keypad0;
-        case SDLK_KP_1: return ImGuiKey_Keypad1;
-        case SDLK_KP_2: return ImGuiKey_Keypad2;
-        case SDLK_KP_3: return ImGuiKey_Keypad3;
-        case SDLK_KP_4: return ImGuiKey_Keypad4;
-        case SDLK_KP_5: return ImGuiKey_Keypad5;
-        case SDLK_KP_6: return ImGuiKey_Keypad6;
-        case SDLK_KP_7: return ImGuiKey_Keypad7;
-        case SDLK_KP_8: return ImGuiKey_Keypad8;
-        case SDLK_KP_9: return ImGuiKey_Keypad9;
-        case SDLK_KP_PERIOD: return ImGuiKey_KeypadDecimal;
-        case SDLK_KP_DIVIDE: return ImGuiKey_KeypadDivide;
-        case SDLK_KP_MULTIPLY: return ImGuiKey_KeypadMultiply;
-        case SDLK_KP_MINUS: return ImGuiKey_KeypadSubtract;
-        case SDLK_KP_PLUS: return ImGuiKey_KeypadAdd;
-        case SDLK_KP_ENTER: return ImGuiKey_KeypadEnter;
-        case SDLK_KP_EQUALS: return ImGuiKey_KeypadEqual;
         case SDLK_LCTRL: return ImGuiKey_LeftCtrl;
         case SDLK_LSHIFT: return ImGuiKey_LeftShift;
         case SDLK_LALT: return ImGuiKey_LeftAlt;
@@ -217,32 +249,32 @@ static ImGuiKey ImGui_ImplSDL3_KeycodeToImGuiKey(int keycode)
         case SDLK_7: return ImGuiKey_7;
         case SDLK_8: return ImGuiKey_8;
         case SDLK_9: return ImGuiKey_9;
-        case SDLK_a: return ImGuiKey_A;
-        case SDLK_b: return ImGuiKey_B;
-        case SDLK_c: return ImGuiKey_C;
-        case SDLK_d: return ImGuiKey_D;
-        case SDLK_e: return ImGuiKey_E;
-        case SDLK_f: return ImGuiKey_F;
-        case SDLK_g: return ImGuiKey_G;
-        case SDLK_h: return ImGuiKey_H;
-        case SDLK_i: return ImGuiKey_I;
-        case SDLK_j: return ImGuiKey_J;
-        case SDLK_k: return ImGuiKey_K;
-        case SDLK_l: return ImGuiKey_L;
-        case SDLK_m: return ImGuiKey_M;
-        case SDLK_n: return ImGuiKey_N;
-        case SDLK_o: return ImGuiKey_O;
-        case SDLK_p: return ImGuiKey_P;
-        case SDLK_q: return ImGuiKey_Q;
-        case SDLK_r: return ImGuiKey_R;
-        case SDLK_s: return ImGuiKey_S;
-        case SDLK_t: return ImGuiKey_T;
-        case SDLK_u: return ImGuiKey_U;
-        case SDLK_v: return ImGuiKey_V;
-        case SDLK_w: return ImGuiKey_W;
-        case SDLK_x: return ImGuiKey_X;
-        case SDLK_y: return ImGuiKey_Y;
-        case SDLK_z: return ImGuiKey_Z;
+        case SDLK_A: return ImGuiKey_A;
+        case SDLK_B: return ImGuiKey_B;
+        case SDLK_C: return ImGuiKey_C;
+        case SDLK_D: return ImGuiKey_D;
+        case SDLK_E: return ImGuiKey_E;
+        case SDLK_F: return ImGuiKey_F;
+        case SDLK_G: return ImGuiKey_G;
+        case SDLK_H: return ImGuiKey_H;
+        case SDLK_I: return ImGuiKey_I;
+        case SDLK_J: return ImGuiKey_J;
+        case SDLK_K: return ImGuiKey_K;
+        case SDLK_L: return ImGuiKey_L;
+        case SDLK_M: return ImGuiKey_M;
+        case SDLK_N: return ImGuiKey_N;
+        case SDLK_O: return ImGuiKey_O;
+        case SDLK_P: return ImGuiKey_P;
+        case SDLK_Q: return ImGuiKey_Q;
+        case SDLK_R: return ImGuiKey_R;
+        case SDLK_S: return ImGuiKey_S;
+        case SDLK_T: return ImGuiKey_T;
+        case SDLK_U: return ImGuiKey_U;
+        case SDLK_V: return ImGuiKey_V;
+        case SDLK_W: return ImGuiKey_W;
+        case SDLK_X: return ImGuiKey_X;
+        case SDLK_Y: return ImGuiKey_Y;
+        case SDLK_Z: return ImGuiKey_Z;
         case SDLK_F1: return ImGuiKey_F1;
         case SDLK_F2: return ImGuiKey_F2;
         case SDLK_F3: return ImGuiKey_F3;
@@ -269,6 +301,7 @@ static ImGuiKey ImGui_ImplSDL3_KeycodeToImGuiKey(int keycode)
         case SDLK_F24: return ImGuiKey_F24;
         case SDLK_AC_BACK: return ImGuiKey_AppBack;
         case SDLK_AC_FORWARD: return ImGuiKey_AppForward;
+        default: break;
     }
     return ImGuiKey_None;
 }
@@ -282,11 +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();
@@ -297,6 +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)
             {
@@ -311,6 +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;
@@ -324,6 +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; }
@@ -339,16 +382,21 @@ 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:
         {
-            ImGui_ImplSDL3_UpdateKeyModifiers((SDL_Keymod)event->key.keysym.mod);
-            ImGuiKey key = ImGui_ImplSDL3_KeycodeToImGuiKey(event->key.keysym.sym);
+            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);
             io.AddKeyEvent(key, (event->type == SDL_EVENT_KEY_DOWN));
-            io.SetKeyEventNativeData(key, event->key.keysym.sym, event->key.keysym.scancode, event->key.keysym.scancode); // To support legacy indexing (<1.87 user code). Legacy backend uses SDLK_*** as indices to IsKeyXXX() functions.
+            io.SetKeyEventNativeData(key, event->key.key, event->key.scancode, event->key.scancode); // To support legacy indexing (<1.87 user code). Legacy backend uses SDLK_*** as indices to IsKeyXXX() functions.
             return true;
         }
         case SDL_EVENT_DISPLAY_ORIENTATION:
@@ -362,6 +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;
@@ -372,29 +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:
         {
@@ -407,12 +462,12 @@ 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_GetProperty(SDL_GetWindowProperties(window), "SDL.window.win32.hwnd", nullptr);
+#if defined(_WIN32) && !defined(__WINRT__)
+    viewport->PlatformHandleRaw = (HWND)SDL_GetPointerProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_WIN32_HWND_POINTER, nullptr);
 #elif defined(__APPLE__) && defined(SDL_VIDEO_DRIVER_COCOA)
-    viewport->PlatformHandleRaw = (void*)SDL_GetProperty(SDL_GetWindowProperties(window), "SDL.window.cocoa.window", nullptr);
+    viewport->PlatformHandleRaw = SDL_GetPointerProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_COCOA_WINDOW_POINTER, nullptr);
 #endif
 }
 
@@ -444,6 +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)
@@ -454,27 +510,29 @@ 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.SetPlatformImeDataFn = ImGui_ImplSDL3_SetPlatformImeData;
+    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;
     bd->WantUpdateGamepadsList = true;
 
     // Load mouse cursors
-    bd->MouseCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
-    bd->MouseCursors[ImGuiMouseCursor_TextInput] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM);
-    bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL);
-    bd->MouseCursors[ImGuiMouseCursor_ResizeNS] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENS);
-    bd->MouseCursors[ImGuiMouseCursor_ResizeEW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEWE);
-    bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENESW);
-    bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENWSE);
-    bd->MouseCursors[ImGuiMouseCursor_Hand] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND);
-    bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NO);
+    bd->MouseCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_DEFAULT);
+    bd->MouseCursors[ImGuiMouseCursor_TextInput] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_TEXT);
+    bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_MOVE);
+    bd->MouseCursors[ImGuiMouseCursor_ResizeNS] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NS_RESIZE);
+    bd->MouseCursors[ImGuiMouseCursor_ResizeEW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_EW_RESIZE);
+    bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NESW_RESIZE);
+    bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NWSE_RESIZE);
+    bd->MouseCursors[ImGuiMouseCursor_Hand] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_POINTER);
+    bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NOT_ALLOWED);
 
     // Set platform dependent data in viewport
     // Our mouse update function expect PlatformHandle to be filled for the main viewport
@@ -502,6 +560,7 @@ static bool ImGui_ImplSDL3_Init(SDL_Window* window, SDL_Renderer* renderer, void
     return true;
 }
 
+// Should technically be a SDL_GLContext but due to typedef it is sane to keep it void* in public interface.
 bool ImGui_ImplSDL3_InitForOpenGL(SDL_Window* window, void* sdl_gl_context)
 {
     return ImGui_ImplSDL3_Init(window, nullptr, sdl_gl_context);
@@ -572,7 +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
@@ -618,9 +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);
     }
 }
@@ -717,8 +775,8 @@ static void ImGui_ImplSDL3_UpdateGamepads()
                 if (bd->GamepadMode == ImGui_ImplSDL3_GamepadMode_AutoFirst)
                     break;
             }
-        SDL_free(sdl_gamepads);
         bd->WantUpdateGamepadsList = false;
+        SDL_free(sdl_gamepads);
     }
 
     // FIXME: Technically feeding gamepad shouldn't depend on this now that they are regular inputs.
@@ -782,8 +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()
@@ -824,7 +885,7 @@ void ImGui_ImplSDL3_NewFrame()
     }
 
     // Our io.AddMouseViewportEvent() calls will only be valid when not capturing.
-    // Technically speaking testing for 'bd->MouseButtonsDown == 0' would be more rygorous, but testing for payload reduces noise and potential side-effects.
+    // Technically speaking testing for 'bd->MouseButtonsDown == 0' would be more rigorous, but testing for payload reduces noise and potential side-effects.
     if (bd->MouseCanReportHoveredViewport && ImGui::GetDragDropPayload() == nullptr)
         io.BackendFlags |= ImGuiBackendFlags_HasMouseHoveredViewport;
     else
@@ -847,20 +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;
 
@@ -879,12 +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)
@@ -903,7 +976,7 @@ static void ImGui_ImplSDL3_DestroyWindow(ImGuiViewport* viewport)
     if (ImGui_ImplSDL3_ViewportData* vd = (ImGui_ImplSDL3_ViewportData*)viewport->PlatformUserData)
     {
         if (vd->GLContext && vd->WindowOwned)
-            SDL_GL_DeleteContext(vd->GLContext);
+            SDL_GL_DestroyContext(vd->GLContext);
         if (vd->Window && vd->WindowOwned)
             SDL_DestroyWindow(vd->Window);
         vd->GLContext = nullptr;
@@ -919,27 +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;
@@ -1033,6 +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;
@@ -1053,9 +1136,9 @@ static void ImGui_ImplSDL3_InitPlatformInterface(SDL_Window* window, void* sdl_g
     vd->Window = window;
     vd->WindowID = SDL_GetWindowID(window);
     vd->WindowOwned = false;
-    vd->GLContext = sdl_gl_context;
+    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

@@ -1,7 +1,8 @@
 // dear imgui: Platform Backend for SDL3 (*EXPERIMENTAL*)
 // 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. IT IS POSSIBLE THAT ITS SPECS/API WILL CHANGE BEFORE RELEASE)
+
+// (**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.
@@ -12,9 +13,7 @@
 //  [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()!.
-//  [ ] Platform: IME SUPPORT IS BROKEN IN SDL3 BECAUSE INPUTS GETS SENT TO BOTH APP AND IME + 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.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
@@ -33,6 +32,7 @@ struct SDL_Renderer;
 struct SDL_Gamepad;
 typedef union SDL_Event SDL_Event;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplSDL3_InitForOpenGL(SDL_Window* window, void* sdl_gl_context);
 IMGUI_IMPL_API bool     ImGui_ImplSDL3_InitForVulkan(SDL_Window* window);
 IMGUI_IMPL_API bool     ImGui_ImplSDL3_InitForD3D(SDL_Window* window);

backends/imgui_impl_sdlrenderer2.h

@@ -27,6 +27,7 @@
 
 struct SDL_Renderer;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplSDLRenderer2_Init(SDL_Renderer* renderer);
 IMGUI_IMPL_API void     ImGui_ImplSDLRenderer2_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplSDLRenderer2_NewFrame();

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,
@@ -22,6 +24,7 @@
 // - Introduction, links and more at the top of imgui.cpp
 
 // CHANGELOG
+//  2024-07-01: Update for SDL3 api changes: SDL_RenderGeometryRaw() uint32 version was removed (SDL#9009).
 //  2024-05-14: *BREAKING CHANGE* ImGui_ImplSDLRenderer3_RenderDrawData() requires SDL_Renderer* passed as parameter.
 //  2024-02-12: Amend to query SDL_RenderViewportSet() and restore viewport accordingly.
 //  2023-05-30: Initial version.
@@ -46,8 +49,10 @@
 // SDL_Renderer data
 struct ImGui_ImplSDLRenderer3_Data
 {
-    SDL_Renderer*   Renderer;       // Main viewport's renderer
-    SDL_Texture*    FontTexture;
+    SDL_Renderer*           Renderer;       // Main viewport's renderer
+    SDL_Texture*            FontTexture;
+    ImVector<SDL_FColor>    ColorBuffer;
+
     ImGui_ImplSDLRenderer3_Data()   { memset((void*)this, 0, sizeof(*this)); }
 };
 
@@ -108,8 +113,28 @@ void ImGui_ImplSDLRenderer3_NewFrame()
         ImGui_ImplSDLRenderer3_CreateDeviceObjects();
 }
 
+// https://github.com/libsdl-org/SDL/issues/9009
+static int SDL_RenderGeometryRaw8BitColor(SDL_Renderer* renderer, ImVector<SDL_FColor>& colors_out, SDL_Texture* texture, const float* xy, int xy_stride, const SDL_Color* color, int color_stride, const float* uv, int uv_stride, int num_vertices, const void* indices, int num_indices, int size_indices)
+{
+    const Uint8* color2 = (const Uint8*)color;
+    colors_out.resize(num_vertices);
+    SDL_FColor* color3 = colors_out.Data;
+    for (int i = 0; i < num_vertices; i++)
+    {
+        color3[i].r = color->r / 255.0f;
+        color3[i].g = color->g / 255.0f;
+        color3[i].b = color->b / 255.0f;
+        color3[i].a = color->a / 255.0f;
+        color2 += color_stride;
+        color = (const SDL_Color*)color2;
+    }
+    return SDL_RenderGeometryRaw(renderer, texture, xy, xy_stride, color3, sizeof(*color3), uv, uv_stride, num_vertices, indices, num_indices, size_indices);
+}
+
 void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data, SDL_Renderer* renderer)
 {
+    ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
+
 	// If there's a scale factor set by the user, use that instead
     // If the user has specified a scale factor to SDL_Renderer already via SDL_RenderSetScale(), SDL will scale whatever we pass
     // to SDL_RenderGeometryRaw() by that scale factor. In that case we don't want to be also scaling it ourselves here.
@@ -185,7 +210,7 @@ void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data, SDL_Renderer*
 
                 // Bind texture, Draw
 				SDL_Texture* tex = (SDL_Texture*)pcmd->GetTexID();
-                SDL_RenderGeometryRaw(renderer, tex,
+                SDL_RenderGeometryRaw8BitColor(renderer, bd->ColorBuffer, tex,
                     xy, (int)sizeof(ImDrawVert),
                     color, (int)sizeof(ImDrawVert),
                     uv, (int)sizeof(ImDrawVert),

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,
@@ -27,6 +29,7 @@
 
 struct SDL_Renderer;
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplSDLRenderer3_Init(SDL_Renderer* renderer);
 IMGUI_IMPL_API void     ImGui_ImplSDLRenderer3_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplSDLRenderer3_NewFrame();

backends/imgui_impl_vulkan.cpp

@@ -1895,9 +1895,13 @@ static void ImGui_ImplVulkan_SwapBuffers(ImGuiViewport* viewport, void*)
     if (err == VK_ERROR_OUT_OF_DATE_KHR || err == VK_SUBOPTIMAL_KHR)
     {
         vd->SwapChainNeedRebuild = true;
-        return;
+        if (err == VK_ERROR_OUT_OF_DATE_KHR)
+            return;
+    }
+    else
+    {
+        check_vk_result(err);
     }
-    check_vk_result(err);
 
     wd->FrameIndex = (wd->FrameIndex + 1) % wd->ImageCount;             // This is for the next vkWaitForFences()
     wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->SemaphoreCount; // Now we can use the next set of semaphores

backends/imgui_impl_vulkan.h

@@ -56,7 +56,7 @@
 
 // Vulkan includes
 #ifdef IMGUI_IMPL_VULKAN_USE_VOLK
-#include <Volk/volk.h>
+#include <volk.h>
 #else
 #include <vulkan/vulkan.h>
 #endif
@@ -99,7 +99,7 @@ struct ImGui_ImplVulkan_InitInfo
     VkDeviceSize                    MinAllocationSize;      // Minimum allocation size. Set to 1024*1024 to satisfy zealous best practices validation layer and waste a little memory.
 };
 
-// Called by user code
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool         ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info);
 IMGUI_IMPL_API void         ImGui_ImplVulkan_Shutdown();
 IMGUI_IMPL_API void         ImGui_ImplVulkan_NewFrame();

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.
@@ -39,6 +46,7 @@ struct ImGui_ImplWGPU_InitInfo
     }
 };
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool ImGui_ImplWGPU_Init(ImGui_ImplWGPU_InitInfo* init_info);
 IMGUI_IMPL_API void ImGui_ImplWGPU_Shutdown();
 IMGUI_IMPL_API void ImGui_ImplWGPU_NewFrame();

backends/imgui_impl_win32.cpp

@@ -23,6 +23,8 @@
 // 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).
 //  2023-09-07: Inputs: Added support for keyboard codepage conversion for when application is compiled in MBCS mode and using a non-Unicode window.
@@ -100,6 +102,7 @@ typedef DWORD(WINAPI* PFN_XInputGetState)(DWORD, XINPUT_STATE*);
 #endif
 #if defined(__GNUC__)
 #pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wpragmas"                  // warning: unknown option after '#pragma GCC diagnostic' kind
 #pragma GCC diagnostic ignored "-Wcast-function-type"       // warning: cast between incompatible function types (for loader)
 #endif
 
@@ -112,7 +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;
@@ -173,12 +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;
@@ -307,7 +312,7 @@ static void ImGui_ImplWin32_UpdateKeyModifiers()
     io.AddKeyEvent(ImGuiMod_Ctrl, IsVkDown(VK_CONTROL));
     io.AddKeyEvent(ImGuiMod_Shift, IsVkDown(VK_SHIFT));
     io.AddKeyEvent(ImGuiMod_Alt, IsVkDown(VK_MENU));
-    io.AddKeyEvent(ImGuiMod_Super, IsVkDown(VK_APPS));
+    io.AddKeyEvent(ImGuiMod_Super, IsVkDown(VK_LWIN) || IsVkDown(VK_RWIN));
 }
 
 // This code supports multi-viewports (multiple OS Windows mapped into different Dear ImGui viewports)
@@ -435,6 +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);
@@ -488,12 +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;
@@ -542,7 +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;
@@ -701,6 +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:
@@ -754,12 +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.
@@ -1054,6 +1069,9 @@ static void ImGui_ImplWin32_CreateWindow(ImGuiViewport* viewport)
     vd->HwndOwned = true;
     viewport->PlatformRequestResize = false;
     viewport->PlatformHandle = viewport->PlatformHandleRaw = vd->Hwnd;
+
+    // Secondary viewports store their imgui context
+    ::SetPropA(vd->Hwnd, "IMGUI_CONTEXT", ImGui::GetCurrentContext());
 }
 
 static void ImGui_ImplWin32_DestroyWindow(ImGuiViewport* viewport)
@@ -1151,11 +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);
 }
@@ -1174,6 +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);
 }
@@ -1220,14 +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);
     }
 }
 
@@ -1256,16 +1285,22 @@ static void ImGui_ImplWin32_OnChangedViewport(ImGuiViewport* viewport)
 
 static LRESULT CALLBACK ImGui_ImplWin32_WndProcHandler_PlatformWindow(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
 {
-    if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
-        return true;
+    // Allow secondary viewport WndProc to be called regardless of current context
+    ImGuiContext* hwnd_ctx = (ImGuiContext*)::GetPropA(hWnd, "IMGUI_CONTEXT");
+    ImGuiContext* prev_ctx = ImGui::GetCurrentContext();
+    if (hwnd_ctx != prev_ctx && hwnd_ctx != NULL)
+        ImGui::SetCurrentContext(hwnd_ctx);
 
-    if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle((void*)hWnd))
+    LRESULT result = 0;
+    if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
+        result = true;
+    else if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle((void*)hWnd))
     {
         switch (msg)
         {
         case WM_CLOSE:
             viewport->PlatformRequestClose = true;
-            return 0;
+            break;
         case WM_MOVE:
             viewport->PlatformRequestMove = true;
             break;
@@ -1274,7 +1309,7 @@ static LRESULT CALLBACK ImGui_ImplWin32_WndProcHandler_PlatformWindow(HWND hWnd,
             break;
         case WM_MOUSEACTIVATE:
             if (viewport->Flags & ImGuiViewportFlags_NoFocusOnClick)
-                return MA_NOACTIVATE;
+                result = MA_NOACTIVATE;
             break;
         case WM_NCHITTEST:
             // Let mouse pass-through the window. This will allow the backend to call io.AddMouseViewportEvent() correctly. (which is optional).
@@ -1282,12 +1317,15 @@ static LRESULT CALLBACK ImGui_ImplWin32_WndProcHandler_PlatformWindow(HWND hWnd,
             // If you cannot easily access those viewport flags from your windowing/event code: you may manually synchronize its state e.g. in
             // your main loop after calling UpdatePlatformWindows(). Iterate all viewports/platform windows and pass the flag to your windowing system.
             if (viewport->Flags & ImGuiViewportFlags_NoInputs)
-                return HTTRANSPARENT;
+                result = HTTRANSPARENT;
             break;
         }
     }
-
-    return DefWindowProc(hWnd, msg, wParam, lParam);
+    if (result == 0)
+        result = DefWindowProc(hWnd, msg, wParam, lParam);
+    if (hwnd_ctx != prev_ctx && hwnd_ctx != NULL)
+        ImGui::SetCurrentContext(prev_ctx);
+    return result;
 }
 
 static void ImGui_ImplWin32_InitPlatformInterface(bool platform_has_own_dc)

backends/imgui_impl_win32.h

@@ -21,6 +21,7 @@
 #include "imgui.h"      // IMGUI_IMPL_API
 #ifndef IMGUI_DISABLE
 
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplWin32_Init(void* hwnd);
 IMGUI_IMPL_API bool     ImGui_ImplWin32_InitForOpenGL(void* hwnd);
 IMGUI_IMPL_API void     ImGui_ImplWin32_Shutdown();

docs/BACKENDS.md

@@ -2,23 +2,10 @@ _(You may browse this at https://github.com/ocornut/imgui/blob/master/docs/BACKE
 
 ## Dear ImGui: Backends
 
-**The backends/ folder contains backends for popular platforms/graphics API, which you can use in
-your application or engine to easily integrate Dear ImGui.** Each backend is typically self-contained in a pair of files: imgui_impl_XXXX.cpp + imgui_impl_XXXX.h.
-
-- The 'Platform' backends are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, and windowing.<BR>
-  e.g. Windows ([imgui_impl_win32.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_win32.cpp)), GLFW ([imgui_impl_glfw.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_glfw.cpp)), SDL2 ([imgui_impl_sdl2.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_sdl2.cpp)), etc.
-
-- The 'Renderer' backends are in charge of: creating atlas texture, and rendering imgui draw data.<BR>
-  e.g. DirectX11 ([imgui_impl_dx11.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_dx11.cpp)), OpenGL/WebGL ([imgui_impl_opengl3.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_opengl3.cpp)), Vulkan ([imgui_impl_vulkan.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_vulkan.cpp)), etc.
-
-- For some high-level frameworks, a single backend usually handles both 'Platform' and 'Renderer' parts.<BR>
-  e.g. Allegro 5 ([imgui_impl_allegro5.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_allegro5.cpp)). If you end up creating a custom backend for your engine, you may want to do the same.
-
-An application usually combines one Platform backend + one Renderer backend + main Dear ImGui sources.
-For example, the [example_win32_directx11](https://github.com/ocornut/imgui/tree/master/examples/example_win32_directx11) application combines imgui_impl_win32.cpp + imgui_impl_dx11.cpp. There are 20+ examples in the [examples/](https://github.com/ocornut/imgui/blob/master/examples/) folder. See [EXAMPLES.MD](https://github.com/ocornut/imgui/blob/master/docs/EXAMPLES.md) for details.
-
-**Once Dear ImGui is setup and running, run and refer to `ImGui::ShowDemoWindow()` in imgui_demo.cpp for usage of the end-user API.**
+### Integrating backends
 
+💡 The **[Getting Started](https://github.com/ocornut/imgui/wiki/Getting-Started) wiki guide** has examples of how to integrate Dear ImGui into an existing application.
+<BR> The [EXAMPLES.MD](https://github.com/ocornut/imgui/blob/master/docs/EXAMPLES.md) documentation may also be worth a read.
 
 ### What are backends?
 
@@ -38,7 +25,7 @@ Dear ImGui is highly portable and only requires a few things to run and render,
  - Optional: multi-viewports support.
  etc.
 
-This is essentially what each backend is doing + obligatory portability cruft. Using default backends ensure you can get all those features including the ones that would be harder to implement on your side (e.g. multi-viewports support).
+This is essentially what each backend is doing + obligatory portability cruft. Using standard backends ensure you can get all those features including the ones that would be harder to implement on your side (e.g. multi-viewports support).
 
 It is important to understand the difference between the core Dear ImGui library (files in the root folder)
 and the backends which we are describing here (backends/ folder).
@@ -47,11 +34,24 @@ and the backends which we are describing here (backends/ folder).
 - You should be able to write backends for pretty much any platform and any 3D graphics API.
   e.g. you can get creative and use software rendering or render remotely on a different machine.
 
+### Standard backends
 
-### Integrating a backend
+**The [backends/](https://github.com/ocornut/imgui/blob/master/backends) folder contains backends for popular platforms/graphics API, which you can use in
+your application or engine to easily integrate Dear ImGui.** Each backend is typically self-contained in a pair of files: imgui_impl_XXXX.cpp + imgui_impl_XXXX.h.
 
-See "Getting Started" section of [EXAMPLES.MD](https://github.com/ocornut/imgui/blob/master/docs/EXAMPLES.md) for more details.
+- The 'Platform' backends are in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, and windowing.<BR>
+  e.g. Windows ([imgui_impl_win32.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_win32.cpp)), GLFW ([imgui_impl_glfw.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_glfw.cpp)), SDL2 ([imgui_impl_sdl2.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_sdl2.cpp)), etc.
 
+- The 'Renderer' backends are in charge of: creating atlas texture, and rendering imgui draw data.<BR>
+  e.g. DirectX11 ([imgui_impl_dx11.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_dx11.cpp)), OpenGL/WebGL ([imgui_impl_opengl3.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_opengl3.cpp)), Vulkan ([imgui_impl_vulkan.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_vulkan.cpp)), etc.
+
+- For some high-level frameworks, a single backend usually handles both 'Platform' and 'Renderer' parts.<BR>
+  e.g. Allegro 5 ([imgui_impl_allegro5.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_allegro5.cpp)). If you end up creating a custom backend for your engine, you may want to do the same.
+
+An application usually combines one Platform backend + one Renderer backend + main Dear ImGui sources.
+For example, the [example_win32_directx11](https://github.com/ocornut/imgui/tree/master/examples/example_win32_directx11) application combines imgui_impl_win32.cpp + imgui_impl_dx11.cpp. There are 20+ examples in the [examples/](https://github.com/ocornut/imgui/blob/master/examples/) folder. See [EXAMPLES.MD](https://github.com/ocornut/imgui/blob/master/docs/EXAMPLES.md) for details.
+
+**Once Dear ImGui is setup and running, run and refer to `ImGui::ShowDemoWindow()` in imgui_demo.cpp for usage of the end-user API.**
 
 ### List of backends
 
@@ -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 +35,470 @@ 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)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.91.0
+
+Breaking changes:
+
+- IO, IME: renamed platform IME hook and added explicit context for consistency and future-proofness.
+    - old: io.SetPlatformImeDataFn(ImGuiViewport* viewport, ImGuiPlatformImeData* data);
+    - new: io.PlatformSetImeDataFn(ImGuiContext* ctx, ImGuiViewport* viewport, ImGuiPlatformImeData* data);
+  It is expected that for a vast majority of users this is automatically set by core
+  library and/or platform backend so it won't have any effect.
+- Obsoleted GetContentRegionMax(), GetWindowContentRegionMin() and GetWindowContentRegionMax(). (#7838)
+  You should never need those functions! You can do everything in less a confusing manner by only
+  using GetCursorScreenPos() and GetContentRegionAvail(). Also always consider that if you are using
+  GetWindowPos() and GetCursorPos() you may also be making things unnecessarily complicated.
+  I repeat: You can do everything with GetCursorScreenPos() and GetContentRegionAvail()!
+   - GetWindowContentRegionMax().x - GetCursorPos().x              -->  GetContentRegionAvail().x
+   - GetWindowContentRegionMax().x + GetWindowPos().x              -->  GetCursorScreenPos().x + GetContentRegionAvail().x              // when called from left edge of window
+   - GetContentRegionMax()                                         -->  GetContentRegionAvail() + GetCursorScreenPos() - GetWindowPos() // right edge in local coordinates
+   - GetWindowContentRegionMax().x - GetWindowContentRegionMin().x -->  GetContentRegionAvail()                                         // when called from left edge of window
+- Item flag changes:
+  - Obsoleted PushButtonRepeat()/PopButtonRepeat() in favor of using new PushItemFlag()/PopItemFlag()
+    with ImGuiItemFlags_ButtonRepeat. Kept inline redirecting functions (will obsolete).
+  - Obsoleted PushTabStop()/PopTabStop() in favor of using new PushItemFlag()/PopItemFlag()
+    with ImGuiItemFlags_NoTabStop. Kept inline redirecting functions (will obsolete).
+  - Renamed ImGuiSelectableFlags_DontClosePopups to ImGuiSelectableFlags_NoAutoClosePopups for
+    consistency. Kept inline redirecting functions (will obsolete).
+    + Internals: changed/inverted ImGuiItemFlags_SelectableDontClosePopup (default==false) to
+      ImGuiItemFlags_AutoClosePopups (default==true), same logic, only inverted behavior.
+    (#1379, #1468, #2200, #4936, #5216, #7302, #7573)
+- Commented out obsolete ImGuiModFlags (renamed to ImGuiKeyChord in 1.89). (#4921, #456)
+- Commented out obsolete ImGuiModFlags_XXX values (renamed to ImGuiMod_XXX in 1.89). (#4921, #456)
+    - ImGuiModFlags_Ctrl -> ImGuiMod_Ctrl, ImGuiModFlags_Shift -> ImGuiMod_Shift etc.
+- Backends: GLFW+Emscripten: Renamed ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback() to
+  ImGui_ImplGlfw_InstallEmscriptenCallbacks(), with an additional GLFWWindow* parameter. (#7647) [@ypujante]
+
+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)
+- Added PushItemFlag()/PopItemFlags(), ImGuiItemFlags to modify shared item flags:
+   - Added ImGuiItemFlags_NoTabStop to disable tabbing through items.
+   - Added ImGuiItemFlags_NoNav to disable any navigation and focus of items. (#787)
+   - Added ImGuiItemFlags_NoNavDefaultFocus to disable item being default focus. (#787)
+   - Added ImGuiItemFlags_ButtonRepeat to enable repeat on any button-like behavior.
+   - Added ImGuiItemFlags_AutoClosePopups to disable menu items/selection auto closing parent popups.
+     Disabling this was previously possible for Selectable() via a direct flag but not for MenuItem().
+     (#1379, #1468, #2200, #4936, #5216, #7302, #7573)
+   - This was mostly all previously in imgui_internal.h.
+- Multi-Select: added multi-select API and demos. (#1861, #6518)
+   - This system implements standard multi-selection idioms (CTRL+mouse click, CTRL+keyboard moves,
+     SHIFT+mouse click, SHIFT+keyboard moves, etc.) with support for clipper (not submitting non-visible
+     items), box-selection with scrolling, and many other details.
+   - In the spirit of Dear ImGui design, your code owns both items and actual selection data.
+     This is designed to allow all kinds of selection storage you may use in your application
+     (e.g. set/map/hash, intrusive selection, interval trees, up to you).
+   - The supported widgets are Selectable(), Checkbox(). TreeNode() is also technically supported but...
+     using this correctly is more complicated. You need some sort of linear/random access to your tree,
+     which is suited to advanced trees setups already implementing filters and clipper.
+     We will work toward simplifying our existing demo for trees.
+   - A helper ImGuiSelectionBasicStorage is provided to facilitate getting started in a typical app
+     (likely to suit a majority of users).
+   - Documentation:
+     - Wiki page https://github.com/ocornut/imgui/wiki/Multi-Select for API overview.
+     - Demo code + headers are well commented.
+  - Added BeginMultiSelect(), EndMultiSelect(), SetNextItemSelectionUserData().
+  - Added IsItemToggledSelection() for use if you need latest selection update during current iteration.
+  - Added ImGuiMultiSelectIO and ImGuiSelectionRequest structures:
+    - BeginMultiSelect() and EndMultiSelect() return a ImGuiMultiSelectIO structure, which
+      is mostly an array of ImGuiSelectionRequest actions (clear, select all, set range, etc.)
+    - Other fields are helpful when using a clipper, or wanting to handle deletion nicely.
+  - Added ImGuiSelectionBasicStorage helper to store and maintain a selection (optional):
+    - This is similar to if you used e.g. a std::set<ID> to store a selection, with all the right
+      glue to honor ImGuiMultiSelectIO requests. Most applications can use that.
+  - Added ImGuiSelectionExternalStorage helper to maintain an externally stored selection (optional):
+    - Helpful to easily bind multi-selection to e.g. an array of checkboxes.
+  - Added ImGuiMultiSelectFlags options:
+    - ImGuiMultiSelectFlags_SingleSelect
+    - ImGuiMultiSelectFlags_NoSelectAll
+    - ImGuiMultiSelectFlags_NoRangeSelect
+    - ImGuiMultiSelectFlags_NoAutoSelect
+    - ImGuiMultiSelectFlags_NoAutoClear
+    - ImGuiMultiSelectFlags_NoAutoClearOnReselect (#7424)
+    - ImGuiMultiSelectFlags_BoxSelect1d
+    - ImGuiMultiSelectFlags_BoxSelect2d
+    - ImGuiMultiSelectFlags_BoxSelectNoScroll
+    - ImGuiMultiSelectFlags_ClearOnEscape
+    - ImGuiMultiSelectFlags_ClearOnClickVoid
+    - ImGuiMultiSelectFlags_ScopeWindow (default), ImGuiMultiSelectFlags_ScopeRect
+    - ImGuiMultiSelectFlags_SelectOnClick (default), ImGuiMultiSelectFlags_SelectOnClickRelease
+    - ImGuiMultiSelectFlags_NavWrapX
+  - Demo: Added "Examples->Assets Browser" demo.
+  - Demo: Added "Widgets->Selection State & Multi-Select" section, with:
+    - Multi-Select
+    - Multi-Select (with clipper)
+    - Multi-Select (with deletion)
+    - Multi-Select (dual list box) (#6648)
+    - Multi-Select (in a table)
+    - Multi-Select (checkboxes)
+    - Multi-Select (multiple scopes)
+    - Multi-Select (tiled assert browser)
+    - Multi-Select (trees) (#1861)
+    - Multi-Select (advanced)
+- Inputs: added SetItemKeyOwner(ImGuiKey key) in public API.
+  This is a simplified version of a more complete set of function available in imgui_internal.h.
+  One common use-case for this is to allow your widgets to disable standard inputs behaviors such
+  as Tab or Alt handling, Mouse Wheel scrolling, etc.
+  (#456, #2637, #2620, #2891, #3370, #3724, #4828, #5108, #5242, #5641)
+     // Hovering or activating the button will disable mouse wheel default behavior to scroll
+     InvisibleButton(...);
+     SetItemKeyOwner(ImGuiKey_MouseWheelY);
+- Nav: fixed clicking window decorations (e.g. resize borders) from losing focused item when
+  within a child window using ImGuiChildFlags_NavFlattened.
+- InputText: added '\' and '/' as word separator. (#7824, #7704) [@reduf]
+- TreeNode: added SetNextItemStorageID() to specify/override the identifier used for persisting
+  open/close storage. Useful if needing to often read/write from storage without manipulating
+  the ID stack. (#7553, #6990, #3823, #1131)
+- Selectable: added ImGuiSelectableFlags_Highlight flag to highlight items independently from
+  the hovered state. (#7820) [@rerilier]
+- Clipper: added SeekCursorForItem() function. When using ImGuiListClipper::Begin(INT_MAX) you can
+  can use the clipper without knowing the amount of items beforehand. (#1311)
+  In this situation, call ImGuiListClipper::SeekCursorForItem(items_count) at the end of your iteration
+  loop to position the layout cursor correctly. This is done automatically if provided a count to Begin().
+- Groups, Tables: fixed EndGroup() failing to correctly capture current table occupied size. (#7543)
+- Style, TabBar: added style.TabBarOverlineSize / ImGuiStyleVar_TabBarOverlineSize to manipulate
+  thickness of the horizontal line over selected tabs. [@DctrNoob]
+- Style: close button and collapse/window-menu button hover highlight made rectangular instead of round.
+- Misc: added GetID(int) variant for consistency. (#7111)
+- Debug Tools:
+  - Debug Log: Added IMGUI_DEBUG_LOG(), ImGui::DebugLog() in public API. (#5855)
+    Printed entries include imgui frame counter prefix + are redirected to ShowDebugLogWindow() and
+    other configurable locations. Always call IMGUI_DEBUG_LOG() for maximum stripping in caller code.
+  - Debug Log: Added "Configure Outputs.." button. (#5855)
+  - Debug Log: Fixed incorrect checkbox layout when partially clipped.
+- Demo: Reworked "Property Editor" demo in a manner that more resemble the tree data and
+  struct description data that a real application would want to use.
+- Backends:
+  - Backends: Win32: Fixed ImGuiMod_Super being mapped to VK_APPS instead of (VK_LWIN || VK_RWIN).
+    (#7768, #4858, #2622) [@Aemony]
+  - Backends: SDL3: Update for API changes: SDL_GetGamepads() memory ownership change. (#7807)
+  - Backends: SDL3: Update for API changes: SDL_GetClipboardText() memory ownership change. (#7801)
+  - Backends: SDL3: Update for API changes: SDLK_x renames and SDLK_KP_x removals (#7761, #7762)
+  - Backends: SDL3: Update for API changes: SDL_GetProperty() change to SDL_GetPointerProperty(). (#7794) [@wermipls]
+  - 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
+    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]
+  - Backends: GLFW+Emscripten: Fixed Emscripten warning when using mouse wheel on some setups
+    "Unable to preventDefault inside passive event listener". (#7647, #7600) [@ypujante]
+
+Docking+Viewports Branch:
+
+- Viewports: Always update fallback monitor to primary monitor if there's one.
+- Backends: OSX: Fixed NSAppKitVersion version limit for setWantsBestResolutionOpenGLSurface
+  usage. (#7814) [@YGXXD]
+- Backends: SDL3: Fixed a bug preventing ImGuiViewportFlags_NoFocusOnAppearing support from
+  working (Windows only).
+- Backends: Vulkan: ImGui_ImplVulkan_SwapBuffers() used by secondary viewports still proceeds
+  increasing frame counters on VK_SUBOPTIMAL_KHR. (#7825, #3881) [@NostraMagister]
+
+
+-----------------------------------------------------------------------
+ VERSION 1.90.9 (Released 2024-07-01)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.90.9
+
+Breaking changes:
+
+- Removed old nested structure: renaming ImGuiStorage::ImGuiStoragePair type to
+  ImGuiStoragePair (simpler for many languages). No significant nested type left.
+- BeginChild: added ImGuiChildFlags_NavFlattened as a replacement for the window
+  flag ImGuiWindowFlags_NavFlattened: the feature only ever made sense for
+  BeginChild() calls anyhow. (#7687) [@cfillion]
+   - old: BeginChild("Name", size, 0, ImGuiWindowFlags_NavFlattened);
+   - new: BeginChild("Name", size, ImGuiChildFlags_NavFlattened, 0)
+  Kept inline redirection flag (will obsolete).
+- Style: renamed tab colors for clarity and consistency with other changes: (#261, #351)
+  - ImGuiCol_TabActive          -> ImGuiCol_TabSelected
+  - ImGuiCol_TabUnfocused       -> ImGuiCol_TabDimmed
+  - ImGuiCol_TabUnfocusedActive -> ImGuiCol_TabDimmedSelected
+  Kept inline redirecting enums (will obsolete).
+- IO: io.ClearInputKeys() (first exposed in 1.89.8) doesn't clear mouse data.
+  Newly added io.ClearInputMouse() does. (#4921)
+- Drag and Drop: renamed ImGuiDragDropFlags_SourceAutoExpirePayload to
+  ImGuiDragDropFlags_PayloadAutoExpire. Kept inline redirecting enum (will obsolete). (#1725, #143)
+
+Other changes:
+
+- IO: do not disable io.ConfigWindowsResizeFromEdges (which allow resizing from borders
+  and lower-left corner) when ImGuiBackendFlags_HasMouseCursors is not set by backend.
+  The initial reasoning is that resizing from borders feels better when correct mouse cursor
+  shape change as honored by backends. Keeping this enabling will hopefully increase pressure
+  on third-party backends to set ImGuiBackendFlags_HasMouseCursors and honor changes of
+  ImGui::GetMouseCursor() value. (#1495)
+- IO: do not claim io.WantCaptureMouse=true on the mouse release frame of a button
+  which was pressed over void/underlying app, which is consistent/needed to allow the
+  mouse up event of a drag over void/underlying app to catch release. (#1392) [@Moka42]
+- IO: Added io.ClearInputMouse() to clear mouse state. (#4921)
+- Windows: BeginChild(): fixed a glitch when during a resize of a child window which is
+  tightly close to the boundaries of its parent (e.g. with zero WindowPadding), the child
+  position could have temporarily be moved around by erroneous padding application. (#7706)
+- TabBar, Style: added ImGuiTabBarFlags_DrawSelectedOverline option to draw an horizontal
+  line over selected tabs to increase visibility. This is used by docking.
+  Added corresponding ImGuiCol_TabSelectedOverline and ImGuiCol_TabDimmedSelectedOverline colors.
+- Tables: added TableGetHoveredColumn() to public API, as an alternative to testing for
+  'TableGetColumnFlags(column) & ImGuiTableColumnFlags_IsHovered' on each column. (#3740)
+- Disabled, Inputs: fixed using Shortcut() or SetNextItemShortcut() within a disabled block
+  bypassing the disabled state. (#7726)
+- Disabled: Reworked 1.90.8 behavior of Begin() not inheriting current BeginDisabled() state,
+  to make it that only tooltip windows are temporarily clearing it. (#211, #7640)
+- Drags: added ImGuiSliderFlags_WrapAround flag for DragInt(), DragFloat() etc. (#7749)
+- Drag and Drop: BeginDragDropSource() with ImGuiDragDropFlags_SourceExtern sets
+  active id so a multi-frame extern source doesn't interfere with hovered widgets. (#143)
+- Drag and Drop: BeginDragDropSource() with ImGuiDragDropFlags_SourceExtern does not assume
+  a mouse button being pressed. Facilitate implementing cross-context drag and drop. (#143)
+- Drag and Drop: Added ImGuiDragDropFlags_PayloadNoCrossContext/_PayloadNoCrossProcess flags
+  as metadata to specify that a payload may not be copied outside the context/process by
+  some logic aiming to copy payloads around.
+- Drag and Drop: Fixes an issue when elapsing payload would be based on last payload
+  frame instead of last drag source frame, which makes a difference if not resubmitting
+  payload every frame. (#143)
+- Debug Tools: Metrics/Debugger: Browsing a Storage perform hover lookup on identifier.
+- Viewports: Backported 'void* ImGuiViewport::PlatformHandle' from docking branch for
+  use by backends.
+- imgui_freetype: Fixed divide by zero while handling FT_PIXEL_MODE_BGRA glyphs. (#7267, #3369)
+- Backends: OpenGL2, OpenGL3: ImGui_ImplOpenGL3_NewFrame() recreates font texture if it
+  has been destroyed by ImGui_ImplOpenGL3_DestroyFontsTexture(). (#7748) [@mlauss2]
+- Backends: SDL3: Update for API removal of keysym field in SDL_KeyboardEvent. (#7728)
+- Backends: SDL3: Update for SDL_StartTextInput()/SDL_StopTextInput() API changes. (#7735)
+- Backends: SDL3: Update for SDL_SetTextInputRect() API rename. (#7760, #7754) [@maxortner01]
+- Backends: SDLRenderer3: Update for SDL_RenderGeometryRaw() API changes. (SDL#9009).
+- Backends: Vulkan: Remove Volk/ from volk.h #include directives. (#7722, #6582, #4854)
+  [@martin-ejdestig]
+- Examples: SDL3: Remove use of SDL_HINT_IME_NATIVE_UI since new SDL_HINT_IME_IMPLEMENTED_UI
+  values has a more suitable default for our case case.
+- Examples: GLFW+Vulkan, SDL+Vulkan: handle swap chain resize even without Vulkan
+  returning VK_SUBOPTIMAL_KHR, which doesn't seem to happen on Wayland. (#7671)
+  [@AndreiNego, @ocornut]
+
+Docking+Viewports Branch:
+
+- Windows, Menus: Fixed an issue where the size of sub-menu in their own viewport
+  would be erroneously clamped to the size of main viewport. (#7730)
+- Merged GetBackgroundDrawList() and GetBackgroundDrawList(ImGuiViewport* viewport)
+  api entry points into a same one GetBackgroundDrawList(ImGuiViewport* viewport = NULL);
+- Merged GetForegroundDrawList() and GetForegroundDrawList(ImGuiViewport* viewport)
+  api entry points into a same one GetForegroundDrawList(ImGuiViewport* viewport = NULL);
+- Backends: SDL3: Update for introduction of SDL_GLContext from void*. (#7701, #7702)
+  [@bcsanches]
+- Backends: Win32: Secondary viewports WndProc handler retrieve/set imgui context from
+  the HWND, allowing WndProc dispatch to work in multi-context setups.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.90.8 (Released 2024-06-06)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.90.8
+
+Breaking changes:
+
+- Reordered various ImGuiInputTextFlags values. This should NOT be breaking unless
+  you are using generated headers that have values not matching the main library.
+- Removed ImGuiButtonFlags_MouseButtonDefault_ = ImGuiButtonFlags_MouseButtonLeft
+  from imgui.h, was mostly unused and misleading.
+
+Other changes:
+
+- Inputs: fixed IsMouseClicked(..., repeat=true); broken in 1.90.7 on 2024/05/22.
+  (due to an internal api parameter swap, repeat wouldn't be honored and
+  ownership would be accidentally checked even though this api is meant to not
+  check ownership). (#7657) [@korenkonder]
+- Windows: fixed altering FramePadding mid-frame not correctly affecting logic
+  responsible for honoring io.ConfigWindowsMoveFromTitleBarOnly. (#7576, #899)
+- Scrollbar: made scrolling logic more standard: clicking above or below the
+  grab scrolls by one page, holding mouse button repeats scrolling. (#7328, #150)
+- Scrollbar: fixed miscalculation of vertical scrollbar visibility when required
+  solely by the presence of an horizontal scrollbar. (#1574)
+- InputScalar, InputInt, InputFloat: added ImGuiInputTextFlags_ParseEmptyRefVal
+  to parse an empty field as zero-value. (#7305) [@supermerill, @ocornut]
+- InputScalar, InputInt, InputFloat: added ImGuiInputTextFlags_DisplayEmptyRefVal
+  to display a zero-value as empty. (#7305) [@supermerill, @ocornut]
+- Popups: fixed an issue preventing to close a popup opened over a modal by clicking
+  over void (it required clicking over the visible part of the modal). (#7654)
+- Tables: fixed an issue where ideal size reported to parent container wouldn't
+  correctly take account of inner scrollbar, affecting potential auto-resize of
+  parent container. (#7651)
+- Tables: fixed a bug where after disabling the ScrollY flag for a table,
+  previous scrollbar width would be accounted for. (#5920)
+- Combo: simplified Combo() API uses a list clipper (due to its api it wasn't
+  previously trivial before we added clipper.IncludeItemByIndex() function).
+- Disabled: nested tooltips or other non-child window within a BeginDisabled()
+  block disable the disabled state. (#211, #7640)
+- Misc: made ImGuiDir and ImGuiSortDirection stronger-typed enums.
+- Backends: SDL3: Update for SDL_SYSTEM_CURSOR_xxx api renames. (#7653)
+
+
 -----------------------------------------------------------------------
  VERSION 1.90.7 (Released 2024-05-27)
 -----------------------------------------------------------------------
@@ -140,7 +604,6 @@ versions of IsKeyPressed(), IsKeyChordPressed(), IsMouseClicked() prior to this
   those API public. Only past users of imgui_internal.h with the extra parameters will be affected.
   Added asserts for valid flags in various functions to detect _some_ misuses, BUT NOT ALL.
 
-
 Docking+Viewports Branch:
 
 - Docking: *BREAKING* changed signature of DockSpaceOverViewport() to allow passing
@@ -553,6 +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
@@ -602,6 +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);
@@ -843,7 +1308,7 @@ Breaking changes:
 
 - IO: Obsoleted io.ClearInputCharacters() (added in 1.47) as it now ambiguous
   and often incorrect/misleading considering the existence of a higher-level
-  input queue. This is automatically cleared by io.ClearInputsKeys(). (#4921)
+  input queue. This is automatically cleared by io.ClearInputKeys(). (#4921)
 - ImDrawData: CmdLists[] array is now owned, changed from 'ImDrawList**' to
   'ImVector<ImDrawList*>'. Majority of users shouldn't be affected, but you
   cannot compare to NULL nor reassign manually anymore.
@@ -881,10 +1346,10 @@ Other changes:
   will slightly reduce scrollbar size. Generally we tried to make it that window
   border size has no incidence on layout but this can't work with thick borders. (#2522)
 - IO: Added io.ClearEventsQueue() to clear incoming inputs events. (#4921)
-  May be useful in conjunction with io.ClearInputsKeys() if you need to clear
+  May be useful in conjunction with io.ClearInputKeys() if you need to clear
   both current inputs state and queued events (e.g. when using blocking native
   dialogs such as Windows's ::MessageBox() or ::GetOpenFileName()).
-- IO: Changed io.ClearInputsKeys() specs to also clear current frame character buffer
+- IO: Changed io.ClearInputKeys() specs to also clear current frame character buffer
   (what now obsoleted io.ClearInputCharacters() did), as this is effectively the
   desirable behavior.
 - Misc: Added IMGUI_DISABLE_STB_SPRINTF_IMPLEMENTATION config macro to disable

docs/EXAMPLES.md

@@ -35,46 +35,13 @@ At shutdown:
   call ImGui::DestroyContext()
 ```
 
-Example (using [backends/imgui_impl_win32.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_win32.cpp) + [backends/imgui_impl_dx11.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_dx11.cpp)):
+Main resource:
+- Read **[Getting Started](https://github.com/ocornut/imgui/wiki/Getting-Started) wiki guide** for detailed examples of how to integrate Dear ImGui in an existing application.
 
-```cpp
-// Create a Dear ImGui context, setup some options
-ImGui::CreateContext();
-ImGuiIO& io = ImGui::GetIO();
-io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable some options
-
-// Initialize Platform + Renderer backends (here: using imgui_impl_win32.cpp + imgui_impl_dx11.cpp)
-ImGui_ImplWin32_Init(my_hwnd);
-ImGui_ImplDX11_Init(my_d3d_device, my_d3d_device_context);
-
-// Application main loop
-while (true)
-{
-    // Beginning of frame: update Renderer + Platform backend, start Dear ImGui frame
-    ImGui_ImplDX11_NewFrame();
-    ImGui_ImplWin32_NewFrame();
-    ImGui::NewFrame();
-
-    // Any application code here
-    ImGui::Text("Hello, world!");
-
-    // End of frame: render Dear ImGui
-    ImGui::Render();
-    ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());
-
-    // Swap
-    g_pSwapChain->Present(1, 0);
-}
-
-// Shutdown
-ImGui_ImplDX11_Shutdown();
-ImGui_ImplWin32_Shutdown();
-ImGui::DestroyContext();
-```
-
-Please read 'PROGRAMMER GUIDE' in imgui.cpp for notes on how to setup Dear ImGui in your codebase.
-Please read the comments and instruction at the top of each file.
-Please read FAQ at https://www.dearimgui.com/faq
+Additional resources:
+- Read FAQ at https://www.dearimgui.com/faq
+- Read 'PROGRAMMER GUIDE' section in imgui.cpp.
+- Read the comments and instruction at the top of each file.
 
 If you are using any of the backends provided here, you can add the backends/imgui_impl_xxxx(.cpp,.h)
 files to your project and use as-in. Each imgui_impl_xxxx.cpp file comes with its own individual

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.SetPlatformImeDataFn() 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

@@ -13,7 +13,7 @@ Businesses: support continued development and maintenance via invoiced sponsorin
 <br>&nbsp;&nbsp;_E-mail: contact @ dearimgui dot com_
 <br>Individuals: support continued development and maintenance [here](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S). Also see [Funding](https://github.com/ocornut/imgui/wiki/Funding) page.
 
-| [The Pitch](#the-pitch) - [Usage](#usage) - [How it works](#how-it-works) - [Releases & Changelogs](#releases--changelogs) - [Demo](#demo) - [Integration](#integration) |
+| [The Pitch](#the-pitch) - [Usage](#usage) - [How it works](#how-it-works) - [Releases & Changelogs](#releases--changelogs) - [Demo](#demo) - [Getting Started & Integration](#getting-started--integration) |
 :----------------------------------------------------------: |
 | [Gallery](#gallery) - [Support, FAQ](#support-frequently-asked-questions-faq) -  [How to help](#how-to-help) - **[Funding & Sponsors](https://github.com/ocornut/imgui/wiki/Funding)** - [Credits](#credits) - [License](#license) |
 | [Wiki](https://github.com/ocornut/imgui/wiki) - [Extensions](https://github.com/ocornut/imgui/wiki/Useful-Extensions) - [Languages bindings & frameworks backends](https://github.com/ocornut/imgui/wiki/Bindings) - [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) - [User quotes](https://github.com/ocornut/imgui/wiki/Quotes) |
@@ -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.
 
@@ -43,7 +43,7 @@ Dear ImGui is particularly suited to integration in game engines (for tooling),
 
 **Backends for a variety of graphics API and rendering platforms** are provided in the [backends/](https://github.com/ocornut/imgui/tree/master/backends) folder, along with example applications in the [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder. You may also create your own backend. Anywhere where you can render textured triangles, you can render Dear ImGui.
 
-See the [Getting Started](https://github.com/ocornut/imgui/wiki/Getting-Started) guide and [Integration](#integration) section of this document for more details.
+See the [Getting Started & Integration](#getting-started--integration) section of this document for more details.
 
 After Dear ImGui is set up in your application, you can use it from \_anywhere\_ in your program loop:
 ```cpp
@@ -114,7 +114,7 @@ You should be able to build the examples from sources. If you don't, let us know
 
 The demo applications are not DPI aware so expect some blurriness on a 4K screen. For DPI awareness in your application, you can load/reload your font at a different scale and scale your style with `style.ScaleAllSizes()` (see [FAQ](https://www.dearimgui.com/faq)).
 
-### Integration
+### Getting Started & Integration
 
 See the [Getting Started](https://github.com/ocornut/imgui/wiki/Getting-Started) guide for details.
 
@@ -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.
 
@@ -162,7 +162,7 @@ See: [Upcoming Changes](https://github.com/ocornut/imgui/wiki/Upcoming-Changes).
 
 See: [Dear ImGui Test Engine + Test Suite](https://github.com/ocornut/imgui_test_engine) for Automation & Testing.
 
-For the purposes of getting search engines to crawl the wiki, here's a link to the [Crawable Wiki](https://github-wiki-see.page/m/ocornut/imgui/wiki) (not for humans, [here's why](https://github-wiki-see.page/)).
+For the purposes of getting search engines to crawl the wiki, here's a link to the [Crawlable Wiki](https://github-wiki-see.page/m/ocornut/imgui/wiki) (not for humans, [here's why](https://github-wiki-see.page/)).
 
 Getting started? For first-time users having issues compiling/linking/running or issues loading fonts, please use [GitHub Discussions](https://github.com/ocornut/imgui/discussions). For ANY other questions, bug reports, requests, feedback, please post on [GitHub Issues](https://github.com/ocornut/imgui/issues). Please read and fill the New Issue template carefully.
 
@@ -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

@@ -39,7 +39,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - scrolling: forward mouse wheel scrolling to parent window when at the edge of scrolling limits? (useful for listbox,tables?)
  - scrolling/style: shadows on scrollable areas to denote that there is more contents (see e.g. DaVinci Resolve ui)
 
- - drawdata: make it easy to deep-copy (or swap?) a full ImDrawData so user can easily save that data if they use threaded rendering. (e.g. #2646)
+ - drawdata: make it easy to deep-copy (or swap?) a full ImDrawData so user can easily save that data if they use threaded rendering. (#1860 see ImDrawDataSnapshot)
  ! drawlist: add CalcTextSize() func to facilitate consistent code from user pov (currently need to use ImGui or ImFont alternatives!)
  - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command). (WIP branch)
  - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
@@ -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)
@@ -117,7 +116,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
 !- color: the color conversion helpers/types are a mess and needs sorting out.
  - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
 
- - plot: full featured plot/graph api w/ scrolling, zooming etc. --> ImPlot
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. --> promote using ImPlot
  - (plot: deleted all other todo lines on 2023-06-28)
 
  - clipper: ability to disable the clipping through a simple flag/bool.
@@ -178,7 +177,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - drag float: power != 0.0f with current value being outside the range keeps the value stuck.
  - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
 
- - combo: use clipper.
  - combo: a way/helper to customize the combo preview (#1658) -> experimental BeginComboPreview()
  - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
  - listbox: multiple selection (WIP range-select branch)
@@ -201,15 +199,14 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
  - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
  - tooltip: drag tooltip hovering over source widget with IsItemHovered/SetTooltip flickers (WIP branch)
+ - tooltip: tooltip priorities to override a stock tooltip (e.g. shortcut tooltip)
 
  - status-bar: add a per-window status bar helper similar to what menu-bar does. generalize concept of layer0 rect in window (can make _MenuBar window flag obsolete too).
  - shortcuts: store multiple keychords in ImGuiKeyChord
  - shortcuts: Hovered route (lower than Focused, higher than Global)
  - shortcuts: local-style shortcut api, e.g. parse "&Save"
  - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer.
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally zero.
  - menus: would be nice if the Selectable() supported horizontal alignment (must be given the equivalent of WorkRect.Max.x matching the position of the shortcut column)
 
  - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
@@ -220,11 +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)
@@ -305,7 +302,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - font/opt: Considering storing standalone AdvanceX table as 16-bit fixed point integer?
  - font/opt: Glyph currently 40 bytes (2+9*4). Consider storing UV as 16-bits integer? (->32 bytes). X0/Y0/X1/Y1 as 16 fixed-point integers? Or X0/Y0 as float and X1/Y1 as fixed8_8?
 
- - nav: visual feedback on button press.
  - nav: some features such as PageUp/Down/Home/End should probably work without ImGuiConfigFlags_NavEnableKeyboard? (where do we draw the line? how about CTRL+Tab)
  ! nav: never clear NavId on some setup (e.g. gamepad centric)
  - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
@@ -359,8 +355,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
  - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
  - misc: use more size_t in public api?
- - misc: possible compile-time support for string view/range instead of char* would e.g. facilitate usage with Rust (#683, #3038, WIP string_view branch)
- - misc: possible compile-time support for wchar_t instead of char*?
+ - misc: support for string view/range instead of char* would e.g. facilitate usage with Rust (#683, #3038, WIP string_view branch)
 
  - demo: demonstrate using PushStyleVar() in more details.
  - demo: add vertical separator demo
@@ -380,7 +375,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - backends: bgfx: https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
  - backends: emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
 
- - bindings: ways to use clang ast dump to generate bindings or helpers for bindings? (e.g. clang++ -Xclang -ast-dump=json imgui.h) (WIP project "dear-bindings" still private)
+ - bindings: ways to use clang ast dump to generate bindings or helpers for bindings? (e.g. clang++ -Xclang -ast-dump=json imgui.h) (--> use https://github.com/dearimgui/dear_bindings)
 
  - optimization: replace vsnprintf with stb_printf? using IMGUI_USE_STB_SPRINTF. (#1038 + needed for string_view)
  - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.

examples/example_android_opengl3/android/app/src/main/AndroidManifest.xml

@@ -11,7 +11,7 @@
             android:name="imgui.example.android.MainActivity"
             android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
             android:configChanges="orientation|keyboardHidden|screenSize"
-            android:exported="false">
+            android:exported="true">
             <meta-data android:name="android.app.lib_name"
                 android:value="ImGuiExample" />
 

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

@@ -97,7 +97,7 @@ int main(int, char**)
     // Setup Platform/Renderer backends
     ImGui_ImplGlfw_InitForOpenGL(window, true);
 #ifdef __EMSCRIPTEN__
-    ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback("#canvas");
+    ImGui_ImplGlfw_InstallEmscriptenCallbacks(window, "#canvas");
 #endif
     ImGui_ImplOpenGL3_Init(glsl_version);
 
@@ -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

@@ -25,7 +25,7 @@
 // Volk headers
 #ifdef IMGUI_IMPL_VULKAN_USE_VOLK
 #define VOLK_IMPLEMENTATION
-#include <Volk/volk.h>
+#include <volk.h>
 #endif
 
 // [Win32] Our example includes a copy of glfw3.lib pre-compiled with VS2010 to maximize ease of testing and compatibility with old VS compilers.
@@ -497,17 +497,19 @@ int main(int, char**)
         glfwPollEvents();
 
         // Resize swap chain?
-        if (g_SwapChainRebuild)
+        int fb_width, fb_height;
+        glfwGetFramebufferSize(window, &fb_width, &fb_height);
+        if (fb_width > 0 && fb_height > 0 && (g_SwapChainRebuild || g_MainWindowData.Width != fb_width || g_MainWindowData.Height != fb_height))
         {
-            int width, height;
-            glfwGetFramebufferSize(window, &width, &height);
-            if (width > 0 && height > 0)
-            {
-                ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
-                ImGui_ImplVulkanH_CreateOrResizeWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
-                g_MainWindowData.FrameIndex = 0;
-                g_SwapChainRebuild = false;
-            }
+            ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
+            ImGui_ImplVulkanH_CreateOrResizeWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, fb_width, fb_height, g_MinImageCount);
+            g_MainWindowData.FrameIndex = 0;
+            g_SwapChainRebuild = false;
+        }
+        if (glfwGetWindowAttrib(window, GLFW_ICONIFIED) != 0)
+        {
+            ImGui_ImplGlfw_Sleep(10);
+            continue;
         }
 
         // Start the Dear ImGui frame

examples/example_glfw_wgpu/CMakeLists.txt

@@ -27,6 +27,12 @@ set(IMGUI_DIR ../../)
 
 # Libraries
 if(EMSCRIPTEN)
+  if(EMSCRIPTEN_VERSION VERSION_GREATER_EQUAL "3.1.57")
+    set(IMGUI_EMSCRIPTEN_GLFW3 "--use-port=contrib.glfw3" CACHE STRING "Choose between --use-port=contrib.glfw3 and -sUSE_GLFW=3 for GLFW implementation (default to --use-port=contrib.glfw3)")
+  else()
+    # cannot use contrib.glfw3 prior to 3.1.57
+    set(IMGUI_EMSCRIPTEN_GLFW3 "-sUSE_GLFW=3" CACHE STRING "Use -sUSE_GLFW=3 for GLFW implementation" FORCE)
+  endif()
   set(LIBRARIES glfw)
   add_compile_options(-sDISABLE_EXCEPTION_CATCHING=1 -DIMGUI_DISABLE_FILE_FUNCTIONS=1)
 else()
@@ -73,6 +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
@@ -82,9 +93,15 @@ target_link_libraries(example_glfw_wgpu PUBLIC ${LIBRARIES})
 
 # Emscripten settings
 if(EMSCRIPTEN)
+  if("${IMGUI_EMSCRIPTEN_GLFW3}" STREQUAL "--use-port=contrib.glfw3")
+    target_compile_options(example_glfw_wgpu PUBLIC
+        "${IMGUI_EMSCRIPTEN_GLFW3}"
+    )
+  endif()
+  message(STATUS "Using ${IMGUI_EMSCRIPTEN_GLFW3} GLFW implementation")
   target_link_options(example_glfw_wgpu PRIVATE
     "-sUSE_WEBGPU=1"
-    "-sUSE_GLFW=3"
+    "${IMGUI_EMSCRIPTEN_GLFW3}"
     "-sWASM=1"
     "-sALLOW_MEMORY_GROWTH=1"
     "-sNO_EXIT_RUNTIME=0"

examples/example_glfw_wgpu/main.cpp

@@ -102,7 +102,7 @@ int main(int, char**)
     // Setup Platform/Renderer backends
     ImGui_ImplGlfw_InitForOther(window, true);
 #ifdef __EMSCRIPTEN__
-    ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback("#canvas");
+    ImGui_ImplGlfw_InstallEmscriptenCallbacks(window, "#canvas");
 #endif
     ImGui_ImplWGPU_InitInfo init_info;
     init_info.Device = wgpu_device;
@@ -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

@@ -24,7 +24,7 @@
 // Volk headers
 #ifdef IMGUI_IMPL_VULKAN_USE_VOLK
 #define VOLK_IMPLEMENTATION
-#include <Volk/volk.h>
+#include <volk.h>
 #endif
 
 //#define APP_USE_UNLIMITED_FRAME_RATE
@@ -504,19 +504,21 @@ 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?
-        if (g_SwapChainRebuild)
+        int fb_width, fb_height;
+        SDL_GetWindowSize(window, &fb_width, &fb_height);
+        if (fb_width > 0 && fb_height > 0 && (g_SwapChainRebuild || g_MainWindowData.Width != fb_width || g_MainWindowData.Height != fb_height))
         {
-            int width, height;
-            SDL_GetWindowSize(window, &width, &height);
-            if (width > 0 && height > 0)
-            {
-                ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
-                ImGui_ImplVulkanH_CreateOrResizeWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
-                g_MainWindowData.FrameIndex = 0;
-                g_SwapChainRebuild = false;
-            }
+            ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
+            ImGui_ImplVulkanH_CreateOrResizeWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, fb_width, fb_height, g_MinImageCount);
+            g_MainWindowData.FrameIndex = 0;
+            g_SwapChainRebuild = false;
         }
 
         // Start the Dear ImGui frame

examples/example_sdl3_opengl3/Makefile

@@ -37,9 +37,9 @@ LIBS =
 
 ifeq ($(UNAME_S), Linux) #LINUX
 	ECHO_MESSAGE = "Linux"
-	LIBS += $(LINUX_GL_LIBS) -ldl `sdl3-config --libs`
+	LIBS += $(LINUX_GL_LIBS) -ldl `pkg-config sdl3 --libs`
 
-	CXXFLAGS += `sdl3-config --cflags`
+	CXXFLAGS += `pkg-config sdl3 --cflags`
 	CFLAGS = $(CXXFLAGS)
 endif
 
@@ -48,7 +48,7 @@ ifeq ($(UNAME_S), Darwin) #APPLE
 	LIBS += -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo `sdl3-config --libs`
 	LIBS += -L/usr/local/lib -L/opt/local/lib
 
-	CXXFLAGS += `sdl3-config --cflags`
+	CXXFLAGS += `pkg-config sdl3 --cflags`
 	CXXFLAGS += -I/usr/local/include -I/opt/local/include
 	CFLAGS = $(CXXFLAGS)
 endif

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;
@@ -57,9 +57,6 @@ int main(int, char**)
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
 #endif
 
-    // Enable native IME.
-    SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");
-
     // Create window with graphics context
     SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
     SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
@@ -151,6 +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();
@@ -224,7 +226,7 @@ int main(int, char**)
     ImGui_ImplSDL3_Shutdown();
     ImGui::DestroyContext();
 
-    SDL_GL_DeleteContext(gl_context);
+    SDL_GL_DestroyContext(gl_context);
     SDL_DestroyWindow(window);
     SDL_Quit();
 

examples/example_sdl3_sdlrenderer3/Makefile

@@ -26,9 +26,9 @@ LIBS =
 
 ifeq ($(UNAME_S), Linux) #LINUX
 	ECHO_MESSAGE = "Linux"
-	LIBS += -ldl `sdl3-config --libs`
+	LIBS += -ldl `pkg-config sdl3  --libs`
 
-	CXXFLAGS += `sdl3-config --cflags`
+	CXXFLAGS += `pkg-config sdl3 --cflags`
 	CFLAGS = $(CXXFLAGS)
 endif
 
@@ -37,7 +37,7 @@ ifeq ($(UNAME_S), Darwin) #APPLE
 	LIBS += -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo `sdl3-config --libs`
 	LIBS += -L/usr/local/lib -L/opt/local/lib
 
-	CXXFLAGS += `sdl3-config --cflags`
+	CXXFLAGS += `pkg-config sdl3 --cflags`
 	CXXFLAGS += -I/usr/local/include -I/opt/local/include
 	CFLAGS = $(CXXFLAGS)
 endif

examples/example_sdl3_sdlrenderer3/main.cpp

@@ -25,15 +25,12 @@
 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;
     }
 
-    // Enable native IME.
-    SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");
-
     // Create window with SDL_Renderer graphics context
     Uint32 window_flags = SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_HIDDEN;
     SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL3+SDL_Renderer example", 1280, 720, window_flags);
@@ -115,6 +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();
@@ -161,11 +163,14 @@ int main(int, char**)
         // Rendering
         ImGui::Render();
         //SDL_RenderSetScale(renderer, io.DisplayFramebufferScale.x, io.DisplayFramebufferScale.y);
-        SDL_SetRenderDrawColor(renderer, (Uint8)(clear_color.x * 255), (Uint8)(clear_color.y * 255), (Uint8)(clear_color.z * 255), (Uint8)(clear_color.w * 255));
+        SDL_SetRenderDrawColorFloat(renderer, clear_color.x, clear_color.y, clear_color.z, clear_color.w);
         SDL_RenderClear(renderer);
         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/imgui_examples.sln

@@ -29,6 +29,10 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example_win32_opengl3", "ex
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example_sdl2_sdlrenderer2", "example_sdl2_sdlrenderer2\example_sdl2_sdlrenderer2.vcxproj", "{0C0B2BEA-311F-473C-9652-87923EF639E3}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example_sdl3_opengl3", "example_sdl3_opengl3\example_sdl3_opengl3.vcxproj", "{84AAA301-84FE-428B-9E3E-817BC8123C0C}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example_sdl3_sdlrenderer3", "example_sdl3_sdlrenderer3\example_sdl3_sdlrenderer3.vcxproj", "{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
@@ -141,6 +145,22 @@ Global
 		{0C0B2BEA-311F-473C-9652-87923EF639E3}.Release|Win32.Build.0 = Release|Win32
 		{0C0B2BEA-311F-473C-9652-87923EF639E3}.Release|x64.ActiveCfg = Release|x64
 		{0C0B2BEA-311F-473C-9652-87923EF639E3}.Release|x64.Build.0 = Release|x64
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Debug|Win32.ActiveCfg = Debug|Win32
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Debug|Win32.Build.0 = Debug|Win32
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Debug|x64.ActiveCfg = Debug|x64
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Debug|x64.Build.0 = Debug|x64
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Release|Win32.ActiveCfg = Release|Win32
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Release|Win32.Build.0 = Release|Win32
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Release|x64.ActiveCfg = Release|x64
+		{84AAA301-84FE-428B-9E3E-817BC8123C0C}.Release|x64.Build.0 = Release|x64
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Debug|Win32.ActiveCfg = Debug|Win32
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Debug|Win32.Build.0 = Debug|Win32
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Debug|x64.ActiveCfg = Debug|x64
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Debug|x64.Build.0 = Debug|x64
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Release|Win32.ActiveCfg = Release|Win32
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Release|Win32.Build.0 = Release|Win32
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Release|x64.ActiveCfg = Release|x64
+		{C0290D21-3AD2-4A35-ABBC-A2F5F48326DA}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

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

@@ -21,10 +21,11 @@
 
 //---- Define attributes of all API symbols declarations, e.g. for DLL under Windows
 // Using Dear ImGui via a shared library is not recommended, because of function call overhead and because we don't guarantee backward nor forward ABI compatibility.
-// DLL users: heaps and globals are not shared across DLL boundaries! You will need to call SetCurrentContext() + SetAllocatorFunctions()
-// for each static/DLL boundary you are calling from. Read "Context and Memory Allocators" section of imgui.cpp for more details.
-//#define IMGUI_API __declspec( dllexport )
-//#define IMGUI_API __declspec( dllimport )
+// - Windows DLL users: heaps and globals are not shared across DLL boundaries! You will need to call SetCurrentContext() + SetAllocatorFunctions()
+//   for each static/DLL boundary you are calling from. Read "Context and Memory Allocators" section of imgui.cpp for more details.
+//#define IMGUI_API __declspec(dllexport)                   // MSVC Windows: DLL export
+//#define IMGUI_API __declspec(dllimport)                   // MSVC Windows: DLL import
+//#define IMGUI_API __attribute__((visibility("default")))  // GCC/Clang: override visibility when set is hidden
 
 //---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to clean your code of obsolete function/names.
 //#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
@@ -42,6 +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 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)
@@ -49,6 +51,9 @@
 //#define IMGUI_DISABLE_DEFAULT_ALLOCATORS                  // Don't implement default allocators calling malloc()/free() to avoid linking with them. You will need to call ImGui::SetAllocatorFunctions().
 //#define IMGUI_DISABLE_SSE                                 // Disable use of SSE intrinsics even if available
 
+//---- Enable Test Engine / Automation features.
+//#define IMGUI_ENABLE_TEST_ENGINE                          // Enable imgui_test_engine hooks. Generally set automatically by include "imgui_te_config.h", see Test Engine for details.
+
 //---- Include imgui_user.h at the end of imgui.h as a convenience
 // May be convenient for some users to only explicitly include vanilla imgui.h and have extra stuff included.
 //#define IMGUI_INCLUDE_IMGUI_USER_H

imgui_draw.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.90.7
+// dear imgui, v1.91.2
 // (drawing and font code)
 
 /*
@@ -211,11 +211,13 @@ void ImGui::StyleColorsDark(ImGuiStyle* dst)
     colors[ImGuiCol_ResizeGrip]             = ImVec4(0.26f, 0.59f, 0.98f, 0.20f);
     colors[ImGuiCol_ResizeGripHovered]      = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
     colors[ImGuiCol_ResizeGripActive]       = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
-    colors[ImGuiCol_Tab]                    = ImLerp(colors[ImGuiCol_Header],       colors[ImGuiCol_TitleBgActive], 0.80f);
     colors[ImGuiCol_TabHovered]             = colors[ImGuiCol_HeaderHovered];
-    colors[ImGuiCol_TabActive]              = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
-    colors[ImGuiCol_TabUnfocused]           = ImLerp(colors[ImGuiCol_Tab],          colors[ImGuiCol_TitleBg], 0.80f);
-    colors[ImGuiCol_TabUnfocusedActive]     = ImLerp(colors[ImGuiCol_TabActive],    colors[ImGuiCol_TitleBg], 0.40f);
+    colors[ImGuiCol_Tab]                    = ImLerp(colors[ImGuiCol_Header],       colors[ImGuiCol_TitleBgActive], 0.80f);
+    colors[ImGuiCol_TabSelected]            = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
+    colors[ImGuiCol_TabSelectedOverline]    = colors[ImGuiCol_HeaderActive];
+    colors[ImGuiCol_TabDimmed]              = ImLerp(colors[ImGuiCol_Tab],          colors[ImGuiCol_TitleBg], 0.80f);
+    colors[ImGuiCol_TabDimmedSelected]      = ImLerp(colors[ImGuiCol_TabSelected],  colors[ImGuiCol_TitleBg], 0.40f);
+    colors[ImGuiCol_TabDimmedSelectedOverline] = ImVec4(0.50f, 0.50f, 0.50f, 1.00f);
     colors[ImGuiCol_DockingPreview]         = colors[ImGuiCol_HeaderActive] * ImVec4(1.0f, 1.0f, 1.0f, 0.7f);
     colors[ImGuiCol_DockingEmptyBg]         = ImVec4(0.20f, 0.20f, 0.20f, 1.00f);
     colors[ImGuiCol_PlotLines]              = ImVec4(0.61f, 0.61f, 0.61f, 1.00f);
@@ -227,6 +229,7 @@ void ImGui::StyleColorsDark(ImGuiStyle* dst)
     colors[ImGuiCol_TableBorderLight]       = ImVec4(0.23f, 0.23f, 0.25f, 1.00f);   // Prefer using Alpha=1.0 here
     colors[ImGuiCol_TableRowBg]             = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
     colors[ImGuiCol_TableRowBgAlt]          = ImVec4(1.00f, 1.00f, 1.00f, 0.06f);
+    colors[ImGuiCol_TextLink]               = colors[ImGuiCol_HeaderActive];
     colors[ImGuiCol_TextSelectedBg]         = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
     colors[ImGuiCol_DragDropTarget]         = ImVec4(1.00f, 1.00f, 0.00f, 0.90f);
     colors[ImGuiCol_NavHighlight]           = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
@@ -273,11 +276,13 @@ void ImGui::StyleColorsClassic(ImGuiStyle* dst)
     colors[ImGuiCol_ResizeGrip]             = ImVec4(1.00f, 1.00f, 1.00f, 0.10f);
     colors[ImGuiCol_ResizeGripHovered]      = ImVec4(0.78f, 0.82f, 1.00f, 0.60f);
     colors[ImGuiCol_ResizeGripActive]       = ImVec4(0.78f, 0.82f, 1.00f, 0.90f);
-    colors[ImGuiCol_Tab]                    = ImLerp(colors[ImGuiCol_Header],       colors[ImGuiCol_TitleBgActive], 0.80f);
     colors[ImGuiCol_TabHovered]             = colors[ImGuiCol_HeaderHovered];
-    colors[ImGuiCol_TabActive]              = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
-    colors[ImGuiCol_TabUnfocused]           = ImLerp(colors[ImGuiCol_Tab],          colors[ImGuiCol_TitleBg], 0.80f);
-    colors[ImGuiCol_TabUnfocusedActive]     = ImLerp(colors[ImGuiCol_TabActive],    colors[ImGuiCol_TitleBg], 0.40f);
+    colors[ImGuiCol_Tab]                    = ImLerp(colors[ImGuiCol_Header],       colors[ImGuiCol_TitleBgActive], 0.80f);
+    colors[ImGuiCol_TabSelected]            = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
+    colors[ImGuiCol_TabSelectedOverline]    = colors[ImGuiCol_HeaderActive];
+    colors[ImGuiCol_TabDimmed]              = ImLerp(colors[ImGuiCol_Tab],          colors[ImGuiCol_TitleBg], 0.80f);
+    colors[ImGuiCol_TabDimmedSelected]      = ImLerp(colors[ImGuiCol_TabSelected],  colors[ImGuiCol_TitleBg], 0.40f);
+    colors[ImGuiCol_TabDimmedSelectedOverline] = colors[ImGuiCol_HeaderActive];
     colors[ImGuiCol_DockingPreview]         = colors[ImGuiCol_Header] * ImVec4(1.0f, 1.0f, 1.0f, 0.7f);
     colors[ImGuiCol_DockingEmptyBg]         = ImVec4(0.20f, 0.20f, 0.20f, 1.00f);
     colors[ImGuiCol_PlotLines]              = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
@@ -289,6 +294,7 @@ void ImGui::StyleColorsClassic(ImGuiStyle* dst)
     colors[ImGuiCol_TableBorderLight]       = ImVec4(0.26f, 0.26f, 0.28f, 1.00f);   // Prefer using Alpha=1.0 here
     colors[ImGuiCol_TableRowBg]             = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
     colors[ImGuiCol_TableRowBgAlt]          = ImVec4(1.00f, 1.00f, 1.00f, 0.07f);
+    colors[ImGuiCol_TextLink]               = colors[ImGuiCol_HeaderActive];
     colors[ImGuiCol_TextSelectedBg]         = ImVec4(0.00f, 0.00f, 1.00f, 0.35f);
     colors[ImGuiCol_DragDropTarget]         = ImVec4(1.00f, 1.00f, 0.00f, 0.90f);
     colors[ImGuiCol_NavHighlight]           = colors[ImGuiCol_HeaderHovered];
@@ -336,11 +342,13 @@ void ImGui::StyleColorsLight(ImGuiStyle* dst)
     colors[ImGuiCol_ResizeGrip]             = ImVec4(0.35f, 0.35f, 0.35f, 0.17f);
     colors[ImGuiCol_ResizeGripHovered]      = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
     colors[ImGuiCol_ResizeGripActive]       = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
-    colors[ImGuiCol_Tab]                    = ImLerp(colors[ImGuiCol_Header],       colors[ImGuiCol_TitleBgActive], 0.90f);
     colors[ImGuiCol_TabHovered]             = colors[ImGuiCol_HeaderHovered];
-    colors[ImGuiCol_TabActive]              = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
-    colors[ImGuiCol_TabUnfocused]           = ImLerp(colors[ImGuiCol_Tab],          colors[ImGuiCol_TitleBg], 0.80f);
-    colors[ImGuiCol_TabUnfocusedActive]     = ImLerp(colors[ImGuiCol_TabActive],    colors[ImGuiCol_TitleBg], 0.40f);
+    colors[ImGuiCol_Tab]                    = ImLerp(colors[ImGuiCol_Header],       colors[ImGuiCol_TitleBgActive], 0.90f);
+    colors[ImGuiCol_TabSelected]            = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
+    colors[ImGuiCol_TabSelectedOverline]    = colors[ImGuiCol_HeaderActive];
+    colors[ImGuiCol_TabDimmed]              = ImLerp(colors[ImGuiCol_Tab],          colors[ImGuiCol_TitleBg], 0.80f);
+    colors[ImGuiCol_TabDimmedSelected]      = ImLerp(colors[ImGuiCol_TabSelected],  colors[ImGuiCol_TitleBg], 0.40f);
+    colors[ImGuiCol_TabDimmedSelectedOverline] = ImVec4(0.26f, 0.59f, 1.00f, 1.00f);
     colors[ImGuiCol_DockingPreview]         = colors[ImGuiCol_Header] * ImVec4(1.0f, 1.0f, 1.0f, 0.7f);
     colors[ImGuiCol_DockingEmptyBg]         = ImVec4(0.20f, 0.20f, 0.20f, 1.00f);
     colors[ImGuiCol_PlotLines]              = ImVec4(0.39f, 0.39f, 0.39f, 1.00f);
@@ -352,6 +360,7 @@ void ImGui::StyleColorsLight(ImGuiStyle* dst)
     colors[ImGuiCol_TableBorderLight]       = ImVec4(0.68f, 0.68f, 0.74f, 1.00f);   // Prefer using Alpha=1.0 here
     colors[ImGuiCol_TableRowBg]             = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
     colors[ImGuiCol_TableRowBgAlt]          = ImVec4(0.30f, 0.30f, 0.30f, 0.09f);
+    colors[ImGuiCol_TextLink]               = colors[ImGuiCol_HeaderActive];
     colors[ImGuiCol_TextSelectedBg]         = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
     colors[ImGuiCol_DragDropTarget]         = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
     colors[ImGuiCol_NavHighlight]           = colors[ImGuiCol_HeaderHovered];
@@ -523,7 +532,6 @@ void ImDrawList::_OnChangedClipRect()
         CmdBuffer.pop_back();
         return;
     }
-
     curr_cmd->ClipRect = _CmdHeader.ClipRect;
 }
 
@@ -546,7 +554,6 @@ void ImDrawList::_OnChangedTextureID()
         CmdBuffer.pop_back();
         return;
     }
-
     curr_cmd->TextureId = _CmdHeader.TextureId;
 }
 
@@ -622,6 +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.
@@ -2489,13 +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();
@@ -2812,8 +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_tables.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.90.7
+// 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)
@@ -412,8 +412,8 @@ bool    ImGui::BeginTableEx(const char* name, ImGuiID id, int columns_count, ImG
             SetNextWindowScroll(ImVec2(0.0f, 0.0f));
 
         // Create scrolling region (without border and zero window padding)
-        ImGuiWindowFlags child_flags = (flags & ImGuiTableFlags_ScrollX) ? ImGuiWindowFlags_HorizontalScrollbar : ImGuiWindowFlags_None;
-        BeginChildEx(name, instance_id, outer_rect.GetSize(), false, child_flags);
+        ImGuiWindowFlags child_window_flags = (flags & ImGuiTableFlags_ScrollX) ? ImGuiWindowFlags_HorizontalScrollbar : ImGuiWindowFlags_None;
+        BeginChildEx(name, instance_id, outer_rect.GetSize(), ImGuiChildFlags_None, child_window_flags);
         table->InnerWindow = g.CurrentWindow;
         table->WorkRect = table->InnerWindow->WorkRect;
         table->OuterRect = table->InnerWindow->Rect();
@@ -437,6 +437,7 @@ bool    ImGui::BeginTableEx(const char* name, ImGuiID id, int columns_count, ImG
         // For non-scrolling tables, WorkRect == OuterRect == InnerRect.
         // But at this point we do NOT have a correct value for .Max.y (unless a height has been explicitly passed in). It will only be updated in EndTable().
         table->WorkRect = table->OuterRect = table->InnerRect = outer_rect;
+        table->HasScrollbarYPrev = table->HasScrollbarYCurr = false;
     }
 
     // Push a standardized ID for both child-using and not-child-using tables
@@ -459,16 +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
@@ -496,7 +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()
@@ -854,7 +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)
@@ -1058,16 +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;
 
@@ -1116,8 +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
@@ -1248,7 +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()
@@ -1490,9 +1503,13 @@ void    ImGui::EndTable()
     }
     else if (temp_data->UserOuterSize.x <= 0.0f)
     {
-        const float decoration_size = table->TempData->AngledHeadersExtraWidth + ((table->Flags & ImGuiTableFlags_ScrollX) ? inner_window->ScrollbarSizes.x : 0.0f);
-        outer_window->DC.IdealMaxPos.x = ImMax(outer_window->DC.IdealMaxPos.x, table->OuterRect.Min.x + table->ColumnsAutoFitWidth + decoration_size - temp_data->UserOuterSize.x);
-        outer_window->DC.CursorMaxPos.x = ImMax(backup_outer_max_pos.x, ImMin(table->OuterRect.Max.x, table->OuterRect.Min.x + table->ColumnsAutoFitWidth));
+        // Some references for this: #7651 + tests "table_reported_size", "table_reported_size_outer" equivalent Y block
+        // - Checking for ImGuiTableFlags_ScrollX/ScrollY flag makes us a frame ahead when disabling those flags.
+        // - FIXME-TABLE: Would make sense to pre-compute expected scrollbar visibility/sizes to generally save a frame of feedback.
+        const float inner_content_max_x = table->OuterRect.Min.x + table->ColumnsAutoFitWidth; // Slightly misleading name but used for code symmetry with inner_content_max_y
+        const float decoration_size = table->TempData->AngledHeadersExtraWidth + ((table->Flags & ImGuiTableFlags_ScrollY) ? inner_window->ScrollbarSizes.x : 0.0f);
+        outer_window->DC.IdealMaxPos.x = ImMax(outer_window->DC.IdealMaxPos.x, inner_content_max_x + decoration_size - temp_data->UserOuterSize.x);
+        outer_window->DC.CursorMaxPos.x = ImMax(backup_outer_max_pos.x, ImMin(table->OuterRect.Max.x, inner_content_max_x + decoration_size));
     }
     else
     {
@@ -1500,9 +1517,9 @@ void    ImGui::EndTable()
     }
     if (temp_data->UserOuterSize.y <= 0.0f)
     {
-        const float decoration_size = (table->Flags & ImGuiTableFlags_ScrollY) ? inner_window->ScrollbarSizes.y : 0.0f;
+        const float decoration_size = (table->Flags & ImGuiTableFlags_ScrollX) ? inner_window->ScrollbarSizes.y : 0.0f;
         outer_window->DC.IdealMaxPos.y = ImMax(outer_window->DC.IdealMaxPos.y, inner_content_max_y + decoration_size - temp_data->UserOuterSize.y);
-        outer_window->DC.CursorMaxPos.y = ImMax(backup_outer_max_pos.y, ImMin(table->OuterRect.Max.y, inner_content_max_y));
+        outer_window->DC.CursorMaxPos.y = ImMax(backup_outer_max_pos.y, ImMin(table->OuterRect.Max.y, inner_content_max_y + decoration_size));
     }
     else
     {
@@ -1991,34 +2008,37 @@ void ImGui::TableEndRow(ImGuiTable* table)
     // We need to do that in TableEndRow() instead of TableBeginRow() so the list clipper can mark end of row and
     // get the new cursor position.
     if (unfreeze_rows_request)
+    {
         for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
             table->Columns[column_n].NavLayerCurrent = ImGuiNavLayer_Main;
-    if (unfreeze_rows_actual)
-    {
-        IM_ASSERT(table->IsUnfrozenRows == false);
-        const float y0 = ImMax(table->RowPosY2 + 1, window->InnerClipRect.Min.y);
-        table->IsUnfrozenRows = true;
+        const float y0 = ImMax(table->RowPosY2 + 1, table->InnerClipRect.Min.y);
         table_instance->LastFrozenHeight = y0 - table->OuterRect.Min.y;
 
-        // 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->Bg2DrawChannelCurrent = table->Bg2DrawChannelUnfrozen;
-        IM_ASSERT(table->Bg2ClipRectForDrawCmd.Min.y <= table->Bg2ClipRectForDrawCmd.Max.y);
-
-        float row_height = table->RowPosY2 - table->RowPosY1;
-        table->RowPosY2 = window->DC.CursorPos.y = table->WorkRect.Min.y + table->RowPosY2 - table->OuterRect.Min.y;
-        table->RowPosY1 = table->RowPosY2 - row_height;
-        for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
+        if (unfreeze_rows_actual)
         {
-            ImGuiTableColumn* column = &table->Columns[column_n];
-            column->DrawChannelCurrent = column->DrawChannelUnfrozen;
-            column->ClipRect.Min.y = table->Bg2ClipRectForDrawCmd.Min.y;
-        }
+            IM_ASSERT(table->IsUnfrozenRows == false);
+            table->IsUnfrozenRows = true;
 
-        // Update cliprect ahead of TableBeginCell() so clipper can access to new ClipRect->Min.y
-        SetWindowClipRectBeforeSetChannel(window, table->Columns[0].ClipRect);
-        table->DrawSplitter->SetCurrentChannel(window->DrawList, table->Columns[0].DrawChannelCurrent);
+            // BgClipRect starts as table->InnerClipRect, reduce it now and make BgClipRectForDrawCmd == BgClipRect
+            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);
+
+            float row_height = table->RowPosY2 - table->RowPosY1;
+            table->RowPosY2 = window->DC.CursorPos.y = table->WorkRect.Min.y + table->RowPosY2 - table->OuterRect.Min.y;
+            table->RowPosY1 = table->RowPosY2 - row_height;
+            for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
+            {
+                ImGuiTableColumn* column = &table->Columns[column_n];
+                column->DrawChannelCurrent = column->DrawChannelUnfrozen;
+                column->ClipRect.Min.y = table->Bg2ClipRectForDrawCmd.Min.y;
+            }
+
+            // Update cliprect ahead of TableBeginCell() so clipper can access to new ClipRect->Min.y
+            SetWindowClipRectBeforeSetChannel(window, table->Columns[0].ClipRect);
+            table->DrawSplitter->SetCurrentChannel(window->DrawList, table->Columns[0].DrawChannelCurrent);
+        }
     }
 
     if (!(table->RowFlags & ImGuiTableRowFlags_Headers))
@@ -2187,8 +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;
@@ -2250,7 +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;
@@ -2735,7 +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)
         {
@@ -2795,7 +2815,7 @@ ImGuiTableSortSpecs* ImGui::TableGetSortSpecs()
 static inline ImGuiSortDirection TableGetColumnAvailSortDirection(ImGuiTableColumn* column, int n)
 {
     IM_ASSERT(n < column->SortDirectionsAvailCount);
-    return (column->SortDirectionsAvailList >> (n << 1)) & 0x03;
+    return (ImGuiSortDirection)((column->SortDirectionsAvailList >> (n << 1)) & 0x03);
 }
 
 // Fix sort direction if currently set on a value which is unavailable (e.g. activating NoSortAscending/NoSortDescending)
@@ -2949,7 +2969,7 @@ void ImGui::TableSortSpecsBuild(ImGuiTable* table)
             sort_spec->ColumnUserID = column->UserID;
             sort_spec->ColumnIndex = (ImGuiTableColumnIdx)column_n;
             sort_spec->SortOrder = (ImGuiTableColumnIdx)column->SortOrder;
-            sort_spec->SortDirection = column->SortDirection;
+            sort_spec->SortDirection = (ImGuiSortDirection)column->SortDirection;
         }
 
     table->SortSpecs.Specs = sort_specs;
@@ -2999,7 +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()
 {
@@ -3007,7 +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);
 
@@ -3024,8 +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);
@@ -3264,7 +3285,7 @@ void ImGui::TableAngledHeadersRowEx(ImGuiID row_id, float angle, float max_label
     ButtonBehavior(row_r, row_id, NULL, NULL);
     KeepAliveID(row_id);
 
-    const float ascent_scaled = g.Font->Ascent * (g.FontSize / g.Font->FontSize); // FIXME: Standardize those scaling factors better
+    const float ascent_scaled = g.Font->Ascent * g.FontScale; // FIXME: Standardize those scaling factors better
     const float line_off_for_ascent_x = (ImMax((g.FontSize - ascent_scaled) * 0.5f, 0.0f) / -sin_a) * (flip_label ? -1.0f : 1.0f);
     const ImVec2 padding = g.Style.CellPadding; // We will always use swapped component
     const ImVec2 align = g.Style.TableAngledHeadersTextAlign;
@@ -3466,7 +3487,7 @@ void ImGui::TableDrawDefaultContextMenu(ImGuiTable* table, ImGuiTableFlags flags
             Separator();
         want_separator = true;
 
-        PushItemFlag(ImGuiItemFlags_SelectableDontClosePopup, true);
+        PushItemFlag(ImGuiItemFlags_AutoClosePopups, false);
         for (int other_column_n = 0; other_column_n < table->ColumnsCount; other_column_n++)
         {
             ImGuiTableColumn* other_column = &table->Columns[other_column_n];
@@ -4388,7 +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;
             }
@@ -4420,12 +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

@@ -357,7 +357,7 @@ namespace
         case FT_PIXEL_MODE_BGRA:
             {
                 // FIXME: Converting pre-multiplied alpha to straight. Doesn't smell good.
-                #define DE_MULTIPLY(color, alpha) (ImU32)(255.0f * (float)color / (float)alpha + 0.5f)
+                #define DE_MULTIPLY(color, alpha) ImMin((ImU32)(255.0f * (float)color / (float)(alpha + FLT_MIN) + 0.5f), 255u)
                 if (multiply_table == nullptr)
                 {
                     for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
@@ -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++;