Allow building the tray subsystem without the video subsystem

Fixes https://github.com/libsdl-org/SDL/issues/13235

CMakeLists.txt

@@ -253,6 +253,7 @@ define_sdl_subsystem(Hidapi)
 define_sdl_subsystem(Power)
 define_sdl_subsystem(Sensor)
 define_sdl_subsystem(Dialog)
+define_sdl_subsystem(Tray)
 
 cmake_dependent_option(SDL_FRAMEWORK "Build SDL libraries as Apple Framework" OFF "APPLE" OFF)
 if(SDL_FRAMEWORK)
@@ -410,6 +411,7 @@ if (NGAGE)
   set(SDL_DUMMYVIDEO       OFF)
   set(SDL_OFFSCREEN        OFF)
   set(SDL_RENDER_GPU       OFF)
+  set(SDL_TRAY             OFF)
   set(SDL_VIRTUAL_JOYSTICK OFF)
 endif()
 
@@ -1752,7 +1754,9 @@ elseif(UNIX AND NOT APPLE AND NOT RISCOS AND NOT HAIKU)
     CheckVivante()
     CheckVulkan()
     CheckQNXScreen()
+  endif()
 
+  if(SDL_TRAY)
     sdl_glob_sources(
       "${SDL3_SOURCE_DIR}/src/tray/unix/*.c"
       "${SDL3_SOURCE_DIR}/src/tray/unix/*.h"
@@ -2330,7 +2334,9 @@ elseif(WINDOWS)
         set(HAVE_RENDER_VULKAN TRUE)
       endif()
     endif()
+  endif()
 
+  if(SDL_TRAY)
     sdl_glob_sources("${SDL3_SOURCE_DIR}/src/tray/windows/*.c")
     set(HAVE_SDL_TRAY TRUE)
   endif()
@@ -2646,11 +2652,11 @@ elseif(APPLE)
         endif()
       endif()
     endif()
+  endif()
 
-    if(MACOS)
-      sdl_glob_sources("${SDL3_SOURCE_DIR}/src/tray/cocoa/*.m")
-      set(HAVE_SDL_TRAY TRUE)
-    endif()
+  if(SDL_TRAY AND MACOS)
+    sdl_glob_sources("${SDL3_SOURCE_DIR}/src/tray/cocoa/*.m")
+    set(HAVE_SDL_TRAY TRUE)
   endif()
 
   # Minimum version for $<LINK_LIBRARY:feature,library-list>

VisualC-GDK/SDL/SDL.vcxproj

@@ -889,7 +889,6 @@
     <ClCompile Include="..\..\src\video\SDL_video_unsupported.c" />
     <ClCompile Include="..\..\src\video\SDL_vulkan_utils.c" />
     <ClCompile Include="..\..\src\video\SDL_yuv.c" />
-    <ClCompile Include="..\..\src\video\windows\SDL_surface_utils.c" />
     <ClCompile Include="..\..\src\video\windows\SDL_windowsclipboard.c" />
     <ClCompile Include="..\..\src\video\windows\SDL_windowsevents.c" />
     <ClCompile Include="..\..\src\video\windows\SDL_windowsframebuffer.c" />

VisualC-GDK/SDL/SDL.vcxproj.filters

@@ -191,7 +191,6 @@
     <ClCompile Include="..\..\src\video\SDL_video_unsupported.c" />
     <ClCompile Include="..\..\src\video\SDL_vulkan_utils.c" />
     <ClCompile Include="..\..\src\video\SDL_yuv.c" />
-    <ClCompile Include="..\..\src\video\windows\SDL_surface_utils.c" />
     <ClCompile Include="..\..\src\video\windows\SDL_windowsclipboard.c" />
     <ClCompile Include="..\..\src\video\windows\SDL_windowsevents.c" />
     <ClCompile Include="..\..\src\video\windows\SDL_windowsframebuffer.c" />

VisualC/SDL/SDL.vcxproj

@@ -744,7 +744,6 @@
     <ClCompile Include="..\..\src\video\SDL_video_unsupported.c" />
     <ClCompile Include="..\..\src\video\SDL_vulkan_utils.c" />
     <ClCompile Include="..\..\src\video\SDL_yuv.c" />
-    <ClCompile Include="..\..\src\video\windows\SDL_surface_utils.c" />
     <ClCompile Include="..\..\src\video\windows\SDL_windowsclipboard.c" />
     <ClCompile Include="..\..\src\video\windows\SDL_windowsevents.c" />
     <ClCompile Include="..\..\src\video\windows\SDL_windowsframebuffer.c" />
@@ -775,4 +774,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>

VisualC/SDL/SDL.vcxproj.filters

@@ -1356,9 +1356,6 @@
     <ClCompile Include="..\..\src\video\dummy\SDL_nullvideo.c">
       <Filter>video\dummy</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\src\video\windows\SDL_surface_utils.c">
-      <Filter>video\windows</Filter>
-    </ClCompile>
     <ClCompile Include="..\..\src\video\windows\SDL_windowsclipboard.c">
       <Filter>video\windows</Filter>
     </ClCompile>
@@ -1618,4 +1615,4 @@
   <ItemGroup>
     <ResourceCompile Include="..\..\src\core\windows\version.rc" />
   </ItemGroup>
-</Project>
+</Project>

include/build_config/SDL_build_config.h.cmake

@@ -540,6 +540,9 @@
 /* Enable dialog subsystem */
 #cmakedefine SDL_DIALOG_DUMMY 1
 
+/* Enable tray subsystem */
+#cmakedefine SDL_TRAY_DUMMY 1
+
 /* Enable assembly routines */
 #cmakedefine SDL_ALTIVEC_BLITTERS 1
 

include/build_config/SDL_build_config_android.h

@@ -208,6 +208,9 @@
 #define SDL_CAMERA_DRIVER_ANDROID 1
 #endif /* SDL_CAMERA_DISABLED */
 
+/* Enable tray subsystem */
+#define SDL_TRAY_DUMMY 1
+
 /* Enable nl_langinfo and high-res file times on version 26 and higher. */
 #if __ANDROID_API__ >= 26
 #define HAVE_NL_LANGINFO 1

include/build_config/SDL_build_config_ios.h

@@ -223,4 +223,7 @@
 /* Enable dialog subsystem */
 #define SDL_DIALOG_DUMMY 1
 
+/* Enable tray subsystem */
+#define SDL_TRAY_DUMMY 1
+
 #endif /* SDL_build_config_ios_h_ */

include/build_config/SDL_build_config_minimal.h

@@ -98,4 +98,7 @@ typedef unsigned int uintptr_t;
 /* Enable dialog subsystem */
 #define SDL_DIALOG_DUMMY 1
 
+/* Enable tray subsystem */
+#define SDL_TRAY_DUMMY 1
+
 #endif /* SDL_build_config_minimal_h_ */

include/build_config/SDL_build_config_xbox.h

@@ -220,4 +220,7 @@
 /* Enable dialog subsystem */
 #define SDL_DIALOG_DUMMY 1
 
+/* Enable tray subsystem */
+#define SDL_TRAY_DUMMY 1
+
 #endif /* SDL_build_config_wingdk_h_ */

src/core/windows/SDL_windows.c

@@ -24,6 +24,8 @@
 
 #include "SDL_windows.h"
 
+#include "../../video/SDL_surface_c.h"
+
 #include <objbase.h> // for CoInitialize/CoUninitialize (Win32 only)
 #ifdef HAVE_ROAPI_H
 #include <roapi.h> // For RoInitialize/RoUninitialize (Win32 only)
@@ -53,6 +55,44 @@ typedef enum RO_INIT_TYPE
 #define WC_ERR_INVALID_CHARS 0x00000080
 #endif
 
+// Dark mode support
+typedef enum {
+    UXTHEME_APPMODE_DEFAULT,
+    UXTHEME_APPMODE_ALLOW_DARK,
+    UXTHEME_APPMODE_FORCE_DARK,
+    UXTHEME_APPMODE_FORCE_LIGHT,
+    UXTHEME_APPMODE_MAX
+} UxthemePreferredAppMode;
+
+typedef enum {
+    WCA_UNDEFINED = 0,
+    WCA_USEDARKMODECOLORS = 26,
+    WCA_LAST = 27
+} WINDOWCOMPOSITIONATTRIB;
+
+typedef struct {
+    WINDOWCOMPOSITIONATTRIB Attrib;
+    PVOID pvData;
+    SIZE_T cbData;
+} WINDOWCOMPOSITIONATTRIBDATA;
+
+typedef struct {
+    ULONG dwOSVersionInfoSize;
+    ULONG dwMajorVersion;
+    ULONG dwMinorVersion;
+    ULONG dwBuildNumber;
+    ULONG dwPlatformId;
+    WCHAR szCSDVersion[128];
+} NT_OSVERSIONINFOW;
+
+typedef bool (WINAPI *ShouldAppsUseDarkMode_t)(void);
+typedef void (WINAPI *AllowDarkModeForWindow_t)(HWND, bool);
+typedef void (WINAPI *AllowDarkModeForApp_t)(bool);
+typedef void (WINAPI *RefreshImmersiveColorPolicyState_t)(void);
+typedef UxthemePreferredAppMode (WINAPI *SetPreferredAppMode_t)(UxthemePreferredAppMode);
+typedef BOOL (WINAPI *SetWindowCompositionAttribute_t)(HWND, const WINDOWCOMPOSITIONATTRIBDATA *);
+typedef void (NTAPI *RtlGetVersion_t)(NT_OSVERSIONINFOW *);
+
 // Fake window to help with DirectInput events.
 HWND SDL_HelperWindow = NULL;
 static const TCHAR *SDL_HelperWindowClassName = TEXT("SDLHelperWindowInputCatcher");
@@ -408,6 +448,148 @@ bool WIN_WindowRectValid(const RECT *rect)
     return (rect->right > 0);
 }
 
+void WIN_UpdateDarkModeForHWND(HWND hwnd)
+{
+#if !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
+    HMODULE ntdll = LoadLibrary(TEXT("ntdll.dll"));
+    if (!ntdll) {
+        return;
+    }
+    // There is no function to get Windows build number, so let's get it here via RtlGetVersion
+    RtlGetVersion_t RtlGetVersionFunc = (RtlGetVersion_t)GetProcAddress(ntdll, "RtlGetVersion");
+    NT_OSVERSIONINFOW os_info;
+    os_info.dwOSVersionInfoSize = sizeof(NT_OSVERSIONINFOW);
+    os_info.dwBuildNumber = 0;
+    if (RtlGetVersionFunc) {
+        RtlGetVersionFunc(&os_info);
+    }
+    FreeLibrary(ntdll);
+    os_info.dwBuildNumber &= ~0xF0000000;
+    if (os_info.dwBuildNumber < 17763) {
+        // Too old to support dark mode
+        return;
+    }
+    HMODULE uxtheme = LoadLibrary(TEXT("uxtheme.dll"));
+    if (!uxtheme) {
+        return;
+    }
+    RefreshImmersiveColorPolicyState_t RefreshImmersiveColorPolicyStateFunc = (RefreshImmersiveColorPolicyState_t)GetProcAddress(uxtheme, MAKEINTRESOURCEA(104));
+    ShouldAppsUseDarkMode_t ShouldAppsUseDarkModeFunc = (ShouldAppsUseDarkMode_t)GetProcAddress(uxtheme, MAKEINTRESOURCEA(132));
+    AllowDarkModeForWindow_t AllowDarkModeForWindowFunc = (AllowDarkModeForWindow_t)GetProcAddress(uxtheme, MAKEINTRESOURCEA(133));
+    if (os_info.dwBuildNumber < 18362) {
+        AllowDarkModeForApp_t AllowDarkModeForAppFunc = (AllowDarkModeForApp_t)GetProcAddress(uxtheme, MAKEINTRESOURCEA(135));
+        if (AllowDarkModeForAppFunc) {
+            AllowDarkModeForAppFunc(true);
+        }
+    } else {
+        SetPreferredAppMode_t SetPreferredAppModeFunc = (SetPreferredAppMode_t)GetProcAddress(uxtheme, MAKEINTRESOURCEA(135));
+        if (SetPreferredAppModeFunc) {
+            SetPreferredAppModeFunc(UXTHEME_APPMODE_ALLOW_DARK);
+        }
+    }
+    if (RefreshImmersiveColorPolicyStateFunc) {
+        RefreshImmersiveColorPolicyStateFunc();
+    }
+    if (AllowDarkModeForWindowFunc) {
+        AllowDarkModeForWindowFunc(hwnd, true);
+    }
+    BOOL value;
+    // Check dark mode using ShouldAppsUseDarkMode, but use SDL_GetSystemTheme as a fallback
+    if (ShouldAppsUseDarkModeFunc) {
+        value = ShouldAppsUseDarkModeFunc() ? TRUE : FALSE;
+    } else {
+        value = (SDL_GetSystemTheme() == SDL_SYSTEM_THEME_DARK) ? TRUE : FALSE;
+    }
+    FreeLibrary(uxtheme);
+    if (os_info.dwBuildNumber < 18362) {
+        SetProp(hwnd, TEXT("UseImmersiveDarkModeColors"), SDL_reinterpret_cast(HANDLE, SDL_static_cast(INT_PTR, value)));
+    } else {
+        HMODULE user32 = GetModuleHandle(TEXT("user32.dll"));
+        if (user32) {
+            SetWindowCompositionAttribute_t SetWindowCompositionAttributeFunc = (SetWindowCompositionAttribute_t)GetProcAddress(user32, "SetWindowCompositionAttribute");
+            if (SetWindowCompositionAttributeFunc) {
+                WINDOWCOMPOSITIONATTRIBDATA data = { WCA_USEDARKMODECOLORS, &value, sizeof(value) };
+                SetWindowCompositionAttributeFunc(hwnd, &data);
+            }
+        }
+    }
+#endif
+}
+
+HICON WIN_CreateIconFromSurface(SDL_Surface *surface)
+{
+#if !(defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES))
+    SDL_Surface *s = SDL_ConvertSurface(surface, SDL_PIXELFORMAT_ARGB8888);
+    if (!s) {
+        return NULL;
+    }
+
+    /* The dimensions will be needed after s is freed */
+    const int width = s->w;
+    const int height = s->h;
+
+    BITMAPINFO bmpInfo;
+    SDL_zero(bmpInfo);
+    bmpInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+    bmpInfo.bmiHeader.biWidth = width;
+    bmpInfo.bmiHeader.biHeight = -height; /* Top-down bitmap */
+    bmpInfo.bmiHeader.biPlanes = 1;
+    bmpInfo.bmiHeader.biBitCount = 32;
+    bmpInfo.bmiHeader.biCompression = BI_RGB;
+
+    HDC hdc = GetDC(NULL);
+    void *pBits = NULL;
+    HBITMAP hBitmap = CreateDIBSection(hdc, &bmpInfo, DIB_RGB_COLORS, &pBits, NULL, 0);
+    if (!hBitmap) {
+        ReleaseDC(NULL, hdc);
+        SDL_DestroySurface(s);
+        return NULL;
+    }
+
+    SDL_memcpy(pBits, s->pixels, width * height * 4);
+
+    SDL_DestroySurface(s);
+
+    HBITMAP hMask = CreateBitmap(width, height, 1, 1, NULL);
+    if (!hMask) {
+        DeleteObject(hBitmap);
+        ReleaseDC(NULL, hdc);
+        return NULL;
+    }
+
+    HDC hdcMem = CreateCompatibleDC(hdc);
+    HGDIOBJ oldBitmap = SelectObject(hdcMem, hMask);
+
+    for (int y = 0; y < height; y++) {
+        for (int x = 0; x < width; x++) {
+            BYTE* pixel = (BYTE*)pBits + (y * width + x) * 4;
+            BYTE alpha = pixel[3];
+            COLORREF maskColor = (alpha == 0) ? RGB(0, 0, 0) : RGB(255, 255, 255);
+            SetPixel(hdcMem, x, y, maskColor);
+        }
+    }
+
+    ICONINFO iconInfo;
+    iconInfo.fIcon = TRUE;
+    iconInfo.xHotspot = 0;
+    iconInfo.yHotspot = 0;
+    iconInfo.hbmMask = hMask;
+    iconInfo.hbmColor = hBitmap;
+
+    HICON hIcon = CreateIconIndirect(&iconInfo);
+
+    SelectObject(hdcMem, oldBitmap);
+    DeleteDC(hdcMem);
+    DeleteObject(hBitmap);
+    DeleteObject(hMask);
+    ReleaseDC(NULL, hdc);
+
+    return hIcon;
+#else
+    return NULL;
+#endif
+}
+
 // Some GUIDs we need to know without linking to libraries that aren't available before Vista.
 /* *INDENT-OFF* */ // clang-format off
 static const GUID SDL_KSDATAFORMAT_SUBTYPE_PCM = { 0x00000001, 0x0000, 0x0010,{ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 } };

src/core/windows/SDL_windows.h

@@ -157,7 +157,11 @@ extern void WIN_RECTToRect(const RECT *winrect, SDL_Rect *sdlrect);
 extern void WIN_RectToRECT(const SDL_Rect *sdlrect, RECT *winrect);
 
 // Returns false if a window client rect is not valid
-bool WIN_WindowRectValid(const RECT *rect);
+extern bool WIN_WindowRectValid(const RECT *rect);
+
+extern void WIN_UpdateDarkModeForHWND(HWND hwnd);
+
+extern HICON WIN_CreateIconFromSurface(SDL_Surface *surface);
 
 extern SDL_AudioFormat SDL_WaveFormatExToSDLFormat(WAVEFORMATEX *waveformat);
 

src/tray/dummy/SDL_tray.c

@@ -21,7 +21,7 @@
 
 #include "SDL_internal.h"
 
-#ifndef SDL_PLATFORM_MACOS
+#ifdef SDL_TRAY_DUMMY
 
 #include "../SDL_tray_utils.h"
 
@@ -140,4 +140,4 @@ void SDL_DestroyTray(SDL_Tray *tray)
 {
 }
 
-#endif // !SDL_PLATFORM_MACOS
+#endif // SDL_TRAY_DUMMY

src/tray/windows/SDL_tray.c

@@ -23,13 +23,10 @@
 
 #include "../SDL_tray_utils.h"
 #include "../../core/windows/SDL_windows.h"
-#include "../../video/windows/SDL_windowswindow.h"
 
 #include <windowsx.h>
 #include <shellapi.h>
 
-#include "../../video/windows/SDL_surface_utils.h"
-
 #ifndef NOTIFYICON_VERSION_4
 #define NOTIFYICON_VERSION_4 4
 #endif
@@ -115,7 +112,7 @@ LRESULT CALLBACK TrayWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lPar
         case WM_TRAYICON:
             if (LOWORD(lParam) == WM_CONTEXTMENU || LOWORD(lParam) == WM_LBUTTONUP) {
                 SetForegroundWindow(hwnd);
-                
+
                 if (tray->menu) {
                     TrackPopupMenu(tray->menu->hMenu, TPM_BOTTOMALIGN | TPM_RIGHTALIGN, GET_X_LPARAM(wParam), GET_Y_LPARAM(wParam), 0, hwnd, NULL);
                 }
@@ -247,7 +244,7 @@ SDL_Tray *SDL_CreateTray(SDL_Surface *icon, const char *tooltip)
     SDL_free(tooltipw);
 
     if (icon) {
-        tray->nid.hIcon = CreateIconFromSurface(icon);
+        tray->nid.hIcon = WIN_CreateIconFromSurface(icon);
 
         if (!tray->nid.hIcon) {
             tray->nid.hIcon = load_default_icon();
@@ -280,7 +277,7 @@ void SDL_SetTrayIcon(SDL_Tray *tray, SDL_Surface *icon)
     }
 
     if (icon) {
-        tray->nid.hIcon = CreateIconFromSurface(icon);
+        tray->nid.hIcon = WIN_CreateIconFromSurface(icon);
 
         if (!tray->nid.hIcon) {
             tray->nid.hIcon = load_default_icon();

src/video/windows/SDL_surface_utils.c

@@ -1,97 +0,0 @@
-/*
-  Simple DirectMedia Layer
-  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
-
-  This software is provided 'as-is', without any express or implied
-  warranty.  In no event will the authors be held liable for any damages
-  arising from the use of this software.
-
-  Permission is granted to anyone to use this software for any purpose,
-  including commercial applications, and to alter it and redistribute it
-  freely, subject to the following restrictions:
-
-  1. The origin of this software must not be misrepresented; you must not
-     claim that you wrote the original software. If you use this software
-     in a product, an acknowledgment in the product documentation would be
-     appreciated but is not required.
-  2. Altered source versions must be plainly marked as such, and must not be
-     misrepresented as being the original software.
-  3. This notice may not be removed or altered from any source distribution.
-*/
-#include "SDL_internal.h"
-
-#include "SDL_surface_utils.h"
-
-#include "../SDL_surface_c.h"
-
-#if !(defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES))
-HICON CreateIconFromSurface(SDL_Surface *surface)
-{
-    SDL_Surface *s = SDL_ConvertSurface(surface, SDL_PIXELFORMAT_ARGB8888);
-    if (!s) {
-        return NULL;
-    }
-
-    /* The dimensions will be needed after s is freed */
-    const int width = s->w;
-    const int height = s->h;
-
-    BITMAPINFO bmpInfo;
-    SDL_zero(bmpInfo);
-    bmpInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
-    bmpInfo.bmiHeader.biWidth = width;
-    bmpInfo.bmiHeader.biHeight = -height; /* Top-down bitmap */
-    bmpInfo.bmiHeader.biPlanes = 1;
-    bmpInfo.bmiHeader.biBitCount = 32;
-    bmpInfo.bmiHeader.biCompression = BI_RGB;
-
-    HDC hdc = GetDC(NULL);
-    void *pBits = NULL;
-    HBITMAP hBitmap = CreateDIBSection(hdc, &bmpInfo, DIB_RGB_COLORS, &pBits, NULL, 0);
-    if (!hBitmap) {
-        ReleaseDC(NULL, hdc);
-        SDL_DestroySurface(s);
-        return NULL;
-    }
-
-    SDL_memcpy(pBits, s->pixels, width * height * 4);
-
-    SDL_DestroySurface(s);
-
-    HBITMAP hMask = CreateBitmap(width, height, 1, 1, NULL);
-    if (!hMask) {
-        DeleteObject(hBitmap);
-        ReleaseDC(NULL, hdc);
-        return NULL;
-    }
-
-    HDC hdcMem = CreateCompatibleDC(hdc);
-    HGDIOBJ oldBitmap = SelectObject(hdcMem, hMask);
-
-    for (int y = 0; y < height; y++) {
-        for (int x = 0; x < width; x++) {
-            BYTE* pixel = (BYTE*)pBits + (y * width + x) * 4;
-            BYTE alpha = pixel[3];
-            COLORREF maskColor = (alpha == 0) ? RGB(0, 0, 0) : RGB(255, 255, 255);
-            SetPixel(hdcMem, x, y, maskColor);
-        }
-    }
-
-    ICONINFO iconInfo;
-    iconInfo.fIcon = TRUE;
-    iconInfo.xHotspot = 0;
-    iconInfo.yHotspot = 0;
-    iconInfo.hbmMask = hMask;
-    iconInfo.hbmColor = hBitmap;
-
-    HICON hIcon = CreateIconIndirect(&iconInfo);
-
-    SelectObject(hdcMem, oldBitmap);
-    DeleteDC(hdcMem);
-    DeleteObject(hBitmap);
-    DeleteObject(hMask);
-    ReleaseDC(NULL, hdc);
-
-    return hIcon;
-}
-#endif

src/video/windows/SDL_surface_utils.h

@@ -1,38 +0,0 @@
-/*
-  Simple DirectMedia Layer
-  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
-
-  This software is provided 'as-is', without any express or implied
-  warranty.  In no event will the authors be held liable for any damages
-  arising from the use of this software.
-
-  Permission is granted to anyone to use this software for any purpose,
-  including commercial applications, and to alter it and redistribute it
-  freely, subject to the following restrictions:
-
-  1. The origin of this software must not be misrepresented; you must not
-     claim that you wrote the original software. If you use this software
-     in a product, an acknowledgment in the product documentation would be
-     appreciated but is not required.
-  2. Altered source versions must be plainly marked as such, and must not be
-     misrepresented as being the original software.
-  3. This notice may not be removed or altered from any source distribution.
-*/
-#include "SDL_internal.h"
-
-#ifndef SDL_surface_utils_h_
-#define SDL_surface_utils_h_
-
-#include "../../core/windows/SDL_windows.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-extern HICON CreateIconFromSurface(SDL_Surface *surface);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif

src/video/windows/SDL_windowswindow.c

@@ -43,44 +43,6 @@
 #include <shobjidl.h>
 #endif
 
-// Dark mode support
-typedef enum {
-    UXTHEME_APPMODE_DEFAULT,
-    UXTHEME_APPMODE_ALLOW_DARK,
-    UXTHEME_APPMODE_FORCE_DARK,
-    UXTHEME_APPMODE_FORCE_LIGHT,
-    UXTHEME_APPMODE_MAX
-} UxthemePreferredAppMode;
-
-typedef enum {
-    WCA_UNDEFINED = 0,
-    WCA_USEDARKMODECOLORS = 26,
-    WCA_LAST = 27
-} WINDOWCOMPOSITIONATTRIB;
-
-typedef struct {
-    WINDOWCOMPOSITIONATTRIB Attrib;
-    PVOID pvData;
-    SIZE_T cbData;
-} WINDOWCOMPOSITIONATTRIBDATA;
-
-typedef struct {
-    ULONG dwOSVersionInfoSize;
-    ULONG dwMajorVersion;
-    ULONG dwMinorVersion;
-    ULONG dwBuildNumber;
-    ULONG dwPlatformId;
-    WCHAR szCSDVersion[128];
-} NT_OSVERSIONINFOW;
-
-typedef bool (WINAPI *ShouldAppsUseDarkMode_t)(void);
-typedef void (WINAPI *AllowDarkModeForWindow_t)(HWND, bool);
-typedef void (WINAPI *AllowDarkModeForApp_t)(bool);
-typedef void (WINAPI *RefreshImmersiveColorPolicyState_t)(void);
-typedef UxthemePreferredAppMode (WINAPI *SetPreferredAppMode_t)(UxthemePreferredAppMode);
-typedef BOOL (WINAPI *SetWindowCompositionAttribute_t)(HWND, const WINDOWCOMPOSITIONATTRIBDATA *);
-typedef void (NTAPI *RtlGetVersion_t)(NT_OSVERSIONINFOW *);
-
 // Windows CE compatibility
 #ifndef SWP_NOCOPYBITS
 #define SWP_NOCOPYBITS 0
@@ -2298,74 +2260,6 @@ bool WIN_SetWindowFocusable(SDL_VideoDevice *_this, SDL_Window *window, bool foc
 }
 #endif // !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
 
-void WIN_UpdateDarkModeForHWND(HWND hwnd)
-{
-#if !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
-    HMODULE ntdll = LoadLibrary(TEXT("ntdll.dll"));
-    if (!ntdll) {
-        return;
-    }
-    // There is no function to get Windows build number, so let's get it here via RtlGetVersion
-    RtlGetVersion_t RtlGetVersionFunc = (RtlGetVersion_t)GetProcAddress(ntdll, "RtlGetVersion");
-    NT_OSVERSIONINFOW os_info;
-    os_info.dwOSVersionInfoSize = sizeof(NT_OSVERSIONINFOW);
-    os_info.dwBuildNumber = 0;
-    if (RtlGetVersionFunc) {
-        RtlGetVersionFunc(&os_info);
-    }
-    FreeLibrary(ntdll);
-    os_info.dwBuildNumber &= ~0xF0000000;
-    if (os_info.dwBuildNumber < 17763) {
-        // Too old to support dark mode
-        return;
-    }
-    HMODULE uxtheme = LoadLibrary(TEXT("uxtheme.dll"));
-    if (!uxtheme) {
-        return;
-    }
-    RefreshImmersiveColorPolicyState_t RefreshImmersiveColorPolicyStateFunc = (RefreshImmersiveColorPolicyState_t)GetProcAddress(uxtheme, MAKEINTRESOURCEA(104));
-    ShouldAppsUseDarkMode_t ShouldAppsUseDarkModeFunc = (ShouldAppsUseDarkMode_t)GetProcAddress(uxtheme, MAKEINTRESOURCEA(132));
-    AllowDarkModeForWindow_t AllowDarkModeForWindowFunc = (AllowDarkModeForWindow_t)GetProcAddress(uxtheme, MAKEINTRESOURCEA(133));
-    if (os_info.dwBuildNumber < 18362) {
-        AllowDarkModeForApp_t AllowDarkModeForAppFunc = (AllowDarkModeForApp_t)GetProcAddress(uxtheme, MAKEINTRESOURCEA(135));
-        if (AllowDarkModeForAppFunc) {
-            AllowDarkModeForAppFunc(true);
-        }
-    } else {
-        SetPreferredAppMode_t SetPreferredAppModeFunc = (SetPreferredAppMode_t)GetProcAddress(uxtheme, MAKEINTRESOURCEA(135));
-        if (SetPreferredAppModeFunc) {
-            SetPreferredAppModeFunc(UXTHEME_APPMODE_ALLOW_DARK);
-        }
-    }
-    if (RefreshImmersiveColorPolicyStateFunc) {
-        RefreshImmersiveColorPolicyStateFunc();
-    }
-    if (AllowDarkModeForWindowFunc) {
-        AllowDarkModeForWindowFunc(hwnd, true);
-    }
-    BOOL value;
-    // Check dark mode using ShouldAppsUseDarkMode, but use SDL_GetSystemTheme as a fallback
-    if (ShouldAppsUseDarkModeFunc) {
-        value = ShouldAppsUseDarkModeFunc() ? TRUE : FALSE;
-    } else {
-        value = (SDL_GetSystemTheme() == SDL_SYSTEM_THEME_DARK) ? TRUE : FALSE;
-    }
-    FreeLibrary(uxtheme);
-    if (os_info.dwBuildNumber < 18362) {
-        SetProp(hwnd, TEXT("UseImmersiveDarkModeColors"), SDL_reinterpret_cast(HANDLE, SDL_static_cast(INT_PTR, value)));
-    } else {
-        HMODULE user32 = GetModuleHandle(TEXT("user32.dll"));
-        if (user32) {
-            SetWindowCompositionAttribute_t SetWindowCompositionAttributeFunc = (SetWindowCompositionAttribute_t)GetProcAddress(user32, "SetWindowCompositionAttribute");
-            if (SetWindowCompositionAttributeFunc) {
-                WINDOWCOMPOSITIONATTRIBDATA data = { WCA_USEDARKMODECOLORS, &value, sizeof(value) };
-                SetWindowCompositionAttributeFunc(hwnd, &data);
-            }
-        }
-    }
-#endif
-}
-
 bool WIN_SetWindowParent(SDL_VideoDevice *_this, SDL_Window *window, SDL_Window *parent)
 {
 #if !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)

src/video/windows/SDL_windowswindow.h

@@ -136,7 +136,6 @@ extern bool WIN_SetWindowHitTest(SDL_Window *window, bool enabled);
 extern void WIN_AcceptDragAndDrop(SDL_Window *window, bool accept);
 extern bool WIN_FlashWindow(SDL_VideoDevice *_this, SDL_Window *window, SDL_FlashOperation operation);
 extern bool WIN_ApplyWindowProgress(SDL_VideoDevice *_this, SDL_Window *window);
-extern void WIN_UpdateDarkModeForHWND(HWND hwnd);
 extern bool WIN_SetWindowPositionInternal(SDL_Window *window, UINT flags, SDL_WindowRect rect_type);
 extern void WIN_ShowWindowSystemMenu(SDL_Window *window, int x, int y);
 extern bool WIN_SetWindowFocusable(SDL_VideoDevice *_this, SDL_Window *window, bool focusable);