Set dark color mode for OS-provided context menus

Author: Aemony

LICENSE-3RD-PARTY

@@ -13,6 +13,7 @@ This software is based on the following MIT licensed projects:
 - pugixml                          : Copyright (c) 2006-2023 Arseny Kapoulkine
 - ValveFileVDF                     : Copyright (c) Matthias Moeller 2016 m_moeller@live.de
 - HybridDetect                     : Copyright (c) 2017 Intel
+- win32-darkmode                   : Copyright (c) 2019 Richard Yu
 
 ---
 

README.md

@@ -78,5 +78,6 @@ New versions will probably be distributed through their own packaged installer o
 * Uses [HybridDetect](https://github.com/GameTechDev/HybridDetect/), licensed under [MIT](https://github.com/GameTechDev/HybridDetect/blob/main/LICENSE.md).
 * Uses [zlib](https://github.com/madler/zlib), licensed under [the zlib license](https://raw.githubusercontent.com/madler/zlib/develop/LICENSE).
 * Uses [OpenEXR](https://github.com/AcademySoftwareFoundation/openexr), licensed under [BSD](https://raw.githubusercontent.com/AcademySoftwareFoundation/openexr/main/LICENSE.md).
+* Uses code from [win32-darkmode](https://github.com/ysc3839/win32-darkmode/), licensed under [MIT](https://github.com/ysc3839/win32-darkmode/blob/master/LICENSE).
 * Optionally uses [libjxl](https://github.com/libjxl/), licensed under [BSD](https://raw.githubusercontent.com/libjxl/libjxl/main/LICENSE).
 * Includes various snippets of code from [Stack Overflow](https://stackoverflow.com/), licensed under [Creative Commons Attribution-ShareAlike](https://stackoverflow.com/help/licensing).

include/utility/utility.h

@@ -179,6 +179,15 @@ typedef struct _SKIF_MEMORY_PRIORITY_INFORMATION {
   ULONG MemoryPriority;
 } SKIF_MEMORY_PRIORITY_INFORMATION, *SKIF_PMEMORY_PRIORITY_INFORMATION;
 
+enum class AppColorMode // PreferredAppMode
+{
+  Default,
+  AllowDark,
+  ForceDark,
+  ForceLight,
+  Max
+};
+
 HANDLE          SKIF_Util_GetCurrentProcess           (void);
 HANDLE          SKIF_Util_GetCurrentProcessToken      (void);
 BOOL            SKIF_Util_TerminateProcess            (DWORD  dwProcessId, UINT uExitCode);
@@ -232,6 +241,7 @@ std::wstring    SKIF_Util_FileExplorer_BrowseForFolderXP(PCWSTR defaultPath);
 std::wstring    SKIF_Util_FileExplorer_BrowseForFolder(PCWSTR defaultPath);
 bool            SKIF_Util_Files_PruneOlderThan        (std::wstring path, ULONGLONG secondsSince);
 bool            SKIF_Util_Files_PruneToLatestN        (std::wstring path, size_t filesToRetain);
+AppColorMode    SKIF_Util_SetAppColorMode             (AppColorMode mode);
 std::string     SKIF_Util_GetWindowMessageAsStr       (UINT msg);
 
 

src/SKIV.cpp

@@ -1284,6 +1284,8 @@ wWinMain ( _In_     HINSTANCE hInstance,
     return 0;
   }
 
+  SKIF_Util_SetAppColorMode (AppColorMode::AllowDark);
+
   SKIF_Notify_hWnd      =
     CreateWindowExW (                                                  WS_EX_NOACTIVATE,
       wcNotify.lpszClassName, _T("Special K Image Notification Icon"), WS_ICONIC,

src/utility/utility.cpp

@@ -2976,6 +2976,27 @@ SKIF_Util_Files_PruneToLatestN (std::wstring path, size_t filesToRetain)
   return false;
 }
 
+// Sets a new app color mode and returns the previous one
+AppColorMode
+SKIF_Util_SetAppColorMode (AppColorMode mode)
+{
+  if (! SKIF_Util_IsWindows11orGreater ( ))
+    return AppColorMode::Default;
+
+  using SetAppColorMode_pfn =
+           AppColorMode (WINAPI *)(AppColorMode);
+
+  static SetAppColorMode_pfn
+         SetAppColorMode =
+        (SetAppColorMode_pfn)GetProcAddress (LoadLibraryEx (L"uxtheme.dll", nullptr, LOAD_LIBRARY_SEARCH_SYSTEM32),
+        MAKEINTRESOURCEA (135)); // Ordinal 135
+
+  if (SetAppColorMode == nullptr)
+    return AppColorMode::Default;
+
+  return SetAppColorMode (mode);
+}
+
 
 #if NTDDI_VERSION < NTDDI_WIN10_RS5
 // Effective Power Mode (Windows 10 1809+)