Function EnableDarkMode

UnityEditorDarkMode.cpp:221–251

https://stackoverflow.com/questions/39261826/change-the-color-of-the-title-bar-caption-of-a-win32-application https://gist.github.com/rounk-ctrl/b04e5622e30e0d62956870d5c22b7017 https://github.com/microsoft/WindowsAppSDK/issues/41 https://gist.github.com/ericoporto/1745f4b912e22f9eabfce2c7166d979b

// https://github.com/microsoft/WindowsAppSDK/issues/41
// https://gist.github.com/ericoporto/1745f4b912e22f9eabfce2c7166d979b
void EnableDarkMode(HWND hWnd) {

    // apply dark mode to the window
    {
        const BOOL USE_DARK_MODE = true;

        DwmSetWindowAttribute(hWnd,
            DWMWA_USE_IMMERSIVE_DARK_MODE,
            &USE_DARK_MODE,
            sizeof(USE_DARK_MODE));
    }

    // apply dark mode to the context menus
    {
        using fnSetPreferredAppMode = PreferredAppMode(WINAPI*)(PreferredAppMode appMode);
        fnSetPreferredAppMode SetPreferredAppMode;

        static HMODULE hUxtheme = nullptr;

        if (!hUxtheme) {
            hUxtheme = LoadLibraryExW(L"uxtheme.dll", nullptr, LOAD_LIBRARY_SEARCH_SYSTEM32);
        }

        if (hUxtheme) {
            // #135 is the ordinal for SetPreferredAppMode private API
            // which is available in uxtheme.dll since Windows 10 1903+
            SetPreferredAppMode = (fnSetPreferredAppMode)GetProcAddress(hUxtheme, MAKEINTRESOURCEA(135));
            SetPreferredAppMode(PreferredAppMode::ForceDark);
		}
    }
}

LRESULT CALLBACK CallWndSubClassProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR uIdSubclass, DWORD_PTR dwRefData);