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Workaround to fix light title bar in Windows #280

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Workaround to fix light title bar in Windows #280

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bd8b525
Workaround for light title bar in Windows
pranair May 17, 2021
03ae320
Workaround for getting dark title bar in Windows
pranair May 17, 2021
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64 changes: 64 additions & 0 deletions src/main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,67 @@

#ifdef _WIN32
#include <windows.h>
#include <dwmapi.h>
#include <SDL2/SDL_syswm.h>

enum WINDOWCOMPOSITIONATTRIB {
WCA_USEDARKMODECOLORS = 26
};

struct WINDOWCOMPOSITIONATTRIBDATA {
enum WINDOWCOMPOSITIONATTRIB Attrib;
PVOID pvData;
SIZE_T cbData;
};

enum PreferredAppMode { Default, AllowDark, ForceDark, ForceLight, Max };

typedef BOOL(WINAPI *fnSetWindowCompositionAttribute)(
HWND hWnd, struct WINDOWCOMPOSITIONATTRIBDATA *);
typedef VOID(WINAPI *fnRefreshImmersiveColorPolicyState)(); // ordinal 104
typedef BOOL(WINAPI *fnShouldAppsUseDarkMode)(); // ordinal 132
typedef enum PreferredAppMode(WINAPI *fnSetPreferredAppMode)(
enum PreferredAppMode appMode); // ordinal 135

fnRefreshImmersiveColorPolicyState _RefreshImmersiveColorPolicyState = NULL;
fnSetWindowCompositionAttribute _SetWindowCompositionAttribute = NULL;
fnShouldAppsUseDarkMode _ShouldAppsUseDarkMode = NULL;
fnSetPreferredAppMode _SetPreferredAppMode = NULL;

HWND getWinHandle(SDL_Window *win) {
SDL_SysWMinfo infoWindow;
SDL_VERSION(&infoWindow.version);
SDL_GetWindowWMInfo(win, &infoWindow);
return (infoWindow.info.win.window);
}

void get_dark_titlebar(SDL_Window *window, int dark) {
HWND hwnd;
hwnd = getWinHandle(window);
HMODULE hUxtheme =
LoadLibraryExW(L"uxtheme.dll", NULL, LOAD_LIBRARY_SEARCH_SYSTEM32);
if (hUxtheme) {
_SetWindowCompositionAttribute =
(fnSetWindowCompositionAttribute)(GetProcAddress(
GetModuleHandleW(L"user32.dll"), "SetWindowCompositionAttribute"));
_RefreshImmersiveColorPolicyState = (fnRefreshImmersiveColorPolicyState)(
GetProcAddress(hUxtheme, MAKEINTRESOURCEA(104)));
_ShouldAppsUseDarkMode = (fnShouldAppsUseDarkMode)(
GetProcAddress(hUxtheme, MAKEINTRESOURCEA(132)));
_SetPreferredAppMode = (fnSetPreferredAppMode)(
GetProcAddress(hUxtheme, MAKEINTRESOURCEA(135)));

if (_RefreshImmersiveColorPolicyState && _ShouldAppsUseDarkMode &&
_SetPreferredAppMode) {
_SetPreferredAppMode(AllowDark);
_RefreshImmersiveColorPolicyState();
LONG ldark = dark;
struct WINDOWCOMPOSITIONATTRIBDATA data = {WCA_USEDARKMODECOLORS, &ldark,
sizeof ldark};
_SetWindowCompositionAttribute(hwnd, &data);
}
}
}
#elif __linux__
#include <unistd.h>
#elif __APPLE__
Expand Down Expand Up @@ -86,6 +147,9 @@ int main(int argc, char **argv) {
window = SDL_CreateWindow(
"", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, dm.w * 0.8, dm.h * 0.8,
SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI | SDL_WINDOW_HIDDEN);
#if _WIN32
get_dark_titlebar(window, 1);
#endif
init_window_icon();
ren_init(window);

Expand Down