Implemented immersive dark title bar

UnleashedRecomp/ui/window.cpp

@@ -162,6 +162,10 @@ void Window::Init()
     SDL_GetWindowWMInfo(s_pWindow, &info);
 
     s_handle = info.info.win.window;
+
+    SetDarkTitleBar(true);
+
+    SDL_ShowWindow(s_pWindow);
 }
 
 void Window::Update()

UnleashedRecomp/ui/window.h

@@ -5,6 +5,12 @@
 #include <ui/window_events.h>
 #include <cfg/config.h>
 
+#if _WIN32
+#include <dwmapi.h>
+#include <kernel/platform.h>
+#pragma comment(lib, "dwmapi.lib")
+#endif
+
 #define DEFAULT_WIDTH 1280
 #define DEFAULT_HEIGHT 720
 
@@ -70,6 +76,23 @@ public:
         SDL_SetWindowTitle(s_pWindow, title);
     }
 
+    static void SetDarkTitleBar(bool isEnabled)
+    {
+#if _WIN32
+        auto version = GetPlatformVersion();
+
+        if (version.Major < 10 || version.Build <= 17763)
+            return;
+
+        auto flag = version.Build >= 18985
+            ? DWMWA_USE_IMMERSIVE_DARK_MODE
+            : 19; // DWMWA_USE_IMMERSIVE_DARK_MODE_BEFORE_20H1
+
+        const DWORD useImmersiveDarkMode = isEnabled;
+        DwmSetWindowAttribute(s_handle, flag, &useImmersiveDarkMode, sizeof(useImmersiveDarkMode));
+#endif
+    }
+
     static bool IsFullscreen()
     {
         return SDL_GetWindowFlags(s_pWindow) & SDL_WINDOW_FULLSCREEN_DESKTOP;
@@ -139,7 +162,7 @@ public:
 
     static uint32_t GetWindowFlags()
     {
-        uint32_t flags = SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE;
+        uint32_t flags = SDL_WINDOW_HIDDEN | SDL_WINDOW_RESIZABLE;
 
         if (Config::WindowState == EWindowState::Maximised)
             flags |= SDL_WINDOW_MAXIMIZED;