BASE changed interface

Native/Win32Interop.cs

@@ -0,0 +1,20 @@
+using System.Runtime.InteropServices;
+
+namespace FoxBrowser.Native;
+
+internal static class Win32Interop
+{
+    private const int DwmwaUseImmersiveDarkMode = 20;
+    private const int DwmwaUseImmersiveDarkModeLegacy = 19;
+
+    [DllImport("dwmapi.dll", PreserveSig = true)]
+    private static extern int DwmSetWindowAttribute(nint hwnd, int attribute, ref int value, int size);
+
+    public static void ApplyDarkTitleBar(nint hwnd, bool enabled)
+    {
+        if (hwnd == 0) return;
+        var value = enabled ? 1 : 0;
+        var result = DwmSetWindowAttribute(hwnd, DwmwaUseImmersiveDarkMode, ref value, sizeof(int));
+        if (result != 0) DwmSetWindowAttribute(hwnd, DwmwaUseImmersiveDarkModeLegacy, ref value, sizeof(int));
+    }
+}