private static void SetWindowEffect(IntPtr window, AccentPolicy accent)
{
var accentStructSize = Marshal.SizeOf(accent);
var accentPtr = Marshal.AllocHGlobal(accentStructSize);
Marshal.StructureToPtr(accent, accentPtr, false);
var data = new WindowCompositionAttributeData
{
Attribute = WindowCompositionAttribute.WCA_ACCENT_POLICY,
SizeOfData = accentStructSize,
Data = accentPtr
};
PInvoke.SetWindowCompositionAttribute(window, ref data);
Marshal.FreeHGlobal(accentPtr);
}