public static bool ExtendGlassFrame(Window window, Thickness margin)
{
if (!DwmIsCompositionEnabled())
return false;
IntPtr hwnd = new WindowInteropHelper(window).Handle;
if (hwnd == IntPtr.Zero)
throw new InvalidOperationException(
"The Window must be shown before extending glass.");
// Устанавливаем прозрачный фон - как с точки зрения WPF, так и в Win32
window.Background = Brushes.Transparent;
HwndSource.FromHwnd(hwnd).CompositionTarget.BackgroundColor =
Colors.Transparent;
MARGINS margins = new MARGINS(margin);
DwmExtendFrameIntoClientArea(hwnd, ref margins);
return true;
}
static extern void DwmExtendFrameIntoClientArea(IntPtr hWnd, ref MARGINS pMarInset);
