/// <summary>
/// Extends the glass frame.
/// </summary>
/// <param name="window">The window.</param>
/// <param name="margin">The margin.</param>
/// <returns></returns>
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.");
}
// Set the background to transparent from both the WPF and Win32 perspectives
SolidColorBrush background = new SolidColorBrush(Colors.Red);
background.Opacity = 0.5;
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 margins);
/* Verbreitert den Rahmen des Fensters entsprechend
den Einstellungen in Padding */
private void ExtendFrame()
{
if(this.IsGlassFrameEnabled) {
if(this.DesignMode == false) {
// Wenn nicht im Design-Modus: den Rahmen verbreitern
MARGINS margins = new MARGINS() {
Left = this.Padding.Left,
Top = this.Padding.Top,
Right = this.Padding.Right,
Bottom = this.Padding.Bottom
};
DwmExtendFrameIntoClientArea(this.Handle, ref margins);
}
}
}
public static extern int DwmExtendFrameIntoClientArea(
IntPtr hWnd,
ref MARGINS pMarInset
);
