private void UpdateThumbnail()
{
DwmThumbnailProperties props = new DwmThumbnailProperties();
props.Flags = DwmThumbnailFlags.RectDestination | DwmThumbnailFlags.Opacity | DwmThumbnailFlags.Visible | DwmThumbnailFlags.SourceClientAreaOnly;
props.SourceClientAreaOnly = this.ClientAreaOnly;
props.Opacity = (byte)(this.Opacity * (double)byte.MaxValue);
props.Visible = this.IsVisible;
System.Windows.Point point1 = this.Destination.TranslatePoint(new System.Windows.Point(0.0, 0.0), (UIElement)this.window);
System.Windows.Point point2 = this.Destination.TranslatePoint(new System.Windows.Point(this.Destination.ActualWidth, this.Destination.ActualHeight), (UIElement)this.window);
props.rcDestination = new Advent.Common.Interop.RECT((int)point1.X, (int)point1.Y, (int)point2.X, (int)point2.Y);
Marshal.ThrowExceptionForHR(Advent.Common.Interop.NativeMethods.DwmUpdateThumbnailProperties(this.thumbnailHandle, ref props));
}
public static extern int DwmUpdateThumbnailProperties(IntPtr HThumbnail, ref DwmThumbnailProperties props);
public static extern int DwmUpdateThumbnailProperties(IntPtr HThumbnail, ref DwmThumbnailProperties props);