private Standard.HRESULT _UpdateThumbnailClipping(bool attached)
{
Standard.RefRECT prcClip = null;
if (attached && (this.ThumbnailClipMargin != _EmptyThickness))
{
Thickness thumbnailClipMargin = this.ThumbnailClipMargin;
Standard.RECT clientRect = Standard.NativeMethods.GetClientRect(this._hwndSource.Handle);
Rect rect2 = Standard.DpiHelper.DeviceRectToLogical(new Rect((double)clientRect.Left, (double)clientRect.Top, (double)clientRect.Width, (double)clientRect.Height));
if (((thumbnailClipMargin.Left + thumbnailClipMargin.Right) >= rect2.Width) || ((thumbnailClipMargin.Top + thumbnailClipMargin.Bottom) >= rect2.Height))
{
prcClip = new Standard.RefRECT(0, 0, 0, 0);
}
else
{
Rect logicalRectangle = new Rect(thumbnailClipMargin.Left, thumbnailClipMargin.Top, (rect2.Width - thumbnailClipMargin.Left) - thumbnailClipMargin.Right, (rect2.Height - thumbnailClipMargin.Top) - thumbnailClipMargin.Bottom);
Rect rect4 = Standard.DpiHelper.LogicalRectToDevice(logicalRectangle);
prcClip = new Standard.RefRECT((int)rect4.Left, (int)rect4.Top, (int)rect4.Right, (int)rect4.Bottom);
}
}
return(this._taskbarList.SetThumbnailClip(this._hwndSource.Handle, prcClip));
}
private HRESULT _UpdateThumbnailClipping(bool attached)
{
Assert.IsNotNull(_window);
RefRECT interopRc = null;
if (attached && ThumbnailClipMargin != _EmptyThickness)
{
Thickness margin = ThumbnailClipMargin;
// Use the native GetClientRect. Window.ActualWidth and .ActualHeight include the non-client areas.
RECT physicalClientRc = NativeMethods.GetClientRect(_hwndSource.Handle);
Rect logicalClientRc = DpiHelper.DeviceRectToLogical(new Rect(physicalClientRc.Left, physicalClientRc.Top, physicalClientRc.Width, physicalClientRc.Height));
// Crop the clipping to ensure that the margin doesn't overlap itself.
if (margin.Left + margin.Right >= logicalClientRc.Width
|| margin.Top + margin.Bottom >= logicalClientRc.Height)
{
interopRc = new RefRECT(0, 0, 0, 0);
}
else
{
Rect logicalClip = new Rect(margin.Left, margin.Top, logicalClientRc.Width - margin.Left - margin.Right, logicalClientRc.Height - margin.Top - margin.Bottom);
Rect physicalClip = DpiHelper.LogicalRectToDevice(logicalClip);
interopRc = new RefRECT((int)physicalClip.Left, (int)physicalClip.Top, (int)physicalClip.Right, (int)physicalClip.Bottom);
}
}
// This will fail in the interop layer if called too early.
HRESULT hr = _taskbarList.SetThumbnailClip(_hwndSource.Handle, interopRc);
Assert.IsTrue(hr.Succeeded);
return hr;
}