public void ShowPreview(int previewHandle, string rootVisualPropertyName)
{
V preview = this.CreateWindow(System.Windows.Forms.Screen.PrimaryScreen, true);
IntPtr previewPointer = new IntPtr(previewHandle);
Interop.Rectangle clientRectange = new Interop.Rectangle();
bool result = Interop.Win32Api.GetClientRect(previewPointer, ref clientRectange);
HwndSourceParameters sourceParams = new HwndSourceParameters("sourceParams");
sourceParams.PositionX = 0;
sourceParams.PositionY = 0;
sourceParams.Height = clientRectange.Bottom - clientRectange.Top;
sourceParams.Width = clientRectange.Right - clientRectange.Left;
sourceParams.ParentWindow = previewPointer;
sourceParams.WindowStyle = (int)(Interop.WindowStyles.WindowStyleVisible | Interop.WindowStyles.WindowStyleChild | Interop.WindowStyles.WindowStyleClipChildren);
try
{
// at this point a window with the specified handle may no longer exist, so we wrap this in a try-catch
this.hostWindow = new HwndSource(sourceParams);
}
catch (Exception)
{
return;
}
this.hostWindow.Disposed += OnHostWindowDisposed;
this.hostWindow.RootVisual = (Visual)preview.FindName(rootVisualPropertyName);
}
public static extern bool GetClientRect(IntPtr hWnd, ref Rectangle lpRect);