private static void RemovePreviewAdorner()
{
if (_overlayElt != null)
{
AdornerLayer.GetAdornerLayer(CurrentDropTargetAdvisor.GetTopContainer()).Remove(_overlayElt);
_overlayElt = null;
}
}
/* ____________________________________________________________________
* Utility functions
* ____________________________________________________________________
*/
private static void CreatePreviewAdorner(UIElement adornedElt, IDataObject data)
{
if (_overlayElt != null)
{
return;
}
AdornerLayer layer = AdornerLayer.GetAdornerLayer(CurrentDropTargetAdvisor.GetTopContainer());
UIElement feedbackUI = CurrentDropTargetAdvisor.GetVisualFeedback(data);
_overlayElt = new DropPreviewAdorner(feedbackUI, adornedElt);
PositionAdorner();
layer.Add(_overlayElt);
}
