protected override void OnRender(DrawingContext drawingContext)
{
base.OnRender(drawingContext);
if (mDraggedElement != null)
{
Win32Drag.POINT screenPos = new Win32Drag.POINT();
if (Win32Drag.GetCursorPos(ref screenPos))
{
tempCursorPoint = screenPos;
Point pos = PointFromScreen(new Point(screenPos.X, screenPos.Y));
Rect rect = new Rect(pos.X, pos.Y, mDraggedElement.ActualWidth, mDraggedElement.ActualHeight);
drawingContext.PushOpacity(0.5);
Brush highlight = mDraggedElement.TryFindResource(SystemColors.ControlDarkColorKey) as Brush;
if (highlight != null)
{
drawingContext.DrawRectangle(highlight, new Pen(Brushes.Transparent, 0), rect);
}
drawingContext.DrawRectangle(new VisualBrush(mDraggedElement),
new Pen(Brushes.Transparent, 0), rect);
drawingContext.Pop();
}
}
}
public DragDropAdorner(UIElement parent)
: base(parent)
{
IsHitTestVisible = false; // Seems Adorner is hit test visible?
mDraggedElement = parent as FrameworkElement;
Win32Drag.GetCursorPos(ref tempCursorPoint);
}
