public override void Dispose()
{
_target = null;
_source = null;
_activeRect = null;
base.Dispose();
}
internal BaseDropPanel(IDragTarget target, DragItem source)
{
_target = target;
_source = source;
//绘制停靠的区域
_activeRect = new ActiveRectDropVisual(DragManager.NONE);
AddChild(_activeRect);
}
public void HitTest(Point mouseP, ActiveRectDropVisual activeRect)
{
_mouseP = mouseP;
_activeRect = activeRect;
_activeRect.Flag = DragManager.NONE;
var p = this.PointToScreenDPIWithoutFlowDirection(new Point());
p = new Point(mouseP.X - p.X, mouseP.Y - p.Y);
VisualTreeHelper.HitTest(this, _HitFilter, _HitRessult, new PointHitTestParameters(p));
_activeRect = null;
}