public override void OnDragEnter(DragEventArgs e)
{
base.OnDragEnter(e);
this.LastHitTestResult = this.HitTestResult;
if (this.DropTarget != null)
{
this.HitTestResult = ListItemDragDropHandler.HitTest(this.DropTarget, e.GetPosition((IInputElement)this.DropTarget));
}
else
{
this.HitTestResult = DropHitTestResults.None;
}
}
public override void OnDragOver(DragEventArgs e)
{
base.OnDragOver(e);
this.LastHitTestResult = this.HitTestResult;
if (this.DropTarget != null)
{
this.HitTestResult = ListItemDragDropHandler.HitTest(this.DropTarget, e.GetPosition((IInputElement)this.DropTarget));
if (this.hoverHelper == null)
{
return;
}
this.hoverHelper.HandleMouseMove(Mouse.GetPosition((IInputElement)this.DropTarget), (this.HitTestResult & DropHitTestResults.CenterHalf) != DropHitTestResults.None);
}
else
{
this.HitTestResult = DropHitTestResults.None;
}
}