private function getUiAbsolutePosition(ui:UIComponent):Point//获取组件的绝对位置
{
var point:Point=new Point();
point.x=ui.x;
point.y=ui.y;
var temp:DisplayObject=ui;
do
{
var parent:UIComponent=temp.parent;
if(parent!=null)
{
point.x+=parent.x;
point.y+=parent.y;
temp=parent;
}
}while(parent!==this.parentApplication && parent!=null )
return point;
}