AS3 onReleaseOutside 事件模拟

 昨天听群里的朋友在讨论AS3 onReleaseOutside的问题,就写了一个.
听Sephiroth说,他也写过一个,改天问他拿来看看...(广告,Sephiroth是Flash 3D编程高手)^v^
回到正题,AS3里onReleaseOutside事件移除了,AS3帮助的对照表中,代替它的是MOUSE_UP.
但单单用MOUSE_UP去侦听是不行的~要配合MOUSE_DOWN使用才行.
以下是我写的ExtMouseEvent类:
package cn.snowkit.events
{
 import flash.events.MouseEvent;
 public class ExtMouseEvent
 {
  private var btn:*;
  private var _down:Boolean;
  private var fun:Function;
  public static const RELEASE_OUTSIDE:String = "releaseOutside";
  public function ExtMouseEvent()
  {
   _down = false;
  }
  private function downFun(evt:MouseEvent):void
  {
   _down = true;
  }
  private function upFun(evt:MouseEvent):void
  {
   if(_down)
   {
    if(evt.target != btn)
    {
     fun(evt);
    }
   }
   _down = false;
  }
  public function addEventListener(e:String,f:Function,target:*,s:*):void
  {
   if(e == RELEASE_OUTSIDE)
   {
    btn = target;
    fun = f;
    target.addEventListener(MouseEvent.MOUSE_DOWN,downFun); 
    s.addEventListener(MouseEvent.MOUSE_UP,upFun);
   }
  }
 }
}
使用方法:
var event:ExtMouseEvent = new ExtMouseEvent();
event.addEventListener(ExtMouseEvent.RELEASE_OUTSIDE,handel_function,button_Instance,stage);
封装得不好,见笑了,大家有更好的方法,希望能指教一下~
本文转自：http://www.5uflash.com/flashjiaocheng/Flash-as3-jiaocheng/1910.html