flash监听机制（one by one）

package
{
 import flash.display.MovieClip;
 import flash.display.Sprite;
 import flash.events.Event;
 
 public class Test extends Sprite
 {
  public var _circle:MovieClip;
  public function Test ():void
  {
   
   this._circle = new CircleMc();
   //this._circle.addEventListener(Event.COMPLETE, onComplete);
   this._circle.addEventListener(Event.ENTER_FRAME, this.onComplete);
   addChild(this._circle);
   this._circle.play();
   /*_circle.onEnterFrame = function () {
    trace (this._currentframe);
   }
   
   this._circle.x = 100;
   this._circle.y = 100;
   
   */
  }
  
  public function onComplete(evt:Event):void
  {
   trace(evt.currentTarget.currentFrame);
   var mc:MovieClip = evt.currentTarget as MovieClip;
   if (mc.currentFrame != mc.totalFrames)
    return;
   this._circle.gotoAndStop(1);
   this._circle.removeEventListener(Event.ENTER_FRAME, this.onComplete);
   trace("complete!!!");
   return;
  }
 } 
}