as3自定义事件

 package EventPackage
 {
     import flash.events.Event;

     /**
      *
      * @author tqr <br />
      * 创建时间：2015-2-6 下午5:55:49
      */
     public class MyEvent extends Event
     {
         private var _data:*;

         public function get data():*{
             return _data;
         }

         public function MyEvent(type:String, $data:*, bubbles:Boolean=false, cancelable:Boolean=false)
         {
             super(type, bubbles, cancelable);
             this._data = $data;
         }

         public override function clone():Event{
             return new MyEvent(this.type, this._data, this.bubbles, this.cancelable);
         }
     }
 }