精灵事件简单例子

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 1 package 
 2 {
 3     import flash.events.MouseEvent;
 4     import flash.display.Sprite;
 5 
 6     public class EventDemo extends Sprite
 7     {
 8         private var eventSprite:Sprite;
 9         public function EventDemo ()
         {
             Init ();
         }
         private function Init ():void
         {
             eventSprite=new Sprite ();
             addChild(eventSprite);
             
             eventSprite.graphics.beginFill(0xff0000);
             eventSprite.graphics.drawCircle(0,0,50);
             eventSprite.graphics.endFill();
             
             eventSprite.x=stage.stageWidth/2;
             eventSprite.y=stage.stageHeight/2;
             
             eventSprite.addEventListener(MouseEvent.MOUSE_DOWN,MouseDown);
             eventSprite.addEventListener(MouseEvent.MOUSE_UP,MouseUp);
         }
         private function MouseDown(e:MouseEvent):void
         {
             trace( "Mouse Down!" );
         }
         private function MouseUp(e:MouseEvent):void
         {
             trace( "Mouse Up!" );
         }
     }
 }