AIR程序如何最小化到系统托盘(3)

public function undock(evt:Event):void { 
          stage.nativeWindow.visible = true;//设置本地程序窗体可见 
             stage.nativeWindow.orderToFront();//设置本地程序窗体到最前端 
          NativeApplication.nativeApplication .icon.bitmaps = [];
            } 
   private function dock():void{//最小化到系统托盘
    stage.nativeWindow.visible = false; //设置本地程序窗体不可见 
               NativeApplication.nativeApplication.icon.bitmaps = [dockImage];//设置托盘的图标 
   }