Flex弹出层

<?xml version="1.0"?>
<mx:Application xmlns:mx=" http://www.adobe.com/2006/mxml"> ??? <mx:Script> ??? import mx.events.CloseEvent; ??? import mx.containers.TitleWindow; ??? import mx.containers.Panel; ??? import mx.managers.PopUpManager; ??? import mx.controls.TextArea; ??? import mx.core.IFlexDisplayObject; ?import mx.controls.Alert; ??? ??? public function openWindow(event:MouseEvent):void { ??????? var myPopUp:TextArea;myPopUp = new TextArea(); ??????? myPopUp.width= 220; ??????? myPopUp.height= 150; ??????? myPopUp.setStyle("fontSize",12); ??????? myPopUp.setStyle("backgroundAlpha",0.5); ??????? var panel:TitleWindow=new TitleWindow(); ??????? panel.showCloseButton=true; ??????? panel.addEventListener(CloseEvent.CLOSE,closeWin); ??????? panel.title="Comments"; ??????? panel.setStyle("backgroundAlpha",0); ??????? panel.setStyle("fontSize",12); ??????? panel.addChild(myPopUp); ??????? PopUpManager.addPopUp(panel,this,true); ??????? PopUpManager.centerPopUp(panel); ??? } ??? private function closeWin(event:CloseEvent):void{ ??? ?PopUpManager.removePopUp(IFlexDisplayObject(event.currentTarget)); ??? } ??? ??? </mx:Script> ??? <mx:VBox> ??????? <mx:Button id="b1" label="Create TextArea Popup" click="openWindow(event);"/> ??? </mx:VBox> </mx:Application>