深入浅出flex4应用（1）-入门

<?xml version="1.0" encoding="utf-8"?><s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"    xmlns:s="library://ns.adobe.com/flex/spark"    xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600"><fx:Declarations><!-- 将非可视元素（例如服务、值对象）放在此处 --></fx:Declarations><fx:Script><![CDATA[import mx.controls.Alert;public function clickHandler(clickEvent:Event):void{Alert.show("事件类型:"+clickEvent.type+"来自于:"+clickEvent.currentTarget.id);}]]></fx:Script><s:Button x="10" y="10" id="hi" label="您好，点我试试" click="clickHandler(event)" fontSize="50" /></s:Application>