<?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:Script>
  <![CDATA[
import mx.controls.Alert;
public function clickhandler(clickevent:Event):void
{
  Alert.show(clickevent.type+":"+clickevent.currentTarget.id);
}
]]>
</fx:Script>
<s:Button  id="hello" label="hello,world" click="clickhandler(event)" />
<fx:Declarations>
<!-- 将非可视元素（例如服务、值对象）放在此处 -->
</fx:Declarations>

</s:Application>