flex 注册事件

< ?xml version="1.0" encoding="utf-8"?>
<mx :Application 
	xmlns:mx="http://www.adobe.com/2006/mxml" 
	viewSourceURL="src/HandlingEventsActionScript/index.html"
	horizontalAlign="center" verticalAlign="middle" 
	width="300" height="200"
	creationComplete="creationCompleteHandler(event);"

>
	</mx><mx :Script>
	< ![CDATA[
	import flash.events.MouseEvent;
	import mx.events.FlexEvent;

	private function creationCompleteHandler(event:FlexEvent):void

	{
	// Listen for the click event on the Button control
	myButton.addEventListener (MouseEvent.CLICK, clickHandler);
	}
	
	private function clickHandler ( event:Event ):void

	{
	myLabel.text = "Hello, World!";
	}
	]]>
	</mx>

	
	<mx :Panel 
	title="My Application" horizontalAlign="center"
	paddingTop="10" paddingBottom="10" paddingLeft="10" paddingRight="10"
	>

	<mx :Label id="myLabel" width="180" fontWeight="bold" fontSize="24"/>
	<mx :Button id="myButton" label="Click Me!" />

	</mx>