Flex自定义事件时为什么要重载clone()方法（转载）
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声明：转载
以前在private function relay(customEvent:CustomEvent):void{dispatchEvent(customEvent);}
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这个relay方法就是对CustomEvent的第一次响应，然后在这个方法里继续向外派发这个事件，由另一个事件处理器来继续处理；在重新派发事件的过程中，flash内部的事件<?xml version="1.0" encoding="utf-8"?><mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical"xmlns:MyComp="mycomponents.*" creationComplete="initApp()"><mx:Script><![CDATA[import myevents.EnableChangeEvent;import mx.controls.Alert;private function initApp():void{this.addEventListener(EnableChangeEvent.ENABLE_CHANGED,relistenEvent);}private function enableChangedListener(event:EnableChangeEvent):void{// Handle event.myTA.text = "Event isEnabled: "+event.isEnabled;dispatchEvent(event);}private function relistenEvent(event:EnableChangeEvent):void{Alert.show("isEnabled? "+event.isEnabled,"EventHandled");}]]></mx:Script><MyComp:MyButton label="ClickMe" enableChanged="enableChangedListener(event)"/><mx:TextArea id="myTA"/</mx:Application>
<?xml version="1.0" encoding="utf-8"?><mx:Button xmlns:mx="http://www.adobe.com/2006/mxml"click="buttonClickHandler()"><mx:Script><![CDATA[import myevents.EnableChangeEvent;public function buttonClickHandler():void{dispatchEvent(new EnableChangeEvent('enableChanged',true));}]]></mx:Script><mx:Metadata>Event(name="enableChanged", type="myevents.EnableChangeEvent")]</mx:Metadata></mx:Button>?
package myevents{import flash.eventsEvent;public class EnableChangeEvent extends Event{public static const ENABLE_CHANGED:String="enableChanged";public var isEnabled:Boolean;public function EnableChangeEvent(type:String, isEnabled:Boolean=false){super(type);this.isEnabled=isEnabled;}//override public function clone():Event//{//return new EnableChangeEvent(type, isEnabled);//}}}??
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