Flex CodeBehind模式

action script:

package oreilly.cookbook
{
 import mx.core.Application;
    import mx.containers.Canvas;
    import flash.events.Event;

    public class CodeBehindComponent extends Canvas
    {
        public function CodeBehindComponent()
        {
            super();
            addEventListener(Event.ADDED_TO_STAGE, addedToStageListener);
        }

        protected function addedToStageListener(event:Event):void
        {
            trace(" Added to Stage from Code Behind ");
        }

        protected function clickHandler(event:Event):void
        {
            trace(" Click handled from component "+event.target);
        }
    }
}

component:

<?xml version="1.0" encoding="utf-8"?>
<cookbook:CodeBehindComponent xmlns:cookbook="oreilly.cookbook.*" xmlns:mx="http://www.adobe.com/2006/mxml" width="400" height="300">
  <mx:Button label="Button" x="10" y="10" click="clickHandler(event);"/>
</cookbook:CodeBehindComponent>

application:

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" xmlns:cookbook="oreilly.cookbook.*" xmlns:ns1="*">
 <ns1:CodeBehindComponent x="10" y="10">
 </ns1:CodeBehindComponent>
</mx:Application>