List 拖动数据 for Flex

在Flex中List的数据拖动只需要设置以下几个属性就行了．
dragEnabled="true"　dragMoveEnabled="true"　dropEnabled="true"
例：

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init()">
    <mx:Script>   
          <![CDATA[
              import mx.controls.listClasses.ListItemRenderer;
            import mx.collections.ArrayCollection; 
            import comm.*;  
            import mx.controls.Alert;
            import mx.events.SliderEvent;
            
            [Bindable]   
            private var carArray : ArrayCollection = new ArrayCollection(); 
              
            private var db:XML= 
                <object>        
                    <car>
                        <Name>wubiyu</Name>
                        <Available>true</Available>
                    </car>
                    <car>
                        <Name>wubiyu1</Name>
                        <Available>true</Available>
                    </car>
                    <car>
                        <Name>wubiyu2</Name>
                        <Available>true</Available>
                    </car>
                    <car>
                        <Name>wubiyu3</Name>
                        <Available>true</Available>
                    </car>
                </object>
               
            private function init():void 
>