ÄÄλ¸ßÊÖ°ïæ¿´Ò»ÏÂÕâ¶ÎFlex´úÂë´íÔÚÄÄÀï

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" fontSize="12">
<mx:Script>
<![CDATA[
public var selectedNode:XML;
//µ±µãÑ¡ÁËtree×é¼þÖеIJ»Í¬½Úµãʱ
public function treeChanged(event:Event):void{
//event.target´ú±ítree×é¼þ,¶øtree×é¼þµÄselectedItem´ú±íÁ˵±Ç°Ñ¡ÖнڵãµÄXMLÊý¾Ý
selectedNode=Tree(event.target).selectedItem as XML;
//Êä³öÑ¡ÖнڵãµÄlabelÊôÐÔÖµ
res_txt.text=""+selectedNode.@label

}
]]>
</mx:Script>
<mx:XMLList id="files">
<folder label="C:">
<folder label="My Document">
<folder label="Adobe"/>
</folder>
<folder label="Windows">
<folder label="soft"/>
<folder label="workSpaces"/>
</folder>
<folder label="Drivers"/>
<folder label="linux driver"/>
</folder>
</mx:XMLList>
        //ÌáʾÎÒÕâÐÐÓдí
<mx:Tree id="myTree" width="119" height="265" labelField="@label" showRoot="true" dataDescript