flex组件使用【MenuBar】

<?xml?version="1.0"?encoding="utf-8"?>
<mx:Application?xmlns:mx="http://www.adobe.com/2006/mxml"?layout="absolute"?creationComplete="initCollrction();">
?<mx:Panel?x="73"?y="10"?width="503"?height="293"?layout="absolute">???????????????<!--@label表示节点中的label值-->
??<mx:MenuBar?itemClick="menuevent(event)"?x="0"?y="0"?width="483"?height="36"?dataProvider="{xmllistcollection}"?labelField="@label"></mx:MenuBar>
??<mx:TextArea?x="0"?y="35"?width="483"?height="218"?id="txtall"/>
?</mx:Panel>
?<mx:Script>
??<![CDATA[
???import?mx.controls.MenuBar;
???import?mx.controls.Alert;
???import?mx.events.MenuEvent;
???import?mx.collections.*;
???[Bindable]
???public?var?xmllistcollection:XMLListCollection;
???private?var?xmllist:XMLList=
???<>
????<menuitem?label="文件"?data="file">
?????<menuitem?label="打开"?data="new"/>
?????<menuitem?label="保存"?data="save"/>
?????<menuitem?type="separator"/>
?????<menuitem?label="关闭"?data="close"/>
????</menuitem>
????<menuitem?label="编辑"?data="edit">
?????<menuitem?label="撤销"?data="undo"?type="check"/>
?????<menuitem?label="重做"?data="redo"?type="check"/>
?????<menuitem?type="separator"/>
?????<menuitem?label="操作"?data="command">
??????<menuitem?label="剪贴"?type="radio"?data="cut"?groupName="one"/>
??????<menuitem?label="复制"?type="radio"?data="copy"?groupName="one"/>
?????</menuitem>
????</menuitem>
???</>;
???
???private?function?initCollrction():void{
????xmllistcollection=new?XMLListCollection(xmllist);
???}
???
???private?function?menuevent(event:MenuEvent):void{
????txtall.text+=event.label+"-"+event.index+"n";
???}
???
??]]>
?</mx:Script>
</mx:Application>

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