flex MenuBar

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
			   xmlns:s="library://ns.adobe.com/flex/spark" 
			   xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" initialize="initApp(event)">
	<fx:Declarations>
		<!-- 将非可视元素（例如服务、值对象）放在此处 -->
		<fx:XMLList  id="menuBar">
			<menuitem label="文件">
				<menuitem label="打开..."/>
				<menuitem label="保存"
						  enabled="false" icon="myIcon"/>
				<menuitem label="另存为..."
						  type="check"
						  toggled="true"/>
				<menuitem label=""
						  type="separator"/>
				<menuitem label="发送">
					<menuitem label="电子邮件页面"
							  type="radio"
							  groupName="one"/>
					<menuitem label="桌面快捷方式"
							  type="radio"
							  groupName="one"
							  toggled="true"/>
				</menuitem>
				<menuitem label="打印"/>
				<menuitem label="退出"/>
			</menuitem>
			<menuitem label="编辑"/>
			<menuitem label="查看"/>
			<menuitem label="工具"/>
			<menuitem label="帮助"/>
		</fx:XMLList>
	</fx:Declarations>
	<fx:Script>
		<![CDATA[
			import mx.controls.Alert;
			import mx.events.FlexEvent;
			import mx.events.MenuEvent;
			[Bindable]
			[Embed(source="icon.gif")]
			public var myIcon:Class;
			
			private function menuItemClickHandler(event:MenuEvent):void
			{
				if (event.label == "退出")
				{
					Alert.show("您单击的是退出按钮");
				}
			}
			
			protected function initApp(event:FlexEvent):void
			{
				//myMenuBar.dataProvider=menuBar;
				
			}
			
		]]>
	</fx:Script>
	<mx:Panel width="420"
			  height="350"
			  title="菜单栏"
			  paddingLeft="10"
			  paddingTop="10">
		<mx:MenuBar id="myMenuBar" dataProvider="{menuBar}"
					labelField="@label"
					iconField="@icon"
					itemClick="menuItemClickHandler(event);"
					height="30"
					width="380">
		</mx:MenuBar>
	</mx:Panel>

</s:Application>