<?xml version="1.0" encoding="utf-8"?>

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">

    <mx:Script>

        <![CDATA[

            import mx.events.*;

            import mx.controls.*;

            //事件函数，弹出提示窗口

            public function itemClickHandler(event:MenuEvent):void {

                Alert.show("菜单标签: " + event.label);

            }

        ]]>

    </mx:Script>

    <!-- 菜单数据源 -->

    <mx:XMLList id="treeDP">

        <node label="菜单A"/>

        <node label="菜单B">

            <node label="菜单B-1" data="6"/>

            <node label="菜单B-2"/>

        </node>

        <node label="菜单C"/>

    </mx:XMLList>

    <mx:Panel title="弹出菜单按钮控件示例" height="50%" width="50%"

        paddingTop="10" paddingLeft="10" paddingRight="10">

        <mx:PopUpMenuButton id="popbnt"

            dataProvider="{treeDP}"

            labelField="@label"

            itemClick="itemClickHandler(event);"/>

    </mx:Panel>

</mx:Application>