Flex4如何选择菜单栏中的菜单项

Question

我在火花面板中有一个菜单栏，我想通过使用Actionscript选择其中一个菜单项我不知道如何定位其中一个项目。这是我的组件代码的摘录。

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

<s:layout> 
    <s:BasicLayout /> 
</s:layout> 
<fx:Script> 
    <![CDATA[ 
     import events.CustomMenuEvent; 

     import mx.collections.ArrayCollection; 
     import mx.events.MenuEvent; 

     public function update(id:String):void 
     { 
      // This is where I would call the menu to update the button 
          // from its mediator. 
     } 

     protected function appMenu_itemClickHandler(event:MenuEvent):void 
     { 
      var data:String = event.item.@data; 
      var menuEvent:CustomMenuEvent = new CustomMenuEvent(CustomMenuEvent.ITEM_CLICKED); 
      menuEvent.toggled = Boolean(event.item.@toggled == "true"); 
      menuEvent.data = data; 
      dispatchEvent(menuEvent); 
     } 
    ]]> 
</fx:Script> 

<fx:Declarations> 
    <fx:XMLList id="menuXML"> 
     <fx:menuitem label="File"> 
      <fx:menuitem label="Open" data="open"/> 
      <fx:menuitem label="Exit" data="exit"/> 
     </fx:menuitem> 
     <fx:menuitem label="View"> 
      <fx:menuitem label="Map" type="check" data="map"/> 
      <fx:menuitem label="Flights" type="check" data="flights"/> 
      <fx:menuitem label="Altitude Graph" type="check" data="altitude"/> 
     </fx:menuitem> 
    </fx:XMLList> 
</fx:Declarations> 

<s:controlBarContent> 
    <mx:MenuBar id="appMenu" 
       labelField="@label" 
       showRoot="true" 
       dataProvider="{menuXML}" 
       itemClick="appMenu_itemClickHandler(event)"/> 
</s:controlBarContent> 

Answer 1

好，我发现这个职位它几乎我想要做什么。

Programatically enable/disable menuBar buttons in Flex 4