flex 菜单栏 create menu for flex

obj.addEventListener(RightClickManager.RIGHT_CLICK,treeRightClickHandler);

//mx:Tree控件右击事件
private function treeRightClickHandler(event:ContextMenuEvent):void
{
 tree_onRightClicked(event); 
 tree_removeMenu();
 tree_InitMenu();
}

//生成右键菜单
private function tree_InitMenu():void
{
 menu = Menu.createMenu(this,tree_createMenuItems(),false);
 menu.iconField="itemIcon";//右键菜单的图标
 menu.labelField="label";  //右键菜单的名称 
 menu.variableRowHeight = true;     
 menu.addEventListener(MenuEvent.ITEM_CLICK,tree_MenuItemSelected);  //右键菜单的事件
 var point:Point = new Point(mouseX,mouseY);  
 point = localToGlobal(point);   
 menu.show(point.x,point.y);  //显示右键菜单
}

private function tree_createMenuItems():Array  
{  
 var menuItems:Array = new Array();
  DeviceRightMenu(menuItems);
  return menuItems;  
}

private function DeviceRightMenu(menuItems:Array):void
{
 var menuItem:Object = new Object;  
 menuItem.label = "立即定位"; //菜单项名称
 menuItem.itemIcon = this.hisIcon;//菜单项图标
 menuItems.push(menuItem);
}

//菜单项点击事件
private function tree_MenuItemSelected(event:MenuEvent):void
{
 var menuItem:Object = event.menu.selectedItem as Object;
 switch(menuItem.label)
 {
  case "切换到文本窗口模式":
  break;
  
  default:
  ExternalInterface.call("showAlert","此功能正在开发中...");
  break;
  
 }
}