frameworks/projects/airframework/asdoc/en_US/spark/components/examples/WindowedApplicationSample.mxml

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

  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
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      http://www.apache.org/licenses/LICENSE-2.0

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  distributed under the License is distributed on an "AS IS" BASIS,
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<s:WindowedApplication
    xmlns:fx="http://ns.adobe.com/mxml/2009"
    xmlns:mx="library://ns.adobe.com/flex/mx"
    xmlns:s="library://ns.adobe.com/flex/spark"
    creationComplete="doCreationComplete();">

    <fx:Script>
        <![CDATA[
            import mx.controls.FlexNativeMenu;
            import mx.events.FlexNativeMenuEvent;

            [Embed(source="TestImage.jpg")]
            [Bindable]
            public var TestImage:Class;

            private var menu1:FlexNativeMenu;
            private var menu2:FlexNativeMenu;

            /**
             * Set up the icon and menus.
             **/
            private function doCreationComplete():void {
                setUpIcon();
            
                menu1 = new FlexNativeMenu();
                menu1.addEventListener(mx.events.FlexNativeMenuEvent.ITEM_CLICK, handleMenuItemClick);
                menu1.dataProvider = menuData1;
                menu1.labelField = "@label";
                menu1.showRoot = false;

                menu2 = new FlexNativeMenu();
                menu2.addEventListener(mx.events.FlexNativeMenuEvent.ITEM_CLICK, handleMenuItemClick);
                menu2.dataProvider = menuData2;
                menu2.labelField = "@label";
                menu2.showRoot = false;

                // Mac dock
                dockIconMenu = menu1;
        
                // Windows system tray
                systemTrayIconMenu = menu1;
        
                // Mac and Windows
                menu = menu2;
            }

            /**
             * Set up the icon which appears in the sytem tray (Win)
             * or the dock (Mac).
             **/
            private function setUpIcon():void {
                nativeApplication.icon.bitmaps = new Array(new TestImage().bitmapData);
            }

            /**
             * If someone chooses Exit from either menu, then exit.
             **/
            private function handleMenuItemClick(e:mx.events.FlexNativeMenuEvent):void { 
                if(e.label == "Exit"){
                    exit();
                }
            }
        ]]>
    </fx:Script>

    <fx:Declarations>
        <!-- We use this one for the system tray or dock. -->
        <fx:XML format="e4x" id="menuData1">
            <root>
                <menuitem label="Exit" />
            </root>
        </fx:XML>

        <!-- We use this one for the menu on top. -->
        <fx:XML format="e4x" id="menuData2">
            <root>
                <menuitem label="File" >
                    <menuitem label="Exit" />
                </menuitem>
            </root>
        </fx:XML>
    </fx:Declarations>
</s:WindowedApplication>