<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"  viewSourceURL="srcview/index.html">
    <mx:initialize><![CDATA[
        systemManager.stage.addEventListener( 
            FullScreenEvent.FULL_SCREEN, 
            function(event: FullScreenEvent): void {  fullScreen = event.fullScreen; }
        );
    ]]></mx:initialize>
    
    <mx:Script><![CDATA[
            private var _fullScreen: Boolean;
            [Bindable] public function get fullScreen(): Boolean { return _fullScreen; }
            public function set fullScreen(isFull:Boolean):void {
                _fullScreen = isFull;
                stage.displayState = (isFull) ? StageDisplayState.FULL_SCREEN : StageDisplayState.NORMAL;
            }
    ]]></mx:Script>
    
    <mx:CheckBox id="fs" label="Full Screen" 
        click="fullScreen=event.target.selected" selected="{fullScreen}" 
        horizontalCenter="0" verticalCenter="0"/>

</mx:Application>