<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2007/08/07/creating-full-screen-flex-applications/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" applicationComplete="init(event)" viewSourceURL="srcview/index.html">

    <mx:Script>
        <![CDATA[
            import flash.display.StageDisplayState;

            private function init(evt:Event):void {
                /* Set up full screen handler. */
                Application.application.stage.addEventListener(FullScreenEvent.FULL_SCREEN, fullScreenHandler);
                dispState = Application.application.stage.displayState;
            }

            private function fullScreenHandler(evt:FullScreenEvent):void {
                dispState = Application.application.stage.displayState + " (fullScreen=" + evt.fullScreen.toString() + ")";
                if (evt.fullScreen) {
                    /* Do something specific here if we switched to full screen mode. */
                } else {
                    /* Do something specific here if we switched to normal mode. */
                }
            }

            private function toggleFullScreen():void {
                try {
                    switch (Application.application.stage.displayState) {
                        case StageDisplayState.FULL_SCREEN:
                            /* If already in full screen mode, switch to normal mode. */
                            Application.application.stage.displayState = StageDisplayState.NORMAL;
                            break;
                        default:
                            /* If not in full screen mode, switch to full screen mode. */
                            Application.application.stage.displayState = StageDisplayState.FULL_SCREEN;
                            break;
                    }
                } catch (err:SecurityError) {
                    // ignore
                }
            }
        ]]>
    </mx:Script>

    <mx:String id="dispState" />

    <mx:Label text="width={Application.application.width}" />
    <mx:Label text="height={Application.application.height}" />
    <mx:Label text="displayState={dispState}" />

    <mx:Button label="Toggle fullscreen" click="toggleFullScreen()" />

</mx:Application>