<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical"
verticalAlign="middle"
backgroundColor="white"
creationComplete="init()">
<mx:Script>
<![CDATA[
private function init():void {
systemManager.addEventListener(MouseEvent.MOUSE_WHEEL, doMouseWheel);
}
private function doMouseWheel(evt:MouseEvent):void {
num += evt.delta;
}
]]>
</mx:Script>
<mx:Number id="num">0</mx:Number>
<mx:NumberFormatter id="numberFormatter" />
<mx:ApplicationControlBar dock="true">
<mx:Label text="Click the stage and scroll mouse wheel to begin." />
</mx:ApplicationControlBar>
<mx:Label text="{numberFormatter.format(num)}"
fontSize="96" />
</mx:Application>