设置NumericStepper组件圆角半径.

cornerRadius样式学习.
示例：

代码：

<? xml version="1.0" encoding="utf-8" ?>
<!--  http://blog.flexexamples.com/2008/05/13/setting-the-corner-radius-on-a-numericstepper-control-in-flex/  -->
< mx:Application  xmlns:mx ="http://www.adobe.com/2006/mxml"
        layout ="vertical"
        verticalAlign ="middle"
        backgroundColor ="white" >

     < mx:Script >
         <![CDATA[
            private function init():void {
                slider.value = numericStepper.getStyle("cornerRadius");
            }
         ]]>
     </ mx:Script >

     < mx:ApplicationControlBar  dock ="true" >
         < mx:Form  styleName ="plain" >
             < mx:FormItem  label ="cornerRadius:" >
                 < mx:HSlider  id ="slider"
                        minimum ="0"
                        maximum ="10"
                        liveDragging ="true"
                        snapInterval ="1"
                        tickInterval ="1"   />
             </ mx:FormItem >
         </ mx:Form >
     </ mx:ApplicationControlBar >

     < mx:NumericStepper  id ="numericStepper"
            cornerRadius =" {slider.value} "
            initialize ="init();"   />

</ mx:Application >