Flex3学习轨迹：使用行为实现按钮放大（三）

原理是使用ActionScript 的setStyle() getStyle()方法来设置触发器的效果。

调用效果的时候必须使用play()方法。

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" fontSize="12">
    <mx:Script>
        <![CDATA[
            import mx.effects.Zoom;
            public function zoomButtonDown():void
            {
                var zoomLarge:Zoom = new Zoom();
                zoomLarge.target = button1;
                zoomLarge.duration = 100;
                zoomLarge.zoomHeightTo = 2.5;
                zoomLarge.zoomWidthTo = 2.5;
                zoomLarge.play();
            }
            public function zoomButtonUp():void
            {
                var zoomSmall:Zoom = new Zoom();
                zoomSmall.target = button1;
                zoomSmall.duration = 50;
                zoomSmall.zoomHeightTo = 1;
                zoomSmall.zoomWidthTo = 1;
                zoomSmall.play();
            }
        ]]>
    </mx:Script>    
    <mx:Panel title="创建效果" width="240" height="160" 
        verticalAlign="middle" horizontalAlign="center"> 
        <mx:Button id="button1" label="Click" 
            mouseDown="zoomButtonDown();" mouseUp="zoomButtonUp();"/>
    </mx:Panel>
</mx:Application>