Flex中如何利用useHandCursor和buttonMode属性在鼠标移到图片上显示手型光标的

<?xml version="1.0" encoding="utf-8"?> 
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" 
        layout="vertical" 
        verticalAlign="middle" 
        backgroundColor="white"> 
  
    <mx:ApplicationControlBar dock="true"> 
        <mx:Form styleName="plain"> 
            <mx:FormItem label="useHandCursor:"> 
                <mx:CheckBox id="checkBox1" selected="true" /> 
            </mx:FormItem> 
            <mx:FormItem label="buttonMode:"> 
                <mx:CheckBox id="checkBox2" selected="true" /> 
            </mx:FormItem> 
        </mx:Form> 
    </mx:ApplicationControlBar> 
  
    <mx:Image id="img" 
            source="http://www.helpexamples.com/flash/images/image1.jpg" 
            useHandCursor="{checkBox1.selected}" 
            buttonMode="{checkBox2.selected}" /> 
  
</mx:Application>