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我也要
有点类似于HTML标记中的HR，不过多了垂直标尺就更方便了。
创建方法
水平 <mx:HRule />
2. 垂直 <mx:VRule />
其基本属性有：
color 颜色
shadowColor 阴影颜色
strokeWidth 厚度或宽度
对hrule和vrule使用样式
<mx:Style>
2. .thickRule { strokeWidth: 5 }
3. HRule { color: #123456; shadowColor: #654321 }
4. </mx:Style>
5. <mx:HRule styleName='thickRule' />
PS：需要注意的是，对VRule定义width和HRule定义height都是无效的，应使用strokeWidth属性。
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Flex中如何通过strokeWidth, strokeColor和shadowColor样式，创建一个自定义风格的HRule或VRule
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