flex4 给Group增加边框

转载自：http://www.java2s.com/Code/Flex/Style/DrawaborderaroundaVGroupthatcontainsButtoncontrolswithoutusingacustomskinclass.htm

实例代码如下：

<!--Draw a border around a VGroup that contains Button controls without using a custom skin class-->
	<s:Group>
		<!-- border/background graphics -->
		<s:Rect width="100%" height="100%">
			<s:stroke>
				<s:SolidColorStroke color="0x000000" weight="2" />
			</s:stroke>
		</s:Rect>
		<!-- content of container -->
		<s:VGroup left="10" top="10" right="10" bottom="10">
			<s:Button label="Click Me" />
			<s:Button label="Click Me" />
		</s:VGroup>
	</s:Group>

还可以使用?BorderContainer 包围 group。

<s:BorderContainer right="20" top="10" backgroundAlpha="0">
	<s:Group>
		....
	</s:Group>
</s:BorderContainer>