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	<title>中文Flex例子 &#187; KeyboardEvent</title>
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		<title>Flex中通过扩展ComboBox类重载protected keyDownHandler()事件使键盘导航(keyboard navigation)功能无效的例子</title>
		<link>http://blog.minidx.com/2008/07/16/1081.html</link>
		<comments>http://blog.minidx.com/2008/07/16/1081.html#comments</comments>
		<pubDate>Wed, 16 Jul 2008 12:07:52 +0000</pubDate>
		<dc:creator>Minidxer</dc:creator>
				<category><![CDATA[Flex]]></category>
		<category><![CDATA[ComboBox]]></category>
		<category><![CDATA[KeyboardEvent]]></category>
		<category><![CDATA[keyDownHandler]]></category>
		<category><![CDATA[键盘]]></category>

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		<description><![CDATA[在Flex中通过扩展List类重载protected keyDownHandler()事件使键盘导航(keyboard navigation)功能无效的例子和Flex中通过继承扩展Accordion类和重载protected keyDownHandler()事件使Accordion控件中键盘导航(keyboard navigation)功能无效的例子中我们了解了keyDownHandler事件以及重载的用法，接下来例子演示了Flex中通过扩展ComboBox类重载protected keyDownHandler()事件,使键盘导航(keyboard navigation)功能无效。
让我们先来看一下Demo（可以右键View Source或点击这里察看源代码）：









下面是完整代码(或点击这里察看)：
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&#60;mx:Application&#160;xmlns:mx=&#34;http://www.adobe.com/2006/mxml&#34;
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&#160; &#160; &#160; &#160; backgroundColor=&#34;white&#34;&#160;&#62;
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&#160; &#160; &#60;mx:Array&#160;id=&#34;arr&#34;&#62;
&#160; &#160; &#160; &#160; &#60;mx:Object&#160;label=&#34;One&#34; /&#62;
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		<title>Flex中通过扩展RadioButton类和重载protected keyDownHandler事件使RadioButton/RadioButtonGroup的键盘导航无效的例子</title>
		<link>http://blog.minidx.com/2008/06/24/926.html</link>
		<comments>http://blog.minidx.com/2008/06/24/926.html#comments</comments>
		<pubDate>Tue, 24 Jun 2008 14:45:10 +0000</pubDate>
		<dc:creator>Minidxer</dc:creator>
				<category><![CDATA[Flex]]></category>
		<category><![CDATA[KeyboardEvent]]></category>
		<category><![CDATA[keyDownHandler]]></category>
		<category><![CDATA[RadioButton]]></category>
		<category><![CDATA[RadioButtonGroup]]></category>

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		<description><![CDATA[接下来的例子演示了Flex中如何通过扩展RadioButton类和重载protected keyDownHandler事件，使RadioButton/RadioButtonGroup的键盘导航无效。
让我们先来看一下Demo（可以右键View Source或点击这里察看源代码）：









下面是完整代码(或点击这里察看)：
Download: main.mxml&#60;?xml version=&#34;1.0&#34; encoding=&#34;utf-8&#34;?&#62;
&#60;mx:Application&#160;xmlns:mx=&#34;http://www.adobe.com/2006/mxml&#34;
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