flex组合键

用快捷键必有一个键先按下，所以用KeyboardEvent.KEY_UP来判断
使用事件的时候，注意焦点要在容器内。

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
			   xmlns:s="library://ns.adobe.com/flex/spark" 
			   xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" creationComplete="creationCompleteHandler(event)">
	<s:layout>
		<s:VerticalLayout horizontalAlign="center" verticalAlign="middle" gap="0"/>
	</s:layout>
	<fx:Declarations>
		<!-- 将非可视元素（例如服务、值对象）放在此处 -->
	</fx:Declarations>
	<fx:Script>
		<![CDATA[
			import mx.controls.Alert;
			import mx.events.FlexEvent;
			
			private function creationCompleteHandler(event:FlexEvent):void
			{
				bc.addEventListener( KeyboardEvent.KEY_UP, keyBoardHandler );
				
			}
			
			private function keyBoardHandler(event:KeyboardEvent):void{
				var code:int = event.keyCode;
				var ctrl:Boolean=event.ctrlKey;
				if(ctrl)
				{
					Alert.show("ctrl+"+code)
				}else{
					Alert.show(code.toString())
				}
				text.text = ctrl+","+code;
				trace(ctrl+","+code);
			}
			
		]]>
	</fx:Script>
	<s:BorderContainer id="bc" width="500" height="500" backgroundColor="0xff0000" borderStyle="solid" borderWeight="5" borderColor="0x000000">
		<s:TextInput width="300" height="100"/>
	</s:BorderContainer>
	<s:TextInput id="text" width="100" height="25"/>
</s:Application>