Listening for the Enter key in a Spark RichEditableText control in Flex 4

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2010/02/12/listening-for-the-enter-key-in-a-spark-richeditabletext-control-in-flex-4/ -->
<s:Application name="Spark_RichEditableText_enter_test"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx">
 
    <fx:Script>
        <![CDATA[
            import mx.events.FlexEvent;
 
            protected function richeditabletext1_enterHandler(evt:FlexEvent):void {
                lbl.text = "You hit '" + evt.type +"', ouch!";
                setTimeout(clearLabel, 1000 /* 1 second */);
            }
 
            protected function clearLabel():void {
                lbl.text = "";
            }
        ]]>
    </fx:Script>
 
    <s:VGroup horizontalCenter="0" verticalCenter="0">
        <s:RichEditableText id="richEdTxt"
                widthInChars="10"
                heightInLines="1"
                verticalAlign="middle"
                lineBreak="explicit"
                multiline="false"
                backgroundColor="white"
                fontSize="32"
                initialize="richEdTxt.text = mx_internal::VERSION;"
                enter="richeditabletext1_enterHandler(event);" />
        <s:Label id="lbl" />
    </s:VGroup>
 
</s:Application>