Create the global listener for handling the keyboard event

        
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" 
    creationComplete="init()">
    <mx:Script>
        
        
            import mx.controls.Alert;           
            import flash.events.KeyboardEvent;
            private function init():void 
            {
                this.addEventListener(KeyboardEvent.KEY_DOWN, keyHandler  ); 
            }
            private function keyHandler  (evt:KeyboardEvent):void 
            {
                myText.text += "The key with the keycode" + evt.keyCode + " \n";
            }           
        
      
    </mx:Script> 
    <mx:TextArea id="myText" editable="false"/>
</mx:Application>

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Create the global listener for handling the keyboard event : Key Event « Event « Flex

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