Add Event handler for VBox
<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
creationComplete="initApp()">
<mx:Script>
private function initApp():void {
application.addEventListener(KeyboardEvent.KEY_UP, keyHandler);
my_vbox.addEventListener(KeyboardEvent.KEY_UP, keyHandler);
my_textinput.addEventListener(KeyboardEvent.KEY_UP, keyHandler);
my_textinput.setFocus();
}
private function keyHandler(event:KeyboardEvent):void {
trace(event.target + "(" + event.currentTarget + "): " + event.keyCode + "/" + event.charCode);
}
</mx:Script>
<mx:VBox id="my_vbox">
<mx:TextInput id="my_textinput" />
</mx:VBox>
</mx:Application>
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