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);
}