User Guide

362 Chapter 2: ActionScript Language Reference

Key.onKeyUp

Availability

Flash Player 6.

Usage

keyListener.onKeyUp

Description

Listener; notified when a key is released. To use onKeyUp, you must create a listener object. You

can then define a function for

onKeyUp and use addListener() to register the listener with the

Key object, as shown in the following example:

var keyListener:Object = new Object();

keyListener.onKeyDown = function() {

trace("DOWN -> Code: "+Key.getCode()+"\tACSII: "+Key.getAscii()+"\tKey:

"+chr(Key.getAscii()));

};

keyListener.onKeyUp = function() {

trace("UP -> Code: "+Key.getCode()+"\tACSII: "+Key.getAscii()+"\tKey:

"+chr(Key.getAscii()));

};

Key.addListener(keyListener);

Listeners enable different pieces of code to cooperate because multiple listeners can receive

notification about a single event.