User Guide

684 ActionScript classes
Example
The following example calls the
isToggled() method any time a key is pressed and executes
a trace statement any time the Caps Lock key is toggled to an active state. The example creates
a listener object named
keyListener and defines a function that responds to the onKeyDown
event by calling
Key.isToggled(). The keyListener object is then registered to the Key
object, which broadcasts the
onKeyDown message whenever a key is pressed while the SWF file
plays.
var keyListener:Object = new Object();
keyListener.onKeyDown = function() {
if (Key.isDown(Key.CAPSLOCK)) {
trace("you pressed the Caps Lock key.");
trace("\tCaps Lock == "+Key.isToggled(Key.CAPSLOCK));
}
};
Key.addListener(keyListener);
Information displays in the Output panel when you press the Caps Lock key. The Output
panel displays either
true or false, depending on whether the Caps Lock is activated using
the isToggled method.
The following example creates two text fields that update when the Caps Lock and Num Lock
keys are toggled. Each text field displays true when the key is activated, and false when the key
is deactivated.
this.createTextField("capsLock_txt", this.getNextHighestDepth(), 0, 0, 100,
22);
capsLock_txt.autoSize = true;
capsLock_txt.html = true;
this.createTextField("numLock_txt", this.getNextHighestDepth(), 0, 22, 100,
22);
numLock_txt.autoSize = true;
numLock_txt.html = true;
//
var keyListener:Object = new Object();
keyListener.onKeyDown = function() {
capsLock_txt.htmlText = "<b>Caps Lock:</b> "+Key.isToggled(Key.CAPSLOCK);
numLock_txt.htmlText = "<b>Num Lock:</b> "+Key.isToggled(144);
};
Key.addListener(keyListener);
The MovieClip.getNextHighestDepth() method used in this example requires Flash Player
7 or later. If your SWF file includes a version 2 component, use the version 2 components
DepthManager class instead of the
MovieClip.getNextHighestDepth() method.