MACROMEDIA FLASH 8-COMPONENTS LANGUAGE Reference page 1351

Example
The following code returns a reference to the object that has focus and assigns it to the
variable:
tmp
var tmp = checkbox.getFocus();
UIComponent.keyDown
Availability
Flash Player 6 (6.0.79.0).
Edition
Flash MX 2004.
Usage
on(keyDown){
...
}
listenerObject = new Object();
listenerObject.keyDown = function(eventObject){
...
}
componentInstance.addEventListener("keyDown", listenerObject)
Description
Event; notifies listeners when a key is pressed. This is a very low-level event that you should
not use unless necessary, because it can affect system performance.
The first usage example uses an
component instance.
The second usage example uses a dispatcher/listener event model. A component instance
(
componentInstance
a function, also called a handler, on a listener object (
define a method with the same name as the event on the listener object; the method is called
when the event is triggered. When the event is triggered, it automatically passes an event
object (
eventObject
contain information about the event. You can use these properties to write code that handles
the event. Finally, you call the
component instance that broadcasts the event to register the listener with the instance. When
the instance dispatches the event, the listener is called.
For more information, see
handler and must be attached directly to a
on()
) dispatches an event (in this case,
) to the listener object method. Each event object has properties that
EventDispatcher.addEventListener()
"EventDispatcher class" on page
) and the event is handled by
keyDown
) that you create. You
listenerObject
method on the
499.
UIComponent.keyDown 1347