MACROMEDIA FLASH MX 2004-USING COMPONENTS Use Manual page 618

The second usage example uses a dispatcher/listener event model. A component instance
( ) dispatches an event (in this case,
pBarInstance
function, also called a handler, on a listener object (
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
( ) to the listener object method. Each event object has properties that contain
eventObject
information about the event. You can use these properties to write code that handles the event.
Finally, you call the
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
Example
This example creates a listener object,
listener is registered to the
form
is triggered,
pBar
function.
var form:Object = new Object();
form.progress = function(eventObj){
// eventObj.target is the component that generated the progress event,
// i.e., the progress bar.
trace("Current progress value = " + eventObj.target.value);
}
pBar.addEventListener("progress", form);
See also
EventDispatcher.addEventListener()
ProgressBar.setProgress()
Availability
Flash Player 6 (6.0 79.0).
Edition
Flash MX 2004.
Usage
pBarInstance.setProgress(completed, total)
Parameters
A number indicating the amount of progress that has been made. You can use the
completed
ProgressBar.label
percentage form or any units you choose, depending on the source of the progress bar.
A number indicating the total progress that must be made to reach 100%.
total
618 Chapter 6: Components Dictionary
EventDispatcher.addEventListener()
"EventDispatcher class" on page
form
instance in the last line of code. When the
pBar
broadcasts the event to the
and
ProgressBar.conversion
) and the event is handled by a
progress
listenerObject
method on the component
415.
, and defines a
progress
listener, which calls the
form
properties to display the number in
) that you create. You define
event handler on it. The
progress
callback
progress
event