User Guide

492 Chapter 6: Components Dictionary
The second usage example uses a dispatcher/listener event model. A component instance
(
loaderInstance) dispatches an event (in this case, complete) and the event is handled by a
function, also called a handler, on a listener object (
listenerObject) that you create. You 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) to the listener object method. Each event object has properties that contain
information about the event. You can use these properties to write code that handles the event.
Finally, you call the
EventDispatcher.addEventListener() method on 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 “EventDispatcher class” on page 415.
Example
The following example creates a Loader component and then defines a listener object with a
complete event handler that sets the loader’s visible property to true:
createClassObject(mx.controls.Loader, "loader", 0);
loadListener = new Object();
loadListener.complete = function(eventObj){
loader.visible = true;
}
loader.addEventListener("complete", loadListener);
loader.contentPath = "logo.swf";
Loader.content
Availability
Flash Player 6 (6.0 79.0).
Edition
Flash MX 2004.
Usage
loaderInstance.content
Description
Property (read-only); a reference to a movie clip instance that contains the contents of the loaded
file. The value is
undefined until the load begins.
See also
Loader.contentPath