MACROMEDIA FLASH MX 2004-USING COMPONENTS Use Manual page 196

The second usage example uses a dispatcher/listener event model. A component instance
(
comboBoxInstance
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
( ) 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.
For more information, see
Finally, you call the
the event to register the listener with the instance. When the instance dispatches the event, the
listener is called.
Example
The following example sends a message to the Output panel that indicates the index of the item
that the pointer rolled out of:
form.itemRollOut = function (eventObj) {
trace("Item #" + eventObj.index + " has been rolled out of.");
}
myCombo.addEventListener("itemRollOut", form);
See also
ComboBox.itemRollOver
ComboBox.itemRollOver
Availability
Flash Player 6 (6.0 79.0).
Edition
Flash MX 2004.
Usage
Usage 1:
on(itemRollOver){
// your code here
}
Usage 2:
listenerObject = new Object();
listenerObject.itemRollOver = function(eventObject){
// your code here
}
comboBoxInstance.addEventListener("itemRollOver", listenerObject)
Event object
In addition to the standard properties of the event object, the
property. The index is the number of the item that the pointer rolled over.
196 Chapter 6: Components Dictionary
) dispatches an event (in this case,
"EventDispatcher class" on page
addEventListener()
,
EventDispatcher.addEventListener()
itemRollOut
listenerObject
415.
method on the component instance that broadcasts
itemRollOver
) and the event is handled by
) that you create. You
event has an
index