User Guide

ComboBox.itemRollOver 185
ComboBox.itemRollOver
Availability
Flash Player 6 (6.0.79.0).
Edition
Flash MX 2004.
Usage
var listenerObject:Object = new Object();
listenerObject.itemRollOver = function(eventObject:Object) {
// Your code here.
};
comboBoxInstance.addEventListener("itemRollOver", listenerObject)
Event object
In addition to the standard properties of the event object, the itemRollOver event has an
index property. The index is the number of the item that the pointer rolled over.
Description
Event; broadcast to all registered listeners when the pointer rolls over pop-up list items. This is
a List event that is broadcast from a combo box. For more information, see
List.itemRollOver.
Using the dispatcher/listener event model, a component instance (
comboBoxInstance)
dispatches an event (in this case,
itemRollOver) 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. For more
information, see “EventDispatcher class” on page 499.
Finally, you call the
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.