ComboBox.itemRollOut

Availability

Flash Player 6.0.79.

Edition

Flash MX 2004.

Usage

Usage 1:

on(itemRollOut){
  // your code here
}

Usage 2:

listenerObject = new Object();
listenerObject.itemRollOut = function(eventObject){
  // your code here
}
comboBoxInstance.addEventListener("itemRollOut", listenerObject)

Event Object

In addition to the standard properties of the event object, the itemRollOut event has an additional property: index. The index is the number of the item that was rolled out.

Description

Event; broadcast to all registered listeners when the pointer rolls out of drop-down list items. This is a List event that is broadcast from a combo box. For more information, see List.itemRollOut.

The first usage example uses an on() handler and must be attached directly to a ComboBox component instance. The keyword this, used inside an on() handler attached to a component, refers to the component instance. For example, the following code, attached to the ComboBox component instance myBox, sends "_level0.myBox" to the Output panel:

on(itemRollOut){
  trace(this);
}

The second usage example uses a dispatcher/listener event model. A component instance (comboBoxInstance) dispatches an event (in this case, itemRollOut) and the event is handled by a function attached to 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 a set of properties that contains information about the event. You can use these properties to write code that handles the event. For more information about event objects, see Event Objects.

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.

Example

The following example sends a message to the Output panel that indicates which item index number has been rolled off of:

form.itemRollOut = function (eventObj) {
  trace("Item #" + eventObj.index + " has been rolled out of.");
}
myCombo.addEventListener("itemRollOut", form);