User Guide

266 Chapter 6: Components Dictionary
trace("The cell at " + cell + " has been clicked");
};
grid.addEventListener("cellPress", myListener);
DataGrid.change
Availability
Flash Player 6 (6.0 79.0).
Edition
Flash MX Professional 2004.
Usage
listenerObject = new Object();
listenerObject.change = function(eventObject){
// insert your code here
}
myDataGridInstance.addEventListener("change", listenerObject)
Description
Event; broadcast to all registered listeners when an item has been selected.
Version 2 components use a dispatcher/listener event model. When a DataGrid component
dispatches a
change event, the event is handled by a function (also called a handler) that is
attached to a listener object (
listenerObject) that you create. You call the
addEventListener() method and pass it the name of the handler as a parameter.
When the event is triggered, it automatically passes an event object (
eventObject) to the
handler. Each event object has properties that contain information about the event. You can use
these properties to write code that handles the event. The
DataGrid.change event’s event object
has one additional property,
type, whose value is "change". For more information, see
“EventDispatcher class” on page 415.
Example
In the following example, a handler called myListener is defined and passed to
grid.addEventListener() as the second parameter. The event object is captured by change
handler in the
eventObject parameter. When the change event is broadcast, a trace statement
is sent to the Output panel.
var myListener = new Object();
myListener.change = function(event) {
trace("The selection has changed to " + event.target.selectedIndex);
};
grid.addEventListener("change", myListener);