Using ActionScript 3.0 Components 
Using ActionScript 3.0 Components |
|
|
|
| Working with Components > Handling events > About the event object | |||
|
|||
|
|||
|
|||
The event object inherits from the Event object class and has properties that contain information about the event that occurred, including the target and type properties, which provide essential information about the event:
|
Property |
Description |
|---|---|
|
|
A string indicating the type of the event. |
|
|
A reference to the component instance broadcasting the event. |
When an event has additional properties, they are listed in the event's class description in the ActionScript 3.0 Language and Components Reference.
The event object is automatically generated and passed to the event handler function when an event occurs.
You can use the event object inside the function to access the name of the event that was broadcast or the instance name of the component that broadcast the event. From the instance name, you can access other component properties. For example, the following code uses the target property of the evtObj event object to access the label property of aButton and display it in the Output panel:
import fl.controls.Button;
import flash.events.MouseEvent;
var aButton:Button = new Button();
aButton.label = "Submit";
addChild(aButton);
aButton.addEventListener(MouseEvent.CLICK, clickHandler);
function clickHandler(evtObj:MouseEvent){
trace("The " + evtObj.target.label + " button was clicked");
}
|
|||
|
|||
|
|||
|
|
|
|