ADOBE® FLEX® 3: CREATING AND EXTENDING ADOBE FLEX 3 COMPONENTS

CHAPTER 2

16

import mx.controls.Button;

// Import all classes in the mx.events package

import mx.events.*;

// Class definition goes here.

public class MyButton extends Button {

// Define properties, constructor, and methods.

}

}

The class definition of your component must be prefixed by the public keyword, or it cannot be used as an

MXML tag. A file that contains a class definition can have one, and only one, public class definition, although it

can have additional internal class definitions. Place any internal class definitions at the bottom of your source file

below the closing curly brace of the package definition.

In a single ActionScript file, you ...