Extending existing component classes

When creating a component symbol that derives from a parent class, you link it to an external ActionScript 2.0 class file. (For information on defining this file, see Creating a new component symbol.)

The external ActionScript class extends another class, adds methods, adds getters and setters, and defines event handlers for the component. To edit ActionScript class files, you can use Flash, any text editor, or any Integrated Development Environment (IDE).

You can inherit from only one class. ActionScript 2.0 does not allow multiple inheritance.