Flash CS3 Documentation

Using ActionScript 3.0 Components > Using the UI Components > Using the Button > User interaction with the Button

User interaction with the Button

You can enable or disable a button in an application. In the disabled state, a button doesn't receive mouse or keyboard input. An enabled button receives focus if you click it or tab to it. When a Button instance has focus, you can use the following keys to control it:

For more information about controlling focus, see the IFocusManager interface and the FocusManager class in the  ActionScript 3.0 Language and Components Reference and Working with FocusManager.

A live preview of each Button instance reflects changes made to parameters in the Property inspector or Component inspector during authoring.

To designate a button as the default push button in an application (the button that receives the click event when a user presses Enter), set FocusManager.defaultButton. For example, the following code sets the default button to be a Button instance called submitButton.

FocusManager.defaultButton = submitButton;

When you add the Button component to an application, you can make it accessible to a screen reader by adding the following lines of ActionScript code:

import fl.accessibility.ButtonAccImpl;

ButtonAccImpl.enableAccessibility();

You enable accessibility for a component only once, regardless of how many instances you create.

Flash CS3