Package	fl.accessibility
Class	public class CheckBoxAccImpl
Inheritance	CheckBoxAccImpl LabelButtonAccImpl AccImpl
Subclasses	RadioButtonAccImpl

Language Version :

ActionScript 3.0

Runtime Versions :

AIR 1.0, Flash Player 9.0.28.0

The CheckBoxAccImpl class, also called the CheckBox Accessibility Implementation class, is used to make a CheckBox component accessible. This class enables communication between a CheckBox component and a screen reader. Screen readers are used to translate screen content into synthesized speech or braille for visually impaired users.

The CheckBoxAccImpl class supports system roles, object-based events, and states.

A CheckBox reports the role ROLE_SYSTEM_CHECKBUTTON (0x2C) to a screen reader.

A CheckBox reports the following states to a screen reader:

• STATE_SYSTEM_NORMAL (0x00000000)
• STATE_SYSTEM_UNAVAILABLE (0x00000001)
• STATE_SYSTEM_FOCUSED (0x00000004)
• STATE_SYSTEM_PRESSED (0x00000008)
• STATE_SYSTEM_CHECKED (0x00000010)
• STATE_SYSTEM_FOCUSABLE (0x00100000)

A CheckBox dispatches the following events to a screen reader:

• EVENT_OBJECT_STATECHANGE (0x800A)
• EVENT_OBJECT_NAMECHANGE (0x800C)

Screen reader users can activate a Checkbox component with the spacebar or the Enter key.

See also

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