Accessibility Structures
This section describes the structures used to implement Windows accessibility features.
In this section
| Structure | Description |
|---|---|
| ACCESSTIMEOUT |
Contains information about the time-out period associated with the Microsoft Win32 accessibility features. The accessibility time-out period is the length of time that must pass without keyboard and mouse input before the operating system automatically turns off accessibility features. The accessibility time-out is designed for computers that are shared by several users so that options selected by one user do not inconvenience a subsequent user. The accessibility features affected by the time-out are the FilterKeys features (SlowKeys, BounceKeys, and RepeatKeys), MouseKeys, ToggleKeys, and StickyKeys. The accessibility time-out also affects the high contrast mode setting. |
| FILTERKEYS |
Contains information about the FilterKeys accessibility feature, which enables a user with disabilities to set the keyboard repeat rate (RepeatKeys), acceptance delay (SlowKeys), and bounce rate (BounceKeys). |
| HIGHCONTRAST |
Contains information about the high contrast accessibility feature. |
| MOUSEKEYS |
Contains information about the MouseKeys accessibility feature. When the MouseKeys feature is active, the user can use the numeric keypad to control the mouse pointer, and to click, double-click, drag, and drop. By pressing NUMLOCK, the user can toggle the numeric keypad between mouse control mode and normal operation. |
| SERIALKEYS |
Contains information about the SerialKeys accessibility feature, which interprets data from a communication aid attached to a serial port as commands causing the system to simulate keyboard and mouse input. |
| SOUNDSENTRY |
Contains information about the SoundSentry accessibility feature. When the SoundSentry feature is on, the computer displays a visual indication only when a sound is generated. |
| STICKYKEYS |
Contains information about the StickyKeys accessibility feature. When the StickyKeys feature is on, the user can press a modifier key (SHIFT, CTRL, or ALT) and then another key in sequence rather than at the same time, to enter shifted (modified) characters and other key combinations. |
| TOGGLEKEYS |
Contains information about the ToggleKeys accessibility feature. When the ToggleKeys feature is on, the computer emits a high-pitched tone whenever the user turns on the CAPS LOCK, NUM LOCK, or SCROLL LOCK key, and a low-pitched tone whenever the user turns off one of those keys. |