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TOGGLEKEYS structure (winuser.h)

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.

Syntax

typedef struct tagTOGGLEKEYS {
 UINT cbSize;
 DWORD dwFlags;
} TOGGLEKEYS, *LPTOGGLEKEYS;

Members

cbSize

Type: DWORD

Specifies the size, in bytes, of this structure.

dwFlags

Type: DWORD

A set of bit flags that specify properties of the ToggleKeys feature. The following bit flag values are defined:

Value Meaning
TKF_AVAILABLE
0x00000002
 If this flag is set, the ToggleKeys feature is available.
TKF_CONFIRMHOTKEY
0x00000008
 Windows 95/98, Windows 2000: A confirmation dialog box appears when the ToggleKeys feature is activated by using the hot key.
TKF_HOTKEYACTIVE
0x00000004
 If this flag is set, the user can turn the ToggleKeys feature on and off by holding down the NUM LOCK key for eight seconds.
TKF_HOTKEYSOUND
0x00000010
 If this flag is set, the system plays a siren sound when the user turns the ToggleKeys feature on or off by using the hot key.
TKF_INDICATOR
0x00000020
 This flag is not implemented.
TKF_TOGGLEKEYSON
0x00000001
 If this flag is set, the ToggleKeys feature is on.

Remarks

An application uses a TOGGLEKEYS structure when calling the SystemParametersInfo function with the uiAction parameter set to SPI_GETTOGGLEKEYS or SPI_SETTOGGLEKEYS. When using SPI_GETTOGGLEKEYS, an application must specify the cbSize member of the TOGGLEKEYS structure; the SystemParametersInfo function fills the remaining members. An application must specify all structure members when using the SPI_SETTOGGLEKEYS value.

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Header winuser.h (include Windows.h)

See also

Accessibility Structures

SystemParametersInfo

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