TOGGLEKEYS
The TOGGLEKEYS
structure 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.
typedef struct tagTOGGLEKEYS { // tk
DWORD
cbSize;
DWORD
dwFlags;
} TOGGLEKEYS;
Members
cbSize
Specifies the
size, in bytes, of this structure.
dwFlags
A set of bit
flags that specify properties of the ToggleKeys feature. The following bit flag
values are defined:
|
Value |
Meaning |
|
TKF_AVAILABLE |
If this
flag is set, the ToggleKeys feature is available. |
|
TKD_CONFIRMHOTKEY |
Windows
95 only: A confirmation dialog box
appears when the Togglekeys feature is activated by using the hot key. |
|
TKF_HOTKEYACTIVE |
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 |
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_TOGGLEKEYSON |
If this
flag is set, the ToggleKeys feature is on. |
Remarks
An
application uses a TOGGLEKEYS structure when calling the SystemParametersInfo
function with the wAction 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 SETTOGGLEKEYS value.
See Also