The HIGHCONTRAST structure contains information about the High Contrast Mode accessibility feature, which sets the appearance scheme of the user interface for maximum visibility for a visually-impaired user, and advises applications to comply with this appearance scheme.
typedef struct tagHIGHCONTRAST { // hc UINT cbSize; DWORD dwFlags; LPTSTR lpszDefaultScheme; } HIGHCONTRAST, FAR* LPHIGHCONTRAST;
Value |
Meaning |
HCF_AVAILABLE |
The High Contrast Mode is available. |
HCF_CONFIRMHOTKEY |
A confirmation dialog appears when the the High Contrast Mode is activated by using the hot key. |
HCF_HIGHCONTRASTON |
The High Contrast Mode is on. |
HCF_HOTKEYACTIVE |
The user can turn the High Contrast Mode on and off by simultaneously pressing the left ALT, left SHIFT, and PRINT SCREEN keys. |
HCF_HOTKEYAVAILABLE |
The hot key associated with the High Contrast Mode can be enabled. An application can retrieve this value, but cannot set it. |
HCF_HOTKEYSOUND |
A siren is played when the user turns the High Contrast Mode on or off by using the hot key. |
HCF_INDICATOR |
A visual indicator is displayed when the High Contrast Mode is on. This value is not currently used and is ignored. |
An application uses this structure when calling the SystemParametersInfo function with the SPI_GETHIGHCONTRAST or SPI_SETHIGHCONTRAST value. When using SPI_GETHIGHCONTRAST, an application must specify the cbSize member of the HIGHCONTRAST structure; the SystemParametersInfo function fills the remaining members. An application must specify all structure members when using the SPI_SETHIGHCONTRAST value.
file: /Techref/os/win/api/win32/struc/src/str09_5.htm, 3KB, , updated: 2000/4/7 11:20, local time: 2024/12/11 23:21,
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