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HIGHCONTRAST info  Overview  Group

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; 

 

Members

cbSize
Specifies the size, in bytes, of this structure.
dwFlags
Specifies a combination of the following values:

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.

lpszDefaultScheme
Points to a string that contains the name of the default color scheme.

Remarks

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.

See Also

SystemParametersInfo 


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