Contains information about the high contrast accessibility feature.This feature 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.
The user can turn the high contrast feature on and off by simultaneously pressing the left ALT, left SHIFT, and PRINT SCREEN keys.
A confirmation dialog appears when the high contrast feature is activated by using the hot key.
A siren is played when the user turns the high contrast feature on or off by using the hot key.
A visual indicator is displayed when the high contrast feature is on. This value is not currently used and is ignored.
The hot key associated with the high contrast feature can be enabled. An application can retrieve this value, but cannot set it.
No flag name supported
Passing HIGHCONTRASTSTRUCTURE in calls to the SystemParametersInfoA function can cause theme change effects even if the theme isn't being changed. For example, the WM_THEMECHANGED message is sent to Windows even if the only change is to HCF_HOTKEYSOUND.
To prevent this, include this flag value in the call to SystemParametersInfo.
This flag should not be used when toggling the high contrast mode (HCF_HIGHCONTRASTON).
Points to a string that contains the name of the color scheme that will be set to the default scheme.
An application uses this structure when calling theSystemParametersInfoA 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.