Specify the current foreground mix value for all primitives using GpiSetMix. To learn the current foreground mix setting, use GpiQueryMix, which returns the current foreground mix setting for a character string primitive. GpiQueryAttrs can be used to determine the current foreground and background mix values for a single primitive type.
To specify a background mix value for all primitives, use GpiSetBackMix. GpiQueryBackMix returns the current background mix value for a character-string primitive. To specify the current foreground and background mix values for a single primitive type, call GpiSetAttrs.
Note: Not all devices support all of the background and foreground mix attributes described. When a device does not support the mix attribute chosen by an application, the default mix attribute is used; no error condition is raised. DevQueryCaps can be used to determine whether a mix attribute is supported on a specific device.