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Status XcmsSetWhitePoint(ccc, color)
XcmsCCC ccc;
XcmsColor *color;
XcmsWhiteAdjustProc XcmsSetWhiteAdjustProc(ccc, white_adjust_proc,
client_data)
XcmsCCC ccc;
XcmsWhiteAdjustProc white_adjust_proc;
XPointer client_data;
pixel member is ignored
and that the color specification is left unchanged upon return.
The format for the new white point must be
XcmsCIEXYZFormat, XcmsCIEuvYFormat,
XcmsCIExyYFormat, or XcmsUndefinedFormat.
If color is NULL, this function sets the format
component of the Client White Point specification to
XcmsUndefinedFormat,
indicating that the Client White Point is assumed
to be the same as the Screen White Point.
The XcmsSetWhiteAdjustProc function first sets the white point adjustment procedure and client data in the specified CCC with the newly specified procedure and client data and then returns the old procedure.