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XcmsSetWhitePoint, XcmsSetWhiteAdjustProc
- modifying CCC attributes 
- Status XcmsSetWhitePoint(XcmsCCC ccc, XcmsColor
*color);  
- XcmsWhiteAdjustProc XcmsSetWhiteAdjustProc(XcmsCCC ccc, 
- XcmsWhiteAdjustProc
white_adjust_proc, XPointer client_data);  
- ccc
- Specifies the CCC.
- client_data
- Specifies client data for the white point adjustment procedure
or NULL. 
- color
- Specifies the new Client White Point. 
- white_adjust_proc
- Specifies
the white point adjustment procedure. 
The XcmsSetWhitePoint 
 function changes the Client White Point in the specified CCC. Note that
the 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 the
color argument 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.
This function returns nonzero status if the format for the new white point
is valid; otherwise, it returns zero. 
 
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. 
DisplayOfCCC(3X11)
, XcmsCCCOfColormap(3X11)
,
XcmsConvertColors(3X11)
, XcmsCreateCCC(3X11)
, XcmsDefaultCCC(3X11)
 
Xlib - C Language X Interface 
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