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<HTML><HEAD><TITLE>Xlib Programming Manual: XcmsSetWhitePoint</TITLE></HEAD><BODY><H1 ALIGN=center>XcmsSetWhitePoint</H1><H2>Syntax</H2><!.IN "XcmsSetWhitePoint" "" "@DEF@"><!.IN "Client White Point" "of Color Conversion Context"><CODE><PRE><B><A HREF="../conversion-contexts-and-gamut-mapping.html#cmsStatus">Status</A></B> XcmsSetWhitePoint(<B>ccc</B>, <B>color</B>) <A HREF="macros.html">XcmsCCC</A> <B>ccc</B>; <A HREF="../structures.html#XcmsColor">XcmsColor</A> *<B>color</B>;</PRE></CODE><H2>Arguments</H2><TABLE><TR><TD> <B>ccc</B><TD> Specifies the CCC.<TR><TD> <B>color</B><TD> Specifies the new Client White Point.</TABLE><H2>Description</H2>The<B><A HREF="XcmsSetWhitePoint.html">XcmsSetWhitePoint()</A></B>function changes the Client White Point in the specified <A HREF="../conversion-contexts-and-gamut-mapping.html">CCC</A>.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<B><A HREF="../structures.html#XcmsRGBFormat">XcmsCIEXYZFormat</A></B>,<B><A HREF="../structures.html#XcmsRGBFormat">XcmsCIEuvYFormat</A></B>,<B><A HREF="../structures.html#XcmsRGBFormat">XcmsCIExyYFormat</A></B>,or<B><A HREF="../structures.html#XcmsUndefinedFormat">XcmsUndefinedFormat</A></B>.If the color argument is NULL, this function sets the format component of theClient White Point specification to<B><A HREF="../structures.html#XcmsUndefinedFormat">XcmsUndefinedFormat</A></B>,indicating that the Client White Point is assumed to be the same as theScreen White Point.<P>This function returns nonzero statusif the format for the new white point is valid;otherwise, it returns zero.<H2>See also</H2><B><A HREF="macros.html#DisplayOfCCC">DisplayOfCCC()</A></B>,<B><A HREF="XcmsCCCOfColormap.html">XcmsCCCOfColormap()</A></B>,<B><A HREF="../XcmsConvertColors.html">XcmsConvertColors()</A></B>,<B><A HREF="XcmsCreateCCC.html">XcmsCreateCCC()</A></B>,<B><A HREF="XcmsDefaultCCC.html">XcmsDefaultCCC()</A></B>,"<A HREF="modifying-attributes.html">Modifying Attributes of a Color Conversion Context</A>".<HR><ADDRESS><A HREF="http://tronche.com/">Christophe Tronche</A>, <A HREF="mailto:ch.tronche@computer.org">ch.tronche@computer.org</A></ADDRESS></BODY></HTML>⌨️ 快捷键说明
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