📄 xcmssetcompressionproc.html
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<HTML><HEAD><TITLE>Xlib Programming Manual: XcmsSetCompressionProc</TITLE></HEAD><BODY><H1 ALIGN=center>XcmsSetCompressionProc</H1><H2>Syntax</H2><!.IN "XcmsSetCompressionProc" "" "@DEF@"><!.IN "Gamut compression" "setting in Color Conversion Context"><!.IN "Gamut compression" "procedure"><!.IN "Gamut compression" "client data"><CODE><PRE>XcmsCompressionProc XcmsSetCompressionProc(<B>ccc</B>, <B>compression_proc</B>, <B>client_data</B>) <A HREF="macros.html">XcmsCCC</A> <B>ccc</B>; XcmsCompressionProc <B>compression_proc</B>; XPointer <B>client_data</B>;</PRE></CODE><H2>Arguments</H2><TABLE><TR><TD> <B>ccc</B><TD> Specifies the <A HREF="../conversion-contexts-and-gamut-mapping.html">CCC</A>.<TR><TD> <B>compression_proc</B><TD> Specifies the gamut compression procedure that is to be applied when a color lies outside the screen's color gamut.If NULL is specified and a function using this <A HREF="../conversion-contexts-and-gamut-mapping.html">CCC</A> must converta color specification to a device-dependent format and encounters a colorthat lies outside the screen's color gamut, that function will return<B><A HREF="../conversion-contexts-and-gamut-mapping.html#cmsStatus">XcmsFailure</A></B> .<TR><TD> <B>client_data</B><TD> Specifies client data for the gamut compression procedure or NULL.</TABLE><H2>Description</H2>The<B>XcmsSetCompressionProc()</B>function first sets the gamut compression procedure and client data in the specified CCC with the newly specified procedure and client dataand then returns the old procedure.<H2>See also</H2>"<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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