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<HTML><HEAD><TITLE>Xlib Programming Manual: XcmsLookupColor</TITLE></HEAD><BODY><H1 ALIGN=center>XcmsLookupColor</H1><H2>Syntax</H2><!.IN "Color" "naming"><!.IN "XcmsLookupColor" "" "@DEF@"><CODE><PRE><B><A HREF="conversion-contexts-and-gamut-mapping.html#cmsStatus">Status</A></B> XcmsLookupColor(<B>display</B>, <B>colormap</B>, <B>color_string</B>, <B>color_exact_return</B>, <B>color_screen_return</B>, <B>result_format</B>) <A HREF="../display/opening.html#Display">Display</A> *<B>display</B>; <A HREF="./#colormap">Colormap</A> <B>colormap</B>; char *<B>color_string</B>; <A HREF="structures.html#XcmsColor">XcmsColor</A> *<B>color_exact_return</B>, *<B>color_screen_return</B>; <A HREF="structures.html#XcmsColor">XcmsColorFormat</A> <B>result_format</B>;</PRE></CODE><H2>Arguments</H2><TABLE><TR><TD> <B>display</B><TD> Specifies the connection to the X server.<TR><TD> <B>colormap</B><TD> Specifies the colormap.<TR><TD> <B>color_string</B><TD> Specifies the color string.<TR><TD> <B>color_exact_return</B><TD> Returns the color specification parsed from the color stringor parsed from the corresponding string found in a color name database.<TR><TD> <B>color_screen_return</B><TD> Returns the color that can be reproduced on the screen.<TR><TD> <B>result_format</B><TD> Specifies the color format for the returned colorspecifications (color_screen_return and color_exact_return arguments).If the format is<B>XcmsUndefinedFormat</B>and the color string contains anumerical color specification,the specification is returned in the format used in that numericalcolor specification.If the format is<B>XcmsUndefinedFormat</B>and the color string contains a color name,the specification is returned in the format used to store the color in the database.</TABLE><H2>Description</H2>The<B>XcmsLookupColor()</B>function looks up the string name of a color with respect to the screenassociated with the specified colormap.It returns both the exact color values andthe closest values provided by the screen with respect to the visual type of the specified colormap.The values are returned in the format specified by result_format.If the color name is not in the Host Portable Character Encoding, the result is implementation dependent.Use of uppercase or lowercase does not matter.<B>XcmsLookupColor()</B>returns<B>XcmsSuccess</B>or<B>XcmsSuccessWithCompression</B>if the name is resolved; otherwise, it returns<B>XcmsFailure</B>.If<B>XcmsSuccessWithCompression</B>is returned, the color specification returned in color_screen_return is the result of gamut compression.<H2>See also</H2><B><A HREF="XcmsAllocColor.html">XcmsAllocColor()</A></B>,<B><A HREF="XcmsQueryColor.html">XcmsQueryColor()</A></B>,<B><A HREF="XcmsQueryColors.html">XcmsQueryColors()</A></B>,<B><A HREF="XcmsStoreColor.html">XcmsStoreColor()</A></B>,<B><A HREF="XQueryColor.html">XQueryColor()</A></B>,"<A HREF="mapping-names-to-values.html">Mapping Color Names to Values</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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