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CentOS 7.0 - man page for xstorenamedcolor (centos section 3)

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XStoreColors(3) 			  XLIB FUNCTIONS			  XStoreColors(3)

NAME
       XStoreColors, XStoreColor, XStoreNamedColor - set colors

SYNTAX
       int XStoreColors(Display *display, Colormap colormap, XColor color[], int ncolors);

       int XStoreColor(Display *display, Colormap colormap, XColor *color);

       int XStoreNamedColor(Display *display, Colormap colormap, char *color, unsigned long
	      pixel, int flags);

ARGUMENTS
       color	 Specifies the pixel and RGB values or the color name string (for example, red).

       color	 Specifies an array of color definition structures to be stored.

       colormap  Specifies the colormap.

       display	 Specifies the connection to the X server.

       flags	 Specifies which red, green, and blue components are set.

       ncolors	 Specifies the number of XColor structures in the color definition array.

       pixel	 Specifies the entry in the colormap.

DESCRIPTION
       The XStoreColors function changes the colormap entries of the pixel values specified in
       the pixel members of the XColor structures.  You specify which color components are to be
       changed by setting DoRed, DoGreen, and/or DoBlue in the flags member of the XColor struc-
       tures.  If the colormap is an installed map for its screen, the changes are visible imme-
       diately.  XStoreColors changes the specified pixels if they are allocated writable in the
       colormap by any client, even if one or more pixels generates an error.  If a specified
       pixel is not a valid index into the colormap, a BadValue error results.	If a specified
       pixel either is unallocated or is allocated read-only, a BadAccess error results.  If more
       than one pixel is in error, the one that gets reported is arbitrary.

       XStoreColors can generate BadAccess, BadColor, and BadValue errors.

       The XStoreColor function changes the colormap entry of the pixel value specified in the
       pixel member of the XColor structure.  You specified this value in the pixel member of the
       XColor structure.  This pixel value must be a read/write cell and a valid index into the
       colormap.  If a specified pixel is not a valid index into the colormap, a BadValue error
       results.  XStoreColor also changes the red, green, and/or blue color components.  You
       specify which color components are to be changed by setting DoRed, DoGreen, and/or DoBlue
       in the flags member of the XColor structure.  If the colormap is an installed map for its
       screen, the changes are visible immediately.

       XStoreColor can generate BadAccess, BadColor, and BadValue errors.

       The XStoreNamedColor function looks up the named color with respect to the screen associ-
       ated with the colormap and stores the result in the specified colormap.	The pixel argu-
       ment determines the entry in the colormap.  The flags argument determines which of the
       red, green, and blue components are set.  You can set this member to the bitwise inclusive
       OR of the bits DoRed, DoGreen, and DoBlue.  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.  If the specified pixel is not a valid index into the colormap, a Bad-
       Value error results.  If the specified pixel either is unallocated or is allocated read-
       only, a BadAccess error results.

       XStoreNamedColor can generate BadAccess, BadColor, BadName, and BadValue errors.

DIAGNOSTICS
       BadAccess A client attempted to free a color map entry that it did not already allocate.

       BadAccess A client attempted to store into a read-only color map entry.

       BadColor  A value for a Colormap argument does not name a defined Colormap.

       BadName	 A font or color of the specified name does not exist.

       BadValue  Some numeric value falls outside the range of values accepted by the request.
		 Unless a specific range is specified for an argument, the full range defined by
		 the argument's type is accepted.  Any argument defined as a set of alternatives
		 can generate this error.

SEE ALSO
       XAllocColor(3), XCreateColormap(3), XQueryColor(3)
       Xlib - C Language X Interface

X Version 11				   libX11 1.6.0 			  XStoreColors(3)
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