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 structures.  If the colormap is an installed map
       for its screen, the changes are visible immediately.  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  associated  with  the
       colormap and stores the result in the specified colormap.  The pixel argument 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 BadValue
       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