XcupStoreColors(3)

NAME

       XcupStoreColors  -  initialize  shareable  colormap entries at specific
       locations

SYNOPSIS

       cc [ flag ... ] file ... -lXext [ library ... ]
       #include <X11/extensions/Xcup.h>

       Status XcupStoreColors(Display *display, Colormap colormap,
              XColor *colors_in_out, int ncolors);

ARGUMENTS

       display   Specifies the connection to the X server

       colormap  Specifies the colormap

       colors_in_out
                 Specifies and returns the values actually used  in  the  col-
                 ormap

       ncolors   Specifies the number of items in colors_in_out

DESCRIPTION

       The  XcupStoreColors function changes the colormap entries of the pixel
       values in the pixel members of  the  XColor  structures.  The  colormap
       entries  are  allocated as if an AllocColor has been used instead, i.e.
       the colors are read-only (shareable).  XcupStoreColors returns the num-
       ber of colors that were successfully allocated in the colormap.

       A  Value  error  is  generated if a pixel is not a valid index into the
       colormap. A BadMatch error is generated if the colormap does not belong
       to a GrayScale, PseudoColor, or DirectColor visual.

       Applications which allocate many colors in a screen's default colormap,
       e.g.  a color-cube or a gray-ramp, should allocate them with XCupStore-
       Colors.  By using XCupStoreColors the colors will be allocated sharable
       (read-only) and any other application which allocates  the  same  color
       will share that color cell.

SEE ALSO

       XcupQueryVersion(3Xext), XcupGetReservedColormapEntries(3Xext),
       Colormap Utilization Policy and Extension

X Version 11                     libXext 1.0.3              XcupStoreColors(3)