XcupStoreColors(3) X FUNCTIONS XcupStoreColors(3)
NAME
XcupStoreColors - initialize shareable colormap entries at specific lo-
cations
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 en-
tries are allocated as if an AllocColor has been used instead, i.e. the
colors are read-only (shareable). XcupStoreColors returns the number
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 1.3.4 XcupStoreColors(3)
Generated by dwww version 1.14 on Mon Feb 3 07:47:48 CET 2025.