X11R7.4 - man page for xcupstorecolors (x11r4 section 3) |
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XcupStoreColors(3) X FUNCTIONS 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 colormap
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 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 Direct-
Color 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 XCupStoreColors. 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 1.0.5 XcupStoreColors(3) |
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