XcupStoreColors.man   [plain text]

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.ie t \fB\^\\$1\^\fR\\$2
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..
.TH XcupStoreColors __libmansuffix__ __xorgversion__ "X FUNCTIONS"
.SH NAME
XcupStoreColors \- initialize shareable colormap entries at specific locations
.SH SYNOPSIS
.PP
.nf
\fBcc\fR [ \fIflag\fR \&.\&.\&. ] \fIfile\fR \&.\&.\&. -\fBlXext\fR [ \fIlibrary\fR \&.\&.\&. ]
\&#include <X11/extensions/Xcup.h>
.HP
Status \fBXcupStoreColors\fP\^(\^Display *\fIdisplay\fP\^, Colormap \fIcolormap\fP\^,
XColor *\fIcolors_in_out\fP\^, int \fIncolors\fP\^);
.if n .ti +5n
.if t .ti +.5i
.SH ARGUMENTS
.IP \fIdisplay\fP 1i
Specifies the connection to the X server
.IP \fIcolormap\fP 1i
Specifies the colormap
.IP \fIcolors_in_out\fP 1i
Specifies and returns the values actually used in the colormap
.IP \fIncolors\fP 1i
Specifies the number of items in colors_in_out
.SH DESCRIPTION
.LP
The 
.ZN 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).
.ZN XcupStoreColors 
returns the number of colors that were successfully allocated in the colormap.
.LP
A 
.ZN Value 
error is generated if a pixel is not a valid index into the colormap. A
.ZN BadMatch 
error is generated if the colormap does not belong to a GrayScale,
PseudoColor, or DirectColor visual.
.LP
Applications which allocate many colors in a screen's default colormap, e.g.
a color-cube or a gray-ramp, should allocate them with 
.ZN 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.
.SH "SEE ALSO"
.BR XcupQueryVersion (3Xext),
.BR XcupGetReservedColormapEntries (3Xext),
.br
\fIColormap Utilization Policy and Extension\fP