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XmGetPixmap(3X)
OSF/Motif
NAME
XmGetPixmap - A pixmap caching function that generates a pixmap, stores it
in a pixmap cache, and returns the pixmap
SYNOPSIS
#include <Xm/Xm.h>
Pixmap XmGetPixmap (screen, image_name, foreground, background)
Screen *screen;
char *image_name;
Pixel foreground;
Pixel background;
DESCRIPTION
XmGetPixmap uses the parameter data to perform a lookup in the pixmap cache
to see if a pixmap has already been generated that matches the data. If
one is found, a reference count is incremented and the pixmap is returned.
Applications should use XmDestroyPixmap when the pixmap is no longer
needed.
If a pixmap is not found, image_name is used to perform a lookup in the
image cache. If an image is found, it is used to generate the pixmap,
which is then cached and returned.
If an image is not found, the image_name is used as a filename, and a
search is made for an X10 or X11 bitmap file. If it is found, the file is
read, converted into an image, and cached in the image cache. The image is
then used to generate a pixmap, which is cached and returned.
If image_name has a leading slash (/), it specifies a full pathname, and
XmGetPixmap opens the file as specified. Otherwise, image_name specifies a
filename. In this case XmGetPixmap looks for the file along a search path
specified by the XBMLANGPATH environment variable or by a default search
path, which varies depending on whether or not the XAPPLRESDIR environment
variable is set.
The XBMLANGPATH environment variable specifies a search path for X bitmap
files. It can contain the substitution field %B, where the image_name
argument to XmGetPixmap is substituted for %B. It can also contain the
substitution fields accepted by XtResolvePathname. The substitution field
%T is always mapped to bitmaps, and %S is always mapped to NULL.
If XBMLANGPATH is not set but the environment variable XAPPLRESDIR is set,
the following pathnames are searched:
%B
$XAPPLRESDIR/%L/bitmaps/%N/%B
$XAPPLRESDIR/%l/bitmaps/%N/%B
$XAPPLRESDIR/bitmaps/%N/%B
$XAPPLRESDIR/%L/bitmaps/%B
$XAPPLRESDIR/%l/bitmaps/%B
$XAPPLRESDIR/bitmaps/%B
$HOME/bitmaps/%B
$HOME/%B
/usr/lib/X11/%L/bitmaps/%N/%B
/usr/lib/X11/%l/bitmaps/%N/%B
/usr/lib/X11/bitmaps/%N/%B
/usr/lib/X11/%L/bitmaps/%B
/usr/lib/X11/%l/bitmaps/%B
/usr/lib/X11/bitmaps/%B
/usr/include/X11/bitmaps/%B
If neither XBMLANGPATH nor XAPPLRESDIR is set, the following pathnames are
searched:
%B
$HOME/%L/bitmaps/%N/%B
$HOME/%l/bitmaps/%N/%B
$HOME/bitmaps/%N/%B
$HOME/%L/bitmaps/%B
$HOME/%l/bitmaps/%B
$HOME/bitmaps/%B
$HOME/%B
/usr/lib/X11/%L/bitmaps/%N/%B
/usr/lib/X11/%l/bitmaps/%N/%B
/usr/lib/X11/bitmaps/%N/%B
/usr/lib/X11/%L/bitmaps/%B
/usr/lib/X11/%l/bitmaps/%B
/usr/lib/X11/bitmaps/%B
/usr/include/X11/bitmaps/%B
These paths are defaults that vendors may change. For example, a vendor may
use different directories for /usr/lib/X11 and /usr/include/X11.
The following substitutions are used in these paths:
%B The image name, from the image_name argument.
%N The class name of the application.
%L The display's language string.
%l The language component of the display's language string.
Parameter descriptions are listed below:
screen
Specifies the display screen on which the pixmap is to be drawn. The
depth of the pixmap is the default depth for this screen.
image_name
Specifies the name of the image to be used to generate the pixmap
foreground
Combines the image with the foreground color to create the pixmap if
the image referenced is a bit-per-pixel image
background
Combines the image with the background color to create the pixmap if
the image referenced is a bit-per-pixel image
RETURN VALUE
Returns a pixmap when successful; returns XmUNSPECIFIED_PIXMAP if the image
corresponding to the image_name cannot be found.
SEE ALSO
XmDestroyPixmap(3X), XmGetPixmapByDepth(3X), XmInstallImage(3X),
XmUninstallImage(3X)
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