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XmGetPixmapByDepth(3X)
OSF/Motif
NAME
XmGetPixmapByDepth - A pixmap caching function that generates a pixmap,
stores it in a pixmap cache, and returns the pixmap
SYNOPSIS
#include <Xm/Xm.h>
Pixmap XmGetPixmapByDepth (screen, image_name, foreground, background,
depth)
Screen *screen;
char *image_name;
Pixel foreground;
Pixel background;
int depth;
DESCRIPTION
XmGetPixmapByDepth 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 matching 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, 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
XmGetPixmapByDepth opens the file as specified. Otherwise, image_name
specifies a filename. In this case XmGetPixmapByDepth 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 XmGetPixmapByDepth 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
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
depth
Specifies the depth of the pixmap
RETURN VALUE
Returns a pixmap when successful; returns XmUNSPECIFIED_PIXMAP if the image
corresponding to image_name cannot be found.
SEE ALSO
XmDestroyPixmap(3X), XmInstallImage(3X), XmUninstallImage(3X)
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