XmGetPixmapByDepth(3X)XmGetPixmapByDepth(3X)NAMEXmGetPixmapByDepth - 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;
DESCRIPTIONXmGetPixmapByDepth 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 gener‐
ate 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 environ‐
ment 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 bit‐
map 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: The image name,
from the image_name argument The class name of the application The dis‐
play's language string The language component of the display's language
string
Parameter descriptions are listed below: Specifies the display screen
on which the pixmap is to be drawn Specifies the name of the image to
be used to generate the pixmap Combines the image with the foreground
color to create the pixmap if the image referenced is a bit-per-pixel
image Combines the image with the background color to create the pixmap
if the image referenced is a bit-per-pixel image 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 ALSOXmDestroyPixmap(3X), XmInstallImage(3X), XmUninstallImage(3X)XmGetPixmapByDepth(3X)
