pixmap-patch
  [07-jan-92, LispView Development Group]
  New version of xview/ol_pixmap_label.o (part of the LispView
  color-label-patch), and related source files.  Fixes a problem in which a
  click on a button may cause a segmentation violation on monochrome systems.

Details:
  The original ol_pixmap_label code in the xview subdirectory of the LispView
  source release is incompatible with another fix included in the library
  xview/libolgx.sun4.a.
  The resulting problem, which appears only on monochrome displays, can be
  seen, for example, as follows: in a LispView image containing the
  color-label-patch, if the XView display is initially created by running
  the "spirals" demo, then mouse clicks on command or menu buttons (in
  spirals or other LispView windows) which would normally give responses
  will cause segmentation violations (once this happens it may not be
  possible to usefully continue the LispView session).  The problem
  may not appear if the XView display is initially created with another
  demo that includes a button.
  The problem is fixed by this new version of the pixmap patch.

Instructions for using the new version of the pixmap patch:

(1) To fix the release directory

(a) In the xview subdirectory of the LispView 1.1 source release, REPLACE
the following three files by the new versions from the present directory:
  ol_pixmap_label.c
  ol_pixmap_label.o
  olgx_impl.h

(b) Copy into the xview subdirectory the file  olgx.h  from the present
directory (the original LispView release did not have this file).

No other release files need to be changed.  Once the new  ol_pixmap_label.o
is in place, it will automatically be loaded when a new LispView image is
built with the original lispview.sbin module from the source release.

[NOTE: As mentioned in the top-level LispView build.lisp file, once LispView
is ported to OpenWindows Version 3, the color-label-patch (including these
pixmap patch files) should no longer be used.]

(2) To fix an existing LispView image (without rebuilding)

To correct a LispView image built with the original pixmap patch,
you can just load the new  ol_pixmap_label.o  into that image, as follows:
at the beginning of each LispView session (before doing anything that creates
an XView display for LispView) do:
(load-foreign-files "<appropriate-path>/ol_pixmap_label.o")

[This can be done, for example, via a Lisp initialization file.  The load will
issue some warnings about redefined and undefined foreign symbols; these can
be ignored.]