Scrollbar fix for color_xterm with Slackware 2.0.


WARNING: Use this at your own risk.  I admit now than I'm
not an experienced C and X windows programmer (just an
ordinary user who prefers to get binary distributions),
but this is my simple fix to what has been a somewhat
annoying problem which others have asked about as well,
and received no answers.  This fix seems to work on my
system, which is Slackware 2.0, kernel 1.1.44, and
libXaw3d installed as described in its documentation.


After installing Slackware 2.0, I noticed that the scrollbar
in color_xterm didn't quite work correctly.  It seems to have
worked when I had Slackware 1.1.1 (kernel 0.99pl14).  In
particular, the scrollbar just blinks on and off and doesn't
change size properly as lines are added the buffer, but 
using the scrollbar seems to work.  After installing the
very nice 3D Athena Widget replacement by Joachim Schnitter, 
the problem remained, though the scrollbar didn't quite
work properly in addition to not displaying properly.

BTW: The libXaw3d library adds a nice 3D look to existing
programs which use the libXaw library.  All you have to
do is install it as described.  Nothing needs to be built
or recompiled.  Programs affected include xterm, color_xterm,
xload, xclock, seyon, and many others.  The package is
available as sunsite.unc.edu in /pub/Linux/libs/X.

Well, after playing with the source, it didn't take long to
find that all sorts of things intended for BSD were being
defined (around about line 120 in main.c).  I removed a 
couple of offending lines, and it compiled with a couple
warnings, but still the same problems with the scrollbar.
Rather than fixing it in an elegant way, I just tried deleted
all the stuff for systems that aren't POSIX.  The original
warnings appeared again, but new binary was about 30k smaller
and the scrollbar seems to work!  (ok, I'm no C expert)

The original main.c file was copied to main.c_orig.  The
original Makefiles also have "_orig" on the end, since
I had to make new ones with xmkmf.

HOW TO INSTALL to fix the problem on your system?

Well, you could try (as root) changing into the "xterm"
directory created by this tar file, and typing:

      mv /usr/X11/bin/color_xterm /usr/X11/bin/color_xterm_orig
      mv ./color_xterm /usr/X11/bin/color_xterm

and if it doesn't work, just undo with

      mv /usr/X11/bin/color_xterm_orig /usr/X11/bin/color_xterm


But ideally, you might be an experienced X programmer and
actually determine what the problem really was (and e-mail
me, please), make an elegant fix, and upload a copy to
various ftp sites and send to Patrick for future releases
of the Slackware distribution.


I hope you find this fix useful, and hopefully someone
more knowledgable than me will redo it someday.

Paul Stoffregen (paul@ece.orst.edu)