Path: utzoo!utgpu!cunews!bnrgate!brchh104!brchs1!bnr.ca!rice.edu!sun-spots-request
From: jms@tardis.tymnet.com (Joe Smith)
Newsgroups: comp.sys.sun
Subject: How can I disable Sunview Cmdtool scrolling from C program
Keywords: Windows
Message-ID: <2613@brchh104.bnr.ca>
Date: 24 Apr 91 00:00:00 GMT
Sender: news@brchh104.bnr.ca
Organization: Sun-Spots
Lines: 44
Approved: Sun-Spots@rice.edu
X-Original-Date: Sun, 21 Apr 91 02:50:12 PDT
X-Sun-Spots-Digest: Volume 10, Issue 88, message 10
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In article <1991Apr18.205638.1769@wrkgrp.COM> jmd@wrkgrp.COM (Joseph M DeAngelo) writes:
>I had asked an earlier question about why I was getting repeated
>SIGWINCH signals while running a curses application in a Sunview
>cmdtool window.  I noticed that the problem disappears if I
>first disable scrolling.  Is there any way to disable scrolling
>( that is, make the scroll bar disappear) from a C program??

The answer to your question is "output the appropriate escape sequence".

Here are the relevant lines from my .cshrc file:
  alias header 'echo'	  # this is redefined in .suncmd
  alias cd 'cd \!*; header ${HOST}:${cwd}; set cwdh=$cwd:h; set prompt="($cwdh:t/$cwd:t) $userprompt"'
  # windows do not execute .login, so must do some of it here
  if ($?WINDOW_PARENT) then
	source ~/.suncmd  # define header, scroll{off,on} using escape sequences
	#  I like non-scrolling cmdtool windows; they have a nicer left margin.
	if ($term == sun-cmd && `tty` != /dev/ttyp0) then
		scrolloff; tset sun	# ttyp0 is the console window
	endif
	cd $cwd		  # This sets the new prompt
  endif

Here is the .suncmd file:  (Note: \E signifies the ESCape character)
  # These definitions are here in .suncmd so that "cat .cshrc" and "cat .login"
  # won't cause the terminal to get confused by the escape sequences.
  alias scrollon  'echo -n "\E[>4h"'	# enables scroll bar on cmdtool window
  alias scrolloff 'echo -n "\E[>4l"'	# disables scroll bar
  if (`tty` == /dev/ttyp0 && $?WINDOW_PARENT) then
  	alias header	'echo'		# kludge for my console window
  else
  	alias header    'echo -n "\E]l\!*\E\"'	# change title bar
  endif
  alias iconheader	'echo -n "\E]L\!*\E\"'	# change icon label

In summary: To make a cmdtool window act like a shelltool window, output
the sequence "escape open-square-bracket greater-than four lowercase-H".
To re-enable scrolling, use "lowercase-L" instead.  For more info, see the
man pages on "shelltool".

Joe Smith (408)922-6220 | SMTP: jms@tardis.tymnet.com or jms@gemini.tymnet.com
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