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From: kennedy@synopsys.com (Sai Kennedy Vedantam)
Newsgroups: comp.windows.x.motif
Subject: autoscrolling in Text widget - how?
Keywords: Motif 1.0.3, Text Widget, Automatic scrolling
Message-ID: <590@synopsys.COM>
Date: 9 Oct 90 22:39:36 GMT
Distribution: usa
Organization: Synopsys, Inc. Mountain View, CA USA
Lines: 36

Background: Motif 1.0.3, Text widget

I recently moved from using Athena widgets to Motif and am currently 
converting my application to use Motif widget set. I basically need to 
display dynamic text (among other things) and each time new text is 
entered from below, the window should automatically scroll so that the last 
line is visible.  It was easy to do using Athena text widget because it was 
taken care of by the text widget automatically. I can not seem able to 
do it with the Motif Text widget try as I might! The widget always displays
the top n lines and NOT the bottom n lines.
Since the text I will be displaying might contain hundreds of lines, I need
an efficient solution for this.
Now, the question is:

>>> Is it a bug? If so, is there a patch/fix available?
	( we do have source license for Motif)

Note: I searched through the old News archives and found a solution based
on using XmShowTextPosition(). To use that, I need to find out what the
last n lines are going to be. This task is non trivial considering that
long lines are broken automatically into separate lines(XmNwordwrap is True) 
and I have no easy way of knowing which lines were broken and which 
were not. I want to use this only as an absolute last resort because 
of the speed considerations.

I am sure others must have come across this problem and I would prefer
a fix using some combination of toolkit calls, if possible.

Please e-mail me the solution, if this topic has already been beaten to
death.
Thanks in advance

						-Sai Vedantam
						kennedy@synopsys.com
						...sun!synopsys!kennedy
						Ph:415-962-5467