Path: utzoo!attcan!uunet!cs.utexas.edu!samsung!rex!uflorida!ziggy!screamer!packrat!hughes
From: hughes@packrat.csee.usf.edu (Ken Hughes)
Newsgroups: comp.windows.x,usf.windows.x
Subject: Using Viewport Widget in Xt
Message-ID: <106@screamer.csee.usf.edu>
Date: 24 Oct 90 23:59:30 GMT
Sender: news@screamer.csee.usf.edu
Reply-To: hughes@packrat.csee.usf.edu (Ken Hughes)
Organization: University of South Florida, College of Engineering
Lines: 21

I'm trying to write an application which scrolls a pixmap.  The X Toolkit
reference says that I need to create a widget of class viewportWidgetClass
and then create child widget of the viewport.  The scrollbars are supposed
to handle scrolling without any callback.

First, when a window resize event is called, the widget is the viewport
widget, not the pixmap widget.  What am I supposed to resize with?  If I
ignore what's being passed back and use the bitmap widget, the display is
updated correctly.

Second, when I move the scrollbars the pixmap scrolls, but the parts being
uncovered aren't there.  I assume this is related to what's happening above.

What am I doing wrong?

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Ken Hughes  (hughes@sol.csee.usf.edu) |  "Which button do I press to turn
FT-Ph D student, PT-ex-sysadm	      |   it off?"  "Try the red one,
Dept of Comp Sci and Eng	      |   allright?"  "Which red button?"
University of South Florida	      |     from _Heathers_
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