Path: utzoo!attcan!uunet!mcvax!unido!laura!exunido!lange
From: lange@exunido.uucp (Rainer Lange)
Newsgroups: comp.windows.x
Subject: Problems: viewports and scrolling
Message-ID: <778@laura.UUCP>
Date: 12 Dec 88 12:19:20 GMT
References: <600@metasoft.UUCP> <8812081720.AA02419@LYRE.MIT.EDU>
Sender: root@laura.UUCP
Reply-To: lange@exunido.UUCP (Rainer Lange)
Organization: University of Dortmund, W-Germany
Lines: 14


Hi Xperts,
we 've got a problem concerning viewport-widgets.
We installed a simple widget as the child of a viewport
in order to use the viewports capabilities of scrolling.
Using Xlib-functions we draw some stuff into the window
of the simple widget. Up to this point R3 operates fine
(as Xpected). 

Any movement of the viewports scrollbars actually scrolls
the contents of the simple widget, but scrolling back does
no update of the former invisible (since scrolled) contents.

Any suggestions ?          Thanx in advance Lutz & Rainer