Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!samsung!caen!hertlein@mich.physics.lsa.umich.edu
From: hertlein@mich.physics.lsa.umich.edu (Marc Hertlein)
Newsgroups: comp.sys.mac.programmer
Subject: TCL CScrollBar question (beginner)
Message-ID: <2Z#-KHM@engin.umich.edu>
Date: 6 Jun 91 01:18:49 GMT
Distribution: World
Organization: Univ. of Michigan
Lines: 16

I am trying to write a THINK C program (with TCL) using simple scrollbars.

Basically I have a window with a pane, which contains another pane
and some scroll bars.
Everything works as it should, but when I try to drag the thumb in the
bars, the thumb outline is not drawn while dragging. Upon releasing the
mouse button, the thumb jumps to where I released it though.
However, as soon as I draw something in the inner subpane, the scroll bars
work correctly, i.e. with thumb outline dragging. I noticed that the bars
work right as soon as I call PenNormal(). If my window gets deactivated
under Multifinder, I'm back to the old problem.
Am I forgetting to initialize some part of the scrollbar? I tried to look
into other programs, which work fine, but I don't know what I'm doing wrong.

Thanks for any help.
                                           - Marc Hertlein