Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!sdd.hp.com!spool.mu.edu!caen!zaphod.mps.ohio-state.edu!hobbes.physics.uiowa.edu!maverick.ksu.ksu.edu!unlinfo.unl.edu!fergvax!shores
From: shores@fergvax.unl.edu (Shores)
Newsgroups: comp.sys.mac.system
Subject: Re: ScrollBar design question
Message-ID: <shores.678054739@fergvax>
Date: 27 Jun 91 20:32:19 GMT
References: <305426.2865D1B9@cmhgate.FIDONET.ORG> <shores.677812173@fergvax> <1991Jun25.124247.11023@cbnews.cb.att.com> <54349@apple.Apple.COM>
Sender: news@unlinfo.unl.edu
Organization: University of Nebraska - Lincoln
Lines: 16
Nntp-Posting-Host: fergvax.unl.edu

In <54349@apple.Apple.COM> keith@Apple.COM (Keith Rollin) writes:
>You are correct that changing it now would cause problems. In order to
>show a proportional thumb, you have know know the size of the view
>you are scrolling, which isn't currently supported in the scrollbar
>control interface.

But you do know the size of the view most of the time.  Why couldn't the
scrollbar CDEF look at contrlMin, contrlMax, and contrlValue fields of
the control it's mangling?  I suppose that many applications are lazy
and don't update these fields as they should.  IMHO, the System 7 folks
should have added proportional thumbs while they had the chance, since
many developers are in the process of making their stuff 7.0 friendly.

   Tom... Tommy... Thomas... the Tom-ster, the Tom-boy, the Tomminator...
   ... Tom Shores, Department of Mathematics, University of Nebraska.
   ... shores@fergvax.unl.edu