Re: [gerd.moellmann@t-online.de: Re: [bab@vx.com: Scrolling down fails to refresh.]]

[jasonr@btinternet.com]

It is Windows specific, and is fixed in HEAD. The fix
that is in HEAD caused other problems in the RC branch
so it was taken out before 21.2 was released.

>  from:    Richard Stallman <rms@gnu.org>
>  date:    Thu, 05 Sep 2002 03:47:13
>  to:      emacs-devel@gnu.org
>  subject: Re: [gerd.moellmann@t-online.de: Re: [bab@vx.com: Scrolling down    fails to refresh.]]
> 
> Is this really Windows-specific?  If so, would someone who works on
> Windows please look at it?
> 
> ------- Start of forwarded message -------
> X-Authentication-Warning: gerd.free-bsd.org: gerd set sender to gerd.moellmann@t-online.de using -f
> Sender: gerd@gerd.free-bsd.org
> To: rms@gnu.org
> Subject: Re: [bab@vx.com: Scrolling down fails to refresh.]
> From: gerd.moellmann@t-online.de (Gerd Moellmann)
> Date: 04 Aug 2002 15:25:32  0200
> In-Reply-To: <200206151412.g5FECx510208@aztec.santafe.edu>
> X-Sender: 520015515780-0001@t-dialin.net
> 
> Richard Stallman <rms@gnu.org> writes:
> 
> > Would you please look at this?
> > He included a 3 meg screen capture, so I have deleted that;
> > please tell me if you want it.
> > 
> > ------- Start of forwarded message -------
> > From: "Bernard A Badger" <bab@vx.com>
> > To: <bug-gnu-emacs@gnu.org>
> > Subject: Scrolling down fails to refresh.
> > X-Priority: 3 (Normal)
> > X-MSMail-Priority: Normal
> > Importance: Normal
> > X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4807.1700
> > X-MS-TNEF-Correlator: <INEKLKBFCDBPKMKAJLMDOEKICCAA.bab@vx.com>
> > Sender: bug-gnu-emacs-admin@gnu.org
> > Date: Mon, 13 May 2002 16:47:27 -0400
> > 
> > This is a multi-part message in MIME format.
> > 
> > - ------=_NextPart_000_002D_01C1FA9D.DE765130
> > Content-Type: text/plain;
> > 	charset="iso-8859-1"
> > Content-Transfer-Encoding: 7bit
> > 
> > The following is a screen capture (Alt-Print Scrn) of Emacs as it scrolls badly
> > and does not
> > refresh properly.  
> > GNU Emacs 21.2.1 (i386-msvc-nt5.0.2195) of 2002-03-19 on buffy
> > If you cannot see the embedded picture, here's a description of the problem.
> > 
> > When I scroll down the window (Pull scrollbar down, that is) and there is a
> > "Stay on Top"
> > window overlapping the bottom of the emacs window
> > (such as Rational Purify's "Purify Instrumentation" progress window, 
> > or the Windows "Task Manager" window),  
> > the graphics of the obscuring window are copied up as we scroll.  
> > Sometimes they are erased in the end, sometimes not.
> > (I say "scroll down" when the window goes down the file, the corresponding
> > text appears to go up the screen.)
> > 
> > This can occur multiple times, until there is a "chatter" of wrongly-scrolled
> > window parts.
> > 
> > I suspect this has something to do with the incorrect scrolling that occurs
> > anyway.  
> > This is when the size of the scroll bar is re-computed based on the number of
> > characters 
> > on-screen.  It should really be based on the number of lines.  I think that in
> > the end it is, and
> > it's the temporary "approximate" scrolling that is to blame.
> 
> That looks a lot like another report for Emacs on MS-Windows, for
> which Jason said it was Windows-specific.
> ------- End of forwarded message -------
> 
> 
> 
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