Newsgroups: comp.sys.atari.st
Path: utzoo!utgpu!cunews!bnrgate!bwdls56!fortinp
From: fortinp@bwdls56.bnr.ca (Pierre Fortin)
Subject: GEM bug? (was: Re: Tos 1.4 bug?)
Message-ID: <1990Oct18.001638.28515@bnrgate.bnr.ca>
Sender: news@bnrgate.bnr.ca (USENET News System)
Organization: Bell-Northern Research, Ltd. Ottawa Ontario CANADA
Date: Thu, 18 Oct 90 00:16:38 GMT

I'm running TOS1.4.  Something really strange happened last night...

Here's the sequence:
  - under NeoDesk 2.05 I had two file widows open
  - ran msh.prg (MWC)
  - exited
  - moved mouse to "NEODESK" (accessory dropdown) before the two file 
    windows were redrawn
  - got the outline of the first window
  - the dropdown appeared
  - the 2nd window appeared
  - the first window filled in, overwriting the dropdown with which it 
    overlapped
Things happened so fast that I don't recall any more details, but the file
window and dropdown were a little confused until I clicked the mouse (I 
think this is where it ended).  I was unable to reproduce it at will, but 
if it happened once...?
Seems symptomatic of code which does not prevent interrupts (like mouse asking
for a dropdown) during a critical few instructions (like between drawing the
outline and filling it).  Just a WAG (wild-assed guess), but....?

Ciao,
Pierre
Pierre Fortin       Bell-Northern Research     I know, my postings are
Internet Systems    P.O.Box 3511, Stn C        terse and humourless. So?
(613)763-2598       Ottawa, Ontario            RIP: aptly named protocol
fortinp@bnr.ca      Canada    K1Y 4H7          AppleTalk: Adam&Eve's design