Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bloom-beacon!mit-eddie!uw-beaver!tektronix!decvax!savax!elrond!anson
From: anson@elrond.CalComp.COM (Ed Anson)
Newsgroups: comp.sys.mac.programmer
Subject: Re: WaitNextEvent problem
Keywords: WaitNextEvent MultiFinder background
Message-ID: <2460@elrond.CalComp.COM>
Date: 18 Oct 88 15:03:28 GMT
References: <159@s1.sys.uea.ac.uk>
Reply-To: anson@elrond.UUCP ()
Organization: Calcomp Display Products Division, Hudson, NH, USA
Lines: 20

In article <159@s1.sys.uea.ac.uk> jrk@s1.sys.uea.ac.uk (Richard Kennaway CMP RA) writes:
>
>I'm having a problem with WaitNextEvent in a background application.  
>
>The problem is that switching between BackgroundClock and other applications 
>or DAs usually hangs the system when I switch back to BackgroundClock.
>
>Here's some pieces of the code.  I only update the time once a second, so
>to be friendly to applications, I call WNE with a 60-tick delay, in a loop

Consult Tech Note #177. There is a bug in old versions of MultiFinder (such
as you are using) which requires the delay to be 50 or less.

Try reducing your delay.

I hope this helps.
-- 
=====================================================================
   Ed Anson,    Calcomp Display Products Division,    Hudson NH 03051
   (603) 885-8712,      anson@elrond.CalComp.COM