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From: jmunkki@hila.hut.fi (Juri Munkki)
Newsgroups: comp.sys.mac.programmer
Subject: Re: VBL tasks
Message-ID: <1991May13.141018.16539@santra.uucp>
Date: 13 May 91 14:10:18 GMT
References: <1991May13.014725.5238@neon.Stanford.EDU>
Sender: news@santra.uucp (Cnews - USENET news system)
Reply-To: jmunkki@hila.hut.fi (Juri Munkki)
Organization: Helsinki University of Technology, FINLAND
Lines: 17

In article <1991May13.014725.5238@neon.Stanford.EDU> cheshire@neon.Stanford.EDU (Stuart David Cheshire) writes:
>Does anybody know how to stop Multifinder turning off my VBL task when my
>application is switched to the background?
>
>I tried doing as they say and installing the vbl task in the system heap
>which is supposed to stop this, but it doesn't seem to work:

You got it almost right. The task procedure has to be in the system heap,
the queue entry can be anywhere.

I use a resource with the system heap bit set and a single JMP instruction
that I patch to point to my code in the application.

   ____________________________________________________________________________
  / Juri Munkki	    /  Helsinki University of Technology   /  Wind  / Project /
 / jmunkki@hut.fi  /  Computing Center Macintosh Support  /  Surf  /  STORM  /
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