Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!gem.mps.ohio-state.edu!uakari.primate.wisc.edu!uwm.edu!dogie.macc.wisc.edu!schaefer!uhura!qureshi
From: qureshi@uhura.cs.wisc.edu (Mohammad Qureshi)
Newsgroups: comp.sys.mac.programmer
Subject: VBL or patch traps?
Message-ID: <189@uhura.cs.wisc.edu>
Date: 15 Oct 89 17:47:31 GMT
Reply-To: qureshi@uhura (Mohammad Qureshi)
Distribution: usa
Organization: Undergraduate Projects Laboratory, University of Wisc. - Madison
Lines: 11

I have been considering writing an INIT that would, after a set time, present
a dialog to the user.  This would be a sort of alarm which the user would
be able to set (using a cdev interface).  My question is, should I implement
this alarm as a VBL task, checking each time if one of the alarm times has
been reached, or should I patch WaitNextEvent/GetNextEvent and/or appropriate
traps to check whether or not the alarm should go off?

I know I could implement it as a driver and the wait time can be set this way,
but I really don't think that that is my answer.

Any assistance will be greatly appreciated.