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From: resnick@cogsci.uiuc.edu (Pete Resnick)
Newsgroups: comp.sys.mac.programmer
Subject: DrvrInstall and DrvrRemove
Message-ID: <1990Nov12.062133.29315@ux1.cso.uiuc.edu>
Date: 12 Nov 90 06:21:33 GMT
Sender: news@ux1.cso.uiuc.edu (News)
Organization: University of Illinois at Urbana
Lines: 34

I was reading a draft tech note written by Mark Bennett that talked
about installing drivers at INIT time. I have a couple of questions
concerning the procedure and my particular project:

1. The tech note says that I first get an open slot in the unit table
(I figured out that part) and then do a DrvrInstall with the *pointer*
to the driver. The declaration for the routine in TN 108 says to pass
it the handle. Is the pointer just for the trap itself and the handle
is for the C or Pascal call?

2. The tech note also says that after I call DrvrInstall I should move
the handle to the driver, the DrvrFlags, DrvrDelay, etc, to the appro-
priate fields in DCE. Do I need to do this if I immediately call
OpenDriver or PBOpen?

3. Can I do this at other than INIT time?

4. If I want to close the driver and get rid of it, I assume I call
CloseDriver and then DrvrRemove. Is that right or do I only need to
call CloseDriver (or PBClose)? If I need to call DrvrRemove, TN 108
says that it calls ReleaseResource. If I have done a DetachResource,
that won't work very well. Can this be right?

5. DrvrInstall and DrvrRemove are not in MacTraps in THINK C as far
as I can tell. What do I do with the MPW glue to make this work?

Thanks for any assistance in advance,
pr
--
Pete Resnick             (...so what is a mojo, and why would one be rising?)
Graduate assistant - Philosophy Department, Gregory Hall, UIUC
System manager - Cognitive Science Group, Beckman Institute, UIUC
Internet/ARPAnet/EDUnet  : resnick@cogsci.uiuc.edu
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