Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!mcsun!sunic!tut!santra!kampi.hut.fi!jmunkki
From: jmunkki@kampi.hut.fi (Juri Munkki)
Newsgroups: comp.sys.mac.programmer
Subject: Re: How to get video card slot numbers?
Message-ID: <1989Dec22.224758.14483@santra.uucp>
Date: 22 Dec 89 22:47:58 GMT
References: <1989Dec22.183916.9197@santra.uucp>
Sender: news@santra.uucp (Cnews - USENET news system)
Reply-To: jmunkki@kampi.hut.fi (Juri Munkki)
Organization: Helsinki University of Technology, Finland
Lines: 20

As usual, I figured out the problem before anyone had time to respond.
This time the solution was simple, but finding it wasn't. If I knew
the Macintosh device manager better, I might have found it sooner.

Here's a way to find the slot number of the main GDevice:

	GDHandle	MainDisplay;
	AuxDCEHandle	DisplayDriver;

	MainDisplay=GetMainDevice();
	DisplayDriver=(void *)GetDCtlEntry((*MainDisplay)->gdRefNum);
	Vv.theslot=(*DisplayDriver)->dCtlSlot;

It's simple now that I know how to do it. I use this to install a real
VBL task for the sega glasses demo software.

_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
|     Juri Munkki jmunkki@hut.fi  jmunkki@fingate.bitnet        I Want   Ne   |
|     Helsinki University of Technology Computing Centre        My Own   XT   |
^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^