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From: oster@dewey.soe.berkeley.edu (David Phillip Oster)
Newsgroups: comp.sys.mac.programmer
Subject: Re: How do I get the slot of the main screen?
Message-ID: <32680@ucbvax.BERKELEY.EDU>
Date: 20 Nov 89 08:19:40 GMT
Sender: usenet@ucbvax.BERKELEY.EDU
Reply-To: oster@dewey.soe.berkeley.edu.UUCP (David Phillip Oster)
Organization: School of Education, UC-Berkeley
Lines: 24


In article <334@6sigma.UUCP> blm@6sigma.UUCP (Brian Matthews) writes:
>I can't figure out how to get the slot number of the main screen.

Re-read the graphic device chapter of Inside Mac Vol 5. Them write code
similar to:
	GDHandle curgd;

	if(world->hasColorQD){
		for(curgd = GetDeviceList();curgd != NIL;curgd = GetNextDevice(curgd)){
			if(TestDeviceAttribute(curgd, screenDevice) &&
				TestDeviceAttribute(curgd, screenActive) &&
				TestDeviceAttribute(curgd, mainScreen)){
					return curgd;		/* found it */
				}
			}
		}
	}
}

--- According to the Constitution, the Constitution is unconstitutional:
--- David Phillip Oster            --U.S.Constitution I.10.1: "No State shall
Arpa: oster@dewey.soe.berkeley.edu --enter into any treaty, alliance, or
Uucp: {uwvax,decvax}!ucbvax!oster%dewey.soe.berkeley.edu -- confederation..."