Path: utzoo!mnetor!uunet!husc6!hao!ames!ucbcad!ucbvax!hplabs!pyramid!voder!apple!dgold
From: dgold@apple.UUCP (David Goldsmith)
Newsgroups: comp.sys.mac
Subject: Re: MultiFInder+MultiVideo+MultiMachine
Message-ID: <7165@apple.UUCP>
Date: 11 Jan 88 19:04:25 GMT
References: <22366@ucbvax.BERKELEY.EDU> <22367@ucbvax.BERKELEY.EDU> <7138@apple.UUCP> <22461@ucbvax.BERKELEY.EDU>
Reply-To: dgold@apple.UUCP (David Goldsmith)
Organization: Apple Computer Inc., Cupertino, USA
Lines: 30

In article <22461@ucbvax.BERKELEY.EDU> oster@dewey.soe.berkeley.edu.UUCP (David Phillip Oster) writes:
>
>>if (((**gd).gdFlags & (1<<screenDevice)) &&
>>	(((**gd).gdFlags) & (1<<screenActive))) {
>>	... whatever you want ...
>>}
>
>Now I'm confused. David Goldsmith is quite right, Stew Rubenstein also
>pointed this out, but on the same page of Inside Mac Vol5. where
>GetDeviceList() and GetNextDevice() are described is the call:
>
>TestDeviceAttribute()
>
>which is an easy and clean way of testing the gdflags. Surely, it is
>better to use the call than testing the bits directly.

Quite right.  That should have been:

if (TestDeviceAttribute(gd, screenDevice) &&
	TestDeviceAttribute(gd, screenActive))

Thanks.
-- 
David Goldsmith
Apple Computer, Inc.

AppleLink: GOLDSMITH1
UUCP:  {nsc,dual,sun,voder,ucbvax!mtxinu}!apple!dgold
CSNET: dgold@apple.CSNET, dgold%apple@CSNET-RELAY
BIX: dgoldsmith