Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!hoptoad!tim
From: tim@hoptoad.uucp (Tim Maroney)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Window classes
Message-ID: <7645@hoptoad.uucp>
Date: 15 Jun 89 05:28:19 GMT
References: <3949@hacgate.scg.hac.com> <32367@apple.Apple.COM> <5202@pt.cs.cmu.edu> <5209@pt.cs.cmu.edu> <2478@molokai.sw.mcc.com> <2480@molokai.sw.mcc.com>
Reply-To: tim@hoptoad.UUCP (Tim Maroney)
Distribution: usa
Organization: Eclectic Software, San Francisco
Lines: 21

In article <2480@molokai.sw.mcc.com> dorsett@molokai.sw.mcc.com (Robert Dorsett) writes:
>What is Apple policy on using the WindowKind field of a window record to
>store information on application window classes?  IM V. I only says that TWO
>classes are defined, yet reserves an entire word for the function.

Actually, IM page I-276 says that application windows can be any value
eight or greater.  This can be useful, but it's usually more useful to
store a handle to a relocatable data structure in the refCon field
instead.  Still, there's nothing wrong with storing some kind of window
type information in the windowKind.

Values 0 through 7 are reserved, and all the negative values are
reserved for desk accessory windows.  So be sure you only use 8+.
-- 
Tim Maroney, Mac Software Consultant, sun!hoptoad!tim, tim@toad.com
Postal: 424 Tehama, SF CA 94103; Phone: (415) 495-2934

"The negro slaves of the South are the happiest, and, in some sense, the
 freest people in the world.  The children and the aged and infirm work not
 at all, and yet have all the comforts and neccessaries of life provided for
 them." -- George Fitzhugh, CANNIBALS ALL! OR, SLAVES WITHOUT MASTERS, 1857