Path: utzoo!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: Secret coding techniques (was: User item in a SFGetFile dialog - how?)
Message-ID: <8723@hoptoad.uucp>
Date: 16 Oct 89 23:40:42 GMT
References: <2426@tekno.chalmers.se> <8711@hoptoad.uucp> <2466@tekno.chalmers.se>
Reply-To: tim@hoptoad.UUCP (Tim Maroney)
Organization: Eclectic Software, San Francisco
Lines: 34

In article <2466@tekno.chalmers.se> d83_sven_a@tekno.chalmers.se
(SVEN AXELSSON) writes:
>OK, I've had a few answers similar to this one. What I meant was that I thought
>I had to write my own DialogHook procedure - something altogether different
>(sorry about the mixup).

No mixup.  What Inside Mac refers to as the "DlgHook", I was referring
to as a filter.  I commonly refer to dialog callbacks as item and event
filters.  Sorry for the confusion.  You do need to write your own
DlgHook, and it is very easy to do so.

>Actually I found out about the -1 item myself
>shortly after my first posting in Apples source-code examples (SC018-StdFile).
>The next question is then - where is this documented? Not in Inside Macintosh
>at least (?) I suppose there are lots and lots of useful but not-too-well-
>documented techniques for writing code. Is there a definite source for
>finding them (loke a book or something)?

The Macintosh Technical Notes.  You really can't do serious Mac
programming without them.  The -1 callback is documented in Tech Note
47, "Customizing Standard File".  In my opinion, there is nothing in
the technical notes which should not be in Inside Mac, but we all know
how seriously the Apple folks take my opinions.  A small amount does
get folded back into new volumes of Inside Mac when they come out, but
most doesn't.

Speaking of which -- given the massive expansion of models of the Mac
this year, we should be getting a new Inside Mac soon.  Any ideas on
when it's coming out?  If System 7.0 is 1st quarter 1990, then I guess
Inside Mac volume 6 will probably be 2nd quarter 1990.
-- 
Tim Maroney, Mac Software Consultant, sun!hoptoad!tim, tim@toad.com

The fact is self-evident from the text and requires no supporting argument.