Path: utzoo!mnetor!uunet!mcvax!uvabick!thomas
From: thomas@uvabick.UUCP (Thomas Fruin)
Newsgroups: comp.sys.mac.programmer
Subject: Re: MultiFinder switch bug with custom WDEFs
Message-ID: <244@uvabick.UUCP>
Date: 24 Apr 88 03:02:11 GMT
References: <242@uvabick.UUCP> <8700@apple.Apple.Com>
Organization: uvabick
Lines: 39
Keywords: MultiFinder doesn't allow switching when it thinks it sees a dBoxProc


 Darin Adler writes:

 > Although this is a bug, I have heard that some here want to retain it as a
 > feature. You see, if someone wants to create a non-standard WDEF that is a
 > modal-type window, there is nothing he can do *without* this bug. With it,
 > he only needs to define his modal-looking window as variation 1 (and avoid
 > that variation the rest of the time), and MultiFinder will respect the modal
 > window.
 >
 > What do you think?

Hmm, hadn't thought of it that way.  It's not a bad idea.  One could still
argue that people who write custom WDEFs that should behave modal will take
the trouble to treat them as modal in their source, but I still like the
idea.  But make sure to document this new "feature" :)

 Phil Goldman writes:

 > dBoxProc is reserved for modal dialogs, no matter what the WDEF is.
 > This is necessary because we have to allow for the system (or even
 > an app) to easily patch the standard WDEF by adding some code to the front
 > and then falling thru to the standard one.  This would cause problems if we
 > checked the resource ID too.

What a dirty thing to do!  I thought I had seen some pretty bad things one
could do with WDEFs in MacTutor, but this beats everything ...

Seriously, I hadn't thought of this one.  Anyway, I had to put some extra
code in my own application (that uses the custom WDEF), because I had used
up all 4 bits in the variation code.

-- Thomas Fruin

   fruin@hlerul5.BITNET                       University of Leiden
   thomas@uvabick.UUCP                        University of Amsterdam
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