Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!wuarchive!uunet!tymix!tardis!oliveb!amiga!boing!dale
From: dale@boing.UUCP (Dale Luck)
Newsgroups: comp.sys.amiga.programmer
Subject: Re:   Window Waiting (was <None> )
Message-ID: <988@boing.UUCP>
Date: 30 May 91 17:05:53 GMT
References: <1991May24.102345.1@wombat.newcastle.edu.au> <1991May24.092943.31027@kuhub.cc.ukans.edu> <21912@cbmvax.commodore.com> <mykes.2894@amiga0.SF-Bay.ORG> <21943@cbmvax.commodore.com> <mykes.2938@amiga0.SF-Bay.ORG>
Reply-To: dale@boing.UUCP (Dale Luck)
Organization: Boing, Milpitas, Ca.
Lines: 19

In article <mykes.2938@amiga0.SF-Bay.ORG> mykes@amiga0.SF-Bay.ORG (Mike Schwartz) writes:
>>>Or even better is to use a structure assignment to copy the entire contents
>>>of the message to a private message struct before replying...
>>Brian
>Again, I suggest a structure copy, even though you are also copying the ExecMessage,

In general it is not a good idea to use structure copies of system structures
that have any chance of changing size. There are some fields that of course
we all depend on but there maybe fields application programmers do not
depend on. These fields will come and go as Intuition progresses.

You should only copy the fields you need, no more. Do not copy the fields
you have no need for. It is a waste of time, code space, data space, and
potentially a major problem when Commodore-Amiga decides it needs to change
something that is private to itself.

-- 
Dale Luck     GfxBase/Boing, Inc.
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