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Article #15854

Change in "_Launch" interface...

#15854
From: Richard Siegel
Date: Fri, 01 May 1987 11:38
46 lines
2137 bytes
Some questions:

	1) Why the change? It seems to me that there's a large number
of programs that have the "Transfer" feature (as it's usually called),
that will suddenly stop working.

	2) For Old Mac and Mac Plus owners (Old Mac = 64K ROM), does
this change come with System 4.x? Or is it simple a change in the ROM
for the SE and Mac II, so the "Transfer" feature will only crash
on the new machines?

	3) *Flame On* Why is Apple doing this? I personally would simply
add another trap (_SubLaunch or somehting) to the 256K ROMs, or
make the existing _Launch trap smart enough to know when it's being
called with the old protocol, and adjust accordingly. As I said,
a lot of existing applications will suddenly stop working, and
there are going to be a lot of pissed-off users (not to mention developers!)
out there. I may not be looking at things realistically, but... *Flame Off*

	4) By the way, will this interface change be backward compatible?
Suppose I fix the application to use the new interface. What if someone
runs it on an older System? Does it break then? Or will some way be
provided for the application to know which interface to use?

	"I would advise people to wait the week or two for the
technote before implementing a lot of Launch code that
will have to be changed.


	Great. 8-)

		--Rich


Richard M. Siegel
Materials Characterization Instrumentation Section
Mail Stop 231
NASA/Langley Research Center
Hampton, Virginia 23665
(804) 865-3036

Arpanet: rs4u@andrew.cmu.edu
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From: rs4u#@ANDREW.CMU.EDU (Richard Siegel)
Newsgroups: comp.sys.mac
Subject: Change in "_Launch" interface...
Message-ID: <MUa8YYy00UhTQM00cm@andrew.cmu.edu>
Date: Fri, 1-May-87 07:38:12 EDT
Article-I.D.: andrew.MUa8YYy00UhTQM00cm
Posted: Fri May  1 07:38:12 1987
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