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echo: os2prog
to: George Simon
from: Lewin Edwards
date: 1995-10-29 01:24:40
subject: Native OS/2 from Native WIN?

GS>      How hard can it be, to take a fully developed Windows

 GS> application, and port it to OS/2, or vice versa for that matter.



Harder than it seems. The APIs diverged a long, long, long time ago. OS/2
is a very different breed of animal nowadays. The first versions of PM were
quite similar, even cosmetically, to vintage versions of Windows (and I
mean that in the sense of old, not fine and valuable ;-), but it's not so
any more. Windows 4.0 has a few superficial cosmetic resemblances to
(stolen ideas from) the Warp shell, but underneath, they are quite
different.



Let's not forget that the Windows equivalent of OS/2 text mode is DOS. You
can write a multithreaded 32-bit text-mode program under OS/2. You can't
under DOS unless you write your own OS addon.



I'm speaking here from the POV of someone who has seen a few simple Windows
programs, said to employer "Let's port to OS/2" and then bitterly
regretted it.



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