Win32s was an add-on to Windows 3.1 to allow it to run 32-bit Windows apps before Win95 was available. The "s" in Win32s meant that it was a subset of Win32 because features like threading and others simply weren't available in Win32s.Sure, I know that (I'm working on DPMI32 which isn't for standard mode Windows programs), I was probably being a bit unclear about what I was wondering about. It is quite difficult to find any information about Win32s nowadays and everything I have found was suggesting that Win32s was for running Win32 applications on Win16. Since Wine does run Win32 applications directly it just made me wonder whether Win32s support is something that was once needed when Wine only had Win16 support.
I always assumed that the binary interface was the same as the full Win32. The add-on DLLs that made up Win32s were supposed to translate the 32-bit calls into the equivalent 16-bit calls. However, knowing Microsoft, I could easily be wrong. I do still have old copies of MSDN and I believe that I probably still have an old enough compiler that would produce a Win32s program.
All-in-all, I wouldn't spend much (if any) effort on Win32s because it was simply intended as a transitional system and didn't really get installed in all that many computers. Most 32-bit apps waited for the arrival of Win95 before they were released.
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Bob Amstadt
http://www.amstadt.com/~bob
[EMAIL PROTECTED]
