Does anyone know where to get copies of the Win32s documentation, such as it is?
I don't know where to find a copy as such (perhaps tucked away in the old Microsoft FTP server, or linked to from a KB article?), but I do have a couple of versions here, shipped with various old compilers. Probably the more detailed file I have is came with the Win32 SDK shipped with Watcom C/C++ 10.6. You may be able to find a copy of it on eBay, I guess. Another version came with Borland C++ 4.51, in a self-contained .hlp file, although this only seems to apply to Win32s 1.1 (the help file is dated 1992-1993). According to http://wrc.gro.clinux.org/johnfindlay/lcc-win32/links.htm, Borland used to have a copy of those help files on its FTP server. They no longer seem to be there, but I've taken the liberty of uploading the old 1.1 programmer's guide to http://www.owenrudge.net/various/win32s.hlp. Note that Win32s 1.1 didn't support things like OLE 2.0, MAPI, ODBC, etc (which later versions of Win32s did, I believe), so getting the latest documentation would probably be best.
Hope this helps,