Is there any kind of documentation available that I can get for the
OS/2 API without buying a C++ compiler or paying an arm and a leg?

      As foolish as it may sound, I'm working with the OS/2 patch for BP7,
and plugging in API calls where ever I can.  Unfortunately all I have is a
list of calls with virtually no documentation, something like this:

function KbdCharIn(var kbci: TKBDKEYINFO; fWait: Word; hkbd: HKBD): Word;
...
function KBDCHARIN; external 'KBDCALLS' index 4;

      I can figure out some of it by looking at how it's used.  But there
are going to be some that I won't have a clue what they are expecting.