DE> In fact, DosGetMessage (and its aliases DOSGETMESSAGE, 
 DE> Dos32GetMessage and DOS32GETMESSAGE too) does exist 
 DE> in OS2386.LIB. It is a small object (not an import 
 DE> definition), containing code which calculates the 
 DE> 'extra' parameter you discovered and then enters 
 DE> Dos32TrueGetMessage. The mystic extra parameter is 
 DE> the adress of the so called message segment or 0 if 
 DE> there isn't one. The message segment is added to 
 
Ah!  I understand now.  Thanks for shedding such insight on it.  I
suspected it was something along those lines, but have never seen it
documented...
 
- Mike

--- Maximus/2 3.00