AdB> To abort a communicationsroutine (ZModem), working 
 AdB> with DosWaitMuxWaitSem, I want to write a thread that 
 AdB> sends a semaphore when the user presses . I can 
 AdB> get it working with a thread looping 
 AdB> KbdCharIn/DosDevIoCtl with KBD$ handle, but I can't 
 AdB> stop it other than killing the thread, and that 


 _beginthread(ZModem, ...);
 do {
      c = getch();
 }while(c != 27);
 DosPostEventSem(hevPleaseStop, ...);

I don't understand why:

  - you are opening $KBD
  - you are using keyboard ioctls
  - you are looping on KbdCharIn (you make it sound like you are using the
    "no wait" option,  which is a no-no).


If,  during the zmodem transfer,  the user is not allowed to interact with
your program (except to press ESC),  there is no reason for the extra
thread.  Instead of checking a semaphore,  you could check the keyboard
instead (kbhit + getch),  after each zmodem block.


--- Maximus/2 3.00