Hello Miha,
 
 CA> as far as os/2 is concerned and afaik you can only access
 CA> whole files. 

 MV> No. You can lock a only a range, using (for 
 MV> example) DosSetFileLocks function, and setting 
 MV> unlock file offset and unlock range to zero. 

Do you mean by this that only a maximum of one contigeous region can be
locked? Since I would like to lock multiple regions within a file, each of
which is contigeous, but the total are sure to be discontigeous. (am I
clear this time?)
 
CU,
 
Erik/2

--- Maximus 2.01