HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

             TC: int lock( int handle, long offset, long length )

       - prototype in io.h

       - locks arbitrary, non-overlapping regions of any file (DOS 3.X),
         preventing reads/writes to those regions
       - returns 0 on success, else -1 on error
       - all locks must be released before program termination
       - MS C uses locking()
       - see   unlock()

Esc or Alt-X to exit lock (C) Home/PgUp/PgDn/End ←↑↓→
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