C Language and Libraries Help (clang.hlp) (Table of Contents; Topic list)
_vlock
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─────Run-Time Library───────────────────────────────────────────────────────
 
  Include:   <vmemory.h>
 
  Syntax:    void __far *vlock( _vmhnd_t handle );
 
  Returns:   a far pointer to DOS memory if successful, or NULL if not.
 
  See also:  _vload, _vlockcnt, _vunlock
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