C Language and Libraries Help (clang.hlp) (Table of Contents; Topic list)
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_vmsize
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─────Run-Time Library───────────────────────────────────────────────────────
 
  Include:   <vmemory.h>
 
  Syntax:    unsigned long _vmsize( _vmhnd_t handle );
 
  Returns:   size of specified virtual memory block, in bytes.
 
  See also:  _vmalloc, _vrealloc
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