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──Microsoft Foundation Classes──────────────────────────────────────────────
 
  CObject*& GetPrev( POSITION& rPosition );
  CObject* GetPrev( POSITION& rPosition ) const;
 
  Parameter   Description
 
  <rPosition> A reference to a POSITION value returned by a previous
              GetPrev or other member function call.
 
  Remarks
 
  GetPrev gets the list element identified by <rPosition>, then sets
  <rPosition> to the POSITION value of the previous entry in the list. You
  can use GetPrev in a reverse iteration loop if you establish the initial
  position with a call to GetTailPosition or Find.
 
  You must ensure that your POSITION value represents a valid position in
  the list. If it is invalid, then the Debug version of the library
  asserts.
 
  If the retrieved element is the first in the list, then the new value of
  <rPosition> is set to NULL.
 
  Return Value
 
  See the return value description for ◄GetHead►.
 
  Example
 
     CObList list;
     POSITION pos;
 
     list.AddHead( new CAge(21) );
     list.AddHead( new CAge(40) ); // List now contains (40, 21)
     // Iterate through the list in tail-to-head order
     for( pos = list.GetTailPosition(); pos != NULL; )
     {
  #ifdef _DEBUG
         afxDump << list.GetPrev( pos ) << "\n";
  #endif
     }
 
  The results from this program are as follows:
 
  a CAge at $421C 21
  a CAge at $421C 40
 
  See Also
 
  ◄CObList::Find►, ◄CObList::GetTailPosition►, ◄CObList::GetHeadPosition►,
  ◄CObList::GetNext►, ◄CObList::GetHead►
 
 
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