Microsoft Foundation Classes (mfc.hlp) (Table of Contents; Topic list)
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ASSERT_VALID Macro
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  ASSERT_VALID( object );
 
  Parameter   Description
 
  <object>    An object of a class derived from CObject and with an
              overriding version of the AssertValid member function.
 
  Remarks
 
  Use to test your assumptions about the validity of an object's internal
  state. ASSERT_VALID calls the AssertValid member function of the object
  passed as its argument. By default, the AssertValid member function of
  class CObject is called, but typically you override AssertValid in
  classes that you derive from CObject so the overriding version will be
  called. In your AssertValid override, you can test the object's internal
  validity. For example, if the object represents a linked list, you could
  verify that the head and tail pointers are NULL if the list is empty and
  not NULL if the list is not empty.
 
  See Also
 
  ASSERT, VERIFY, CObject, CObject::AssertValid
 
 
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