CObList::RemoveHead

  • 项目

CObject*RemoveHead();

Return Value

The CObject pointer previously at the head of the list.

Remarks

Removes the element from the head of the list and returns a pointer to it.

You must ensure that the list is not empty before calling RemoveHead. If the list is empty, then the Debug version of the Microsoft Foundation Class Library asserts. Use IsEmpty to verify that the list contains elements.

Example

See CObList::CObList for a listing of the CAge class.

CObList list;
CAge* pa1;
CAge* pa2;

list.AddHead( pa1 = new CAge( 21 ) );
list.AddHead( pa2 = new CAge( 40 ) ); // List now contains (40, 21).
ASSERT( *(CAge*) list.RemoveHead() == CAge( 40 ) );  // Old head
ASSERT( *(CAge*) list.GetHead() == CAge( 21 ) );  // New head
delete pa1;
delete pa2;

CObList Overview |  Class Members |  Hierarchy Chart

See Also   CObList::GetHead, CObList::AddHead