Restores the state of the component.
HRESULT retVal = object.LoadHistory(pStream, pbc);
A pointer to an interface on the stream from which the object loads its persistent state.
A pointer to an interface on a bind context. The bind context is used in binding operations to restore the component's state and is passed to any objects contained by the component, if a binding is to be performed by the contained component.
The container calls IPersistHistory::LoadHistory to request that the component restore its state.
The component should never add a reference to the supplied stream. The stream should not be cached by the component.