[vtk-developers] Members of smartpointers as observers

[David Doria]

I made an example of the new class member observer functionality:
http://www.vtk.org/Wiki/VTK/Examples/Cxx/Interaction/ObserverMemberFunction

This worked fine:
  MyInteractorStyle* style = MyInteractorStyle::New();
  renderWindowInteractor->AddObserver(vtkCommand::KeyPressEvent,
style, &MyInteractorStyle::KeypressCallbackFunction);

While this produced errors:
  vtkSmartPointer<MyInteractorStyle> style2 =
    vtkSmartPointer<MyInteractorStyle>::New();
  renderWindowInteractor->AddObserver(vtkCommand::KeyPressEvent,
style2, &MyInteractorStyle::KeypressCallbackFunction);

Is there a way to set a member of a smart pointer to a class as the callback?

Also, if someone wants to add the code for properly handling the
dangling pointers that would be great.

David