vtkWidget enabling and disabling

I have a large visualisation application using QT (Geant4) and I would like to allow users to enable and disable various widgets based on QT user interaction.

So I have absolutely no problem getting

  vtkNew<vtkImplicitPlaneRepresentation> clipperPlaneRepresentation;
  vtkNew<vtkImplicitPlaneWidget2> clipperPlaneWidget;

working. But I would like to disable the representation so that there is no widget in the render window. I have tried various combinations of

clipperPlaneWidget->SetEnabled(0 or 1);



and I cannot change the presence or absence of the widget

Ok Iā€™m an idiot: my private member variables were shadowed by local variables, works amazingly well.

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