vtkSplineWidget2 not pickable or read only

Support
#1

Is there any method to setup vtkSplineWidget2 as not pickable ? I have tried following methods:

	pSplineRepresentation->DragableOff();
	pSplineRepresentation->ClosedOff();
	pSplineRepresentation->PickableOff();

However, I still can to drag and move the spline widget. Here is the entire code:

if (NULL == m_pSpline->GetInteractor())
{
	m_pSpline->SetInteractor(m_pInteractor);
	m_pSpline->SetCurrentRenderer(m_pRenderer);

	m_pSpline->CreateDefaultRepresentation();	// create default representation
	vtkSplineRepresentation* pSplineRepresentation = vtkSplineRepresentation::SafeDownCast(m_pSpline->GetRepresentation());
	pSplineRepresentation->SetNumberOfHandles(5);
	pSplineRepresentation->SetHandlePosition(0, 0, 0, 0);
	pSplineRepresentation->SetHandlePosition(1, 0.1, 0.1, 0.1);
	pSplineRepresentation->SetHandlePosition(2, 0.5, 0.5, 0.5);
	pSplineRepresentation->SetHandlePosition(3, 0.8, 0.8, 0.8);
	pSplineRepresentation->SetHandlePosition(4, 10, 10, 10);
	pSplineRepresentation->SetLineColor(0.9, 0.3, 0.3);
	pSplineRepresentation->GetLineProperty()->SetLineWidth(4);
	pSplineRepresentation->DragableOff();
	pSplineRepresentation->PickableOff();
	pSplineRepresentation->BuildRepresentation();
	vtkSplineWidgetCallback* pCallback = vtkSplineWidgetCallback::New();
	pCallback->SetView(this);
	m_pSpline->AddObserver(vtkCommand::StartInteractionEvent, pCallback);
	m_pSpline->AddObserver(vtkCommand::InteractionEvent, pCallback);
	m_pSpline->AddObserver(vtkCommand::EndInteractionEvent, pCallback);
	pCallback->Delete();
}

I have used wrongly these methods: DragableOff, ClosedOff, PickableOff ? Or is referring to something else ?

#2

I noticed in VTK github that DragableOff and PickableOff is called as actors, never as widgets … should I work with vtkSplineWidget2 as actor in order to run successfully PickableOff ? But how ?