[vtkusers] vtkRenderer

[Massinissa Bandou]

Hello all!

Can someone please tell me whats the difference between:

vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
this->qvtkWidget->GetRenderWindow()->AddRenderer(renderer);


and 

vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
renderWindow->AddRenderer(renderer);
this->qvtkWidget->SetRenderWindow(renderWindow);


Because the following Qt code seems working for the first code above and not
the other.

vtkSmartPointer<vtkEventQtSlotConnect> Connections =
vtkSmartPointer<vtkEventQtSlotConnect>::New();
Connections->Connect(this->qvtkWidget->GetRenderWindow()->GetInteractor(),vtkCommand::KeyPressEvent,this,SLOT(slot_clicked(vtkObject*,unsigned
long,void*,void*)));





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