[vtkusers] QVTKWidget not updating when interacting

[gde23]

Hello,

i have a qvtkwidget that displays a vtkcontextview. 
When i zoom (scrollwheel) or move the plot nothing seems to happen, however
when i click on another windwo and then back to the QMainwindow the plot is
in, it applies the zoom/interaction that was made before, so it seems there
is an update call missing. 

void Plot::show()
{
    // Set up a 2D scene, add an XY chart to it
    vtkSmartPointer<vtkContextView> view =
      vtkSmartPointer<vtkContextView>::New();
    view->GetRenderer()->SetBackground(1.0, 1.0, 1.0);
    view->GetRenderWindow()->SetSize(400, 400);

    // set up chart
    vtkSmartPointer<vtkChartXY> chart =
      vtkSmartPointer<vtkChartXY>::New();
    view->GetScene()->AddItem(chart);
    chart->SetShowLegend(true);

    int seq = m_spin_seqence->value();
    int source = m_spin_source->value();
    int surf = m_spin_surface->value();

    vtkSmartPointer<vtkTable> table = m_core->getPoints();

    // Add scatter plots
    vtkPlot *points = chart->AddPlot(vtkChart::POINTS);
    #if VTK_MAJOR_VERSION <= 5
    points->SetInput(table, 0, 1);
    #else
    points->SetInputData(table, 0, 1);
    #endif
    points->SetColor(0, 0, 0, 255);
    points->SetWidth(1.0);
   
vtkPlotPoints::SafeDownCast(points)->SetMarkerStyle(vtkPlotPoints::CROSS);

    // For Qt integration
    this->qvtkWidget->SetRenderWindow(view->GetRenderWindow());
    view->SetInteractor(this->qvtkWidget->GetInteractor());

    this->qvtkWidget->GetRenderWindow()->GetInteractor()->Initialize();
    this->qvtkWidget->GetRenderWindow()->GetInteractor()->Start();
}

what am i missing?



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