[vtkusers] vtkArrowSource not working with vtkHandleWidget

[ankushjain]

I am trying to display arrow (using vtkArrowSource) on the vtkHandleWidget as
follow:

    vtkArrowSource *arrSrc = vtkArrowSource::New();
    vtkPolygonalHandleRepresentation3D *axes =
vtkPolygonalHandleRepresentation3D::New();
    axes->SetHandle(arrSrc->GetOutput());
    vtkSmartPointer<vtkHandleWidget> widget =
vtkSmartPointer<vtkHandleWidget>::New();
    widget->SetRepresentation(axes);
    widget->SetInteractor( renderWindowInteractor );
    widget->SetEnabled( 1 );

but nothing comes on screen.

Instead if I use vtkOrientationMarkerWidget in place of vtkHandleWidget I
can see the arrow:
    vtkArrowSource *arrSrc = vtkArrowSource::New();
    vtkPolygonalHandleRepresentation3D *axes =
vtkPolygonalHandleRepresentation3D::New();
    axes->SetHandle(arrSrc->GetOutput());
    vtkSmartPointer<vtkOrientationMarkerWidget> widget =
vtkSmartPointer<vtkOrientationMarkerWidget>::New();
    widget->SetOrientationMarker( axes );
    widget->SetInteractor( renderWindowInteractor );
    widget->SetEnabled( 1 );

What could be the reason of vtkArrowSource not working with vtkHandleWidget.

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