[vtkusers] Bug in vtkRenderWindowInteractor ?

[alican]

I am using the exact code of this example:
https://www.vtk.org/Wiki/VTK/Examples/Cxx/Widgets/SeedWidgetWithCustomCallback
<https://www.vtk.org/Wiki/VTK/Examples/Cxx/Widgets/SeedWidgetWithCustomCallback>  


with one exception: instead of creating a new renderer and a new render
window, like in the example:
  // A renderer and render window
  vtkSmartPointer<vtkRenderer> renderer = 
vtkSmartPointer<vtkRenderer>::New();
  vtkSmartPointer<vtkRenderWindow> renderWindow = 
vtkSmartPointer<vtkRenderWindow>::New();

I am using my existing renderer and window.

Now, when a user finishes an interaction, I would like to remove the seed
widget, and stay with my renderer and my render window. So I am doing like
that:

	seedWidget->RemoveObserver(vtkCommand::InteractionEvent);
	seedWidget->RemoveObserver(vtkCommand::EndInteractionEvent);
	seedWidget->Off();
	seedWidget = nullptr;
	foreach(vtkSmartPointer<vtkHandleWidget> hw, seeds)
		hw->Off();
	seeds.clear();
	iren->Delete();

It looks OK, the widget disappears, but when I quit my program, the process
still stays active and I can see in debugger that it is stuck in

vtkWin32RenderWindowInteractor::StartEventLoop()

Is it a bug in interactor, or am I doing something wrong?



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