[vtkusers] Reset Window Level / Pressing 'r' key

[FrankWhite]

Hi 

Does anyone know the code behind pressing the 'r' key or how to duplicate
its functionality? 

I want the camera to reset such that all actors are in the center of the
window. 

I tried: 
- renderer->ResetCamera(); 
- renderer->Render(); 
- Invoking the ResetWindowLevel event 
- .. 

None seem to do the job right. Only when I press 'r' it is centered
correctly. 

I hope someone can shed some light over this. 

Thanks in advance. 

Frank W.

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