QVTKOpenGLNativeWidget confusion

Support
1

I see VTK has changed it’s Qt integration. I’m confused about how to create a multiple widget (e.g. 4 up ) medical imaging windows. Do I have 1 vtkGenericOpenGLRenderWindow shared between multiple QVTKOpenGLNativeWidgets?

I have my own Qt app with two QVTKOpenGLNativeWidgets and a splitter between them. I add a sphere (based on Bill Lorenson’s QVTKOpenGLNativeWidgets example) and nothing draws?

Anyone have a multi viewport example?

Thanks

Rick

2

You cannot share vtkGenericOpenGLRenderWindow instances between two QVTKOpenGLNativeWidgets. All rendering objects in VTK cannot be shared in general. You’ll need to create different vtkGenericOpenGLRenderWindow instances for each of the vtkGenericOpenGLRenderWindow instances. You can use the same vtkSphereSource, but will need different mapper, actor and renderer for each of the vtkGenericOpenGLRenderWindows.

3

Thanks for the info!

I was able to get my views to work – I simply had to add ->show() to the
`QVTKOpenGLNativeWidgets :>}```

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`Thanks```

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`Rick```