[vtkusers] how to subclass a vtk class

Dan Lipsa dan.lipsa at kitware.com
Thu Feb 22 09:09:10 EST 2018

I would advise to use vtk fields inside your Qt classes instead of using
subclassing. You would need to subclass a vtk class only if you do vtk
If you want o see how it is done the best place to look at is the vtk
source code. For instance vtkCylinderSource is derived from

There are Qt examples you can take a look at here



On Wed, Feb 21, 2018 at 8:52 PM, Walter Rhoden via vtkusers <
vtkusers at vtk.org> wrote:

> I am looking for guidance on how to correctly subclass a vtk class.  I
> have seen a number of older examples (vtk 5 or earlier) that all seem to
> fail now for various reasons.  I attempted to debug a number of them but
> this was an endeavor in frustration and I gave up in disgust.
> Does anyone know of a good up to date guide document and/or simple example
> that illustrates the basics?
> I am working in C++ and with QT.  I have the basics down pretty good.  I
> am looking to subclass some of the basic geometry classes such as
> vtkcylindersource and similar with the idea of added some additional
> methods specific to the overall function of my QT program/project.
> Obviously this is not as simple as calling out the vtk class as the
> inherited class.
> Any help/guidance would be greatly appreciated.
> Thanks,
> Guy
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