### Author:  [@Ilmu011](https://discourse.vtk.org/u/Ilmu011)
#### Post date: [November 9, 2021, 11:00am UTC](https://discourse.vtk.org/t/cylinder-basic-example-doesnt-work/7118/1 "2021-11-09T11:00:39Z")
I am trying to run this: [https://kitware.github.io/vtk-examples/site/Cxx/GeometricObjects/CylinderExample/](https://kitware.github.io/vtk-examples/site/Cxx/GeometricObjects/CylinderExample/)
basic example, but it doesn’t work. The program compiles with no errors, but at execution, I only get an empty window with this error message:
I used vcpkg to install VTK and I am using Visual Studio 2019 with MSVC to build the project.
Edit: Here: [Warning: Link to vtkInteractionStyle for default style selection solution - Titan Wolf](https://blog.titanwolf.in/a?ID=01100-d89c2d3d-b9f9-4346-b686-5ee38f4d32a4) it is implied, that it may be required to enable autoinit, so I added these lines at the top of my code:
```auto
#include
VTK_MODULE_INIT(vtkInteractionStyle);
```
But now, instead of any errors, simply no window appears at all.
---
### Author:  [@amaclean](https://discourse.vtk.org/u/amaclean)
#### Post date: [November 10, 2021, 8:30am UTC](https://discourse.vtk.org/t/cylinder-basic-example-doesnt-work/7118/2 "2021-11-10T08:30:53Z")
Does your CMakeLists.txt look like the one on the web page?
---
### Author:  [@Ilmu011](https://discourse.vtk.org/u/Ilmu011)
#### Post date: [November 10, 2021, 11:11am UTC](https://discourse.vtk.org/t/cylinder-basic-example-doesnt-work/7118/3 "2021-11-10T11:11:35Z")
It’s not a CMake project. The program is built with the default MSVC-Compiler Visual Studio provides.
---
### Author:  [@Paulo\_Carvalho](https://discourse.vtk.org/u/Paulo_Carvalho)
#### Post date: [November 10, 2021, 11:42am UTC](https://discourse.vtk.org/t/cylinder-basic-example-doesnt-work/7118/4 "2021-11-10T11:42:26Z")
Hi,
I’m also not a CMake user. I had to add these to the `.cpp` of my VTK widget class:
```cpp
#include
VTK_MODULE_INIT(vtkRenderingOpenGL2) // VTK was built with vtkRenderingOpenGL2
VTK_MODULE_INIT(vtkInteractionStyle)
VTK_MODULE_INIT(vtkRenderingFreeType)
```
I hope this helps.
cheers,
Paulo
---
### Author:  [@amaclean](https://discourse.vtk.org/u/amaclean)
#### Post date: [November 10, 2021, 10:36pm UTC](https://discourse.vtk.org/t/cylinder-basic-example-doesnt-work/7118/5 "2021-11-10T22:36:37Z")
Unless you have a specific reason not to use CMake it is probably better you learn to use CMake. All the C++ examples rely on CMake and most users of VTK use CMake to set up their projects. CMake will automatically do a lot of the setting up for you.
Visual Studio knows about CMake [CMake projects in Visual Studio](https://docs.microsoft.com/en-us/cpp/build/cmake-projects-in-visual-studio?view=msvc-170), but I havent used this approach. I tend to use cmake-gui and select either ninja or the MSVC IDE when building projects.
---
### Author:  [@Ilmu011](https://discourse.vtk.org/u/Ilmu011)
#### Post date: [November 11, 2021, 12:22pm UTC](https://discourse.vtk.org/t/cylinder-basic-example-doesnt-work/7118/6 "2021-11-11T12:22:55Z")
> [@Paulo\_Carvalho](#):
>
> ```auto
> #include
> VTK_MODULE_INIT(vtkRenderingOpenGL2) // VTK was built with vtkRenderingOpenGL2
> VTK_MODULE_INIT(vtkInteractionStyle)
> VTK_MODULE_INIT(vtkRenderingFreeType)
>
> ```
Thank you very much! This solved the problem!