# integrating VTK with QT
**URL:** https://discourse.vtk.org/t/integrating-vtk-with-qt/15432
**Category:** Support
**Created:** [March 26, 2025, 12:44pm UTC](https://discourse.vtk.org/t/integrating-vtk-with-qt/15432 "2025-03-26T12:44:02Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@Emmynabs](https://discourse.vtk.org/u/Emmynabs)
#### Post date: [March 26, 2025, 12:44pm UTC](https://discourse.vtk.org/t/integrating-vtk-with-qt/15432/1 "2025-03-26T12:44:02Z")
I need assistance integrating VTK with QT, i have tried integrating them but my QT buttons do not work when i run the application. images do not render when i click the buttons to render them.
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### Author:  [@amaclean](https://discourse.vtk.org/u/amaclean)
#### Post date: [March 26, 2025, 10:15pm UTC](https://discourse.vtk.org/t/integrating-vtk-with-qt/15432/2 "2025-03-26T22:15:01Z")
Have a look at [MinimalQtVTKApp](https://examples.vtk.org/site/Cxx/Qt/MinimalQtVTKApp/), it uses a button called `Randomize`.
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### Author:  [@Mordrago](https://discourse.vtk.org/u/Mordrago)
#### Post date: [March 27, 2025, 1:39pm UTC](https://discourse.vtk.org/t/integrating-vtk-with-qt/15432/3 "2025-03-27T13:39:09Z")
Ok, but QT at Python or C++? Anyway you shoudl use QVTKRenderWindowInteractor to integrate VTK with QT, eq:
```auto
def __init__ (
self, parent: QVTKRenderWindowInteractor):
"""Create new Viewer instance."""
self.ren = vtkRenderer()
self.wren = parent.GetRenderWindow()
self.iren = self.wren.GetInteractor()
```
And next just pin buttons with propper slots and singals.
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### Author:  [@Emmynabs](https://discourse.vtk.org/u/Emmynabs)
#### Post date: [March 30, 2025, 7:20am UTC](https://discourse.vtk.org/t/integrating-vtk-with-qt/15432/4 "2025-03-30T07:20:25Z")
i am using C++ sorry for the late response, i have just been dealing with an emergency situation for days now
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### Author:  [@Emmynabs](https://discourse.vtk.org/u/Emmynabs)
#### Post date: [March 30, 2025, 7:21am UTC](https://discourse.vtk.org/t/integrating-vtk-with-qt/15432/5 "2025-03-30T07:21:03Z")
okay thank you, i will take a look at that
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### Author:  [@amaclean](https://discourse.vtk.org/u/amaclean)
#### Post date: [March 30, 2025, 7:45am UTC](https://discourse.vtk.org/t/integrating-vtk-with-qt/15432/6 "2025-03-30T07:45:42Z")
No problems.
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### Author:  [@Emmynabs](https://discourse.vtk.org/u/Emmynabs)
#### Post date: [March 30, 2025, 7:53am UTC](https://discourse.vtk.org/t/integrating-vtk-with-qt/15432/7 "2025-03-30T07:53:42Z")
would take a look at it now then give you feedback.
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### Author:  [@Emmynabs](https://discourse.vtk.org/u/Emmynabs)
#### Post date: [March 30, 2025, 8:50am UTC](https://discourse.vtk.org/t/integrating-vtk-with-qt/15432/8 "2025-03-30T08:50:58Z")
i have checked it out, is it possible to build a DICOM volume rendering application on top of this code or is there any other example i should take a look at?
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### Author:  [@lassoan](https://discourse.vtk.org/u/lassoan)
#### Post date: [April 1, 2025, 3:17am UTC](https://discourse.vtk.org/t/integrating-vtk-with-qt/15432/9 "2025-04-01T03:17:24Z")
> possible to build a DICOM volume rendering application
A good example is 3D Slicer: it uses VTK+Qt for loading and rendering DICOM images, segmentation objects, meshes, transforms, etc. All the usual features of all medical image viewers, all free, open-source, VTK-based. You can use as is, in C++ and/or Python, or use it as a kit to [build your own custom application](https://www.kitware.com/slicercat-creating-custom-applications-based-on-3d-slicer/) (this is what most companies do), or copy-paste what you need into your own application (tempting, especially if you already invested into developing your own application; but probably not the best choice in the long term, as you don’t automatically benefit from all the platform improvements continuously contributed by others).
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### Author:  [@amaclean](https://discourse.vtk.org/u/amaclean)
#### Post date: [April 1, 2025, 8:07am UTC](https://discourse.vtk.org/t/integrating-vtk-with-qt/15432/10 "2025-04-01T08:07:50Z")
Thankyou for looking at this. Emmanuel, this would be the best approach for DICOM volume rendering.