# error: Project ERROR: Unknown module(s) in QT: vtk

**URL:** https://discourse.vtk.org/t/error-project-error-unknown-module-s-in-qt-vtk/14020
**Category:** Support
**Tags:** code, vtkjs
**Created:** [June 11, 2024, 6:47pm UTC](https://discourse.vtk.org/t/error-project-error-unknown-module-s-in-qt-vtk/14020 "2024-06-11T18:47:49Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![Dinesh\_Srivastava](https://discourse.vtk.org/user_avatar/discourse.vtk.org/dinesh_srivastava/32/8950_2.png) [@Dinesh\_Srivastava](https://discourse.vtk.org/u/Dinesh_Srivastava)
#### Post date: [June 11, 2024, 6:47pm UTC](https://discourse.vtk.org/t/error-project-error-unknown-module-s-in-qt-vtk/14020/1 "2024-06-11T18:47:49Z")

</div>

I Installed and setup VTK on my windows 10. Updated .pro file as below  
QT += core gui  
QT += vtk  
QT += widgets

CONFIG += c++17

# You can make your code fail to compile if it uses deprecated APIs.

# In order to do so, uncomment the following line.

#DEFINES += QT\_DISABLE\_DEPRECATED\_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0  
INCLUDEPATH += “C:\Program Files\VTK\include\vtk-9.3”  
INCLUDEPATH += “C:\VTK-9.3.0\GUISupport\Qt”  
LIBS += -LC:\“Program Files”\VTK\lib -lvtkCommonCore-9.3 -lvtkRenderingCore-9.3 -lvtkInteractionStyle-9.3

SOURCES +=   
main.cpp   
mainwindow.cpp

HEADERS +=   
mainwindow.h

FORMS +=   
mainwindow.ui

# Default rules for deployment.

qnx: target.path = /tmp/$${TARGET}/bin  
else: unix:!android: target.path = /opt/$${TARGET}/bin  
!isEmpty(target.path): INSTALLS += target

but getting error unknown module.  
If I removed “QT += vtk” than getting linking error for all vtk library.  
Please suggest what I am missing

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<div class="post-metadata">

### Author: ![ben.boeckel](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/b/ea5d25/32.png) [@ben.boeckel](https://discourse.vtk.org/u/ben.boeckel)
#### Post date: [June 11, 2024, 8:33pm UTC](https://discourse.vtk.org/t/error-project-error-unknown-module-s-in-qt-vtk/14020/2 "2024-06-11T20:33:37Z")

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VTK does not provide anything that would make `QT += vtk` work in `qmake`. You’ll have to list libraries that you need by name (like for any other third party package in `qmake`).

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<div class="post-metadata">

### Author: ![Dinesh\_Srivastava](https://discourse.vtk.org/user_avatar/discourse.vtk.org/dinesh_srivastava/32/8950_2.png) [@Dinesh\_Srivastava](https://discourse.vtk.org/u/Dinesh_Srivastava)
#### Post date: [June 12, 2024, 6:01am UTC](https://discourse.vtk.org/t/error-project-error-unknown-module-s-in-qt-vtk/14020/3 "2024-06-12T06:01:17Z")

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but if I removed that QT += vtk getting below errors

 ![image](https://discourse.vtk.org/uploads/default/original/2X/d/d1888ba5ed740af4eaffec157a0514df9d24845f.png)  
how can I resolve these error.  
My code is #include   
#include   
#include \<vtkSmartPointer.h\>  
#include \<vtkRenderer.h\>  
#include \<vtkRenderWindow.h\>  
#include \<vtkRenderWindowInteractor.h\>  
#include \<vtkPolyDataMapper.h\>  
#include \<vtkActor.h\>  
#include \<vtkPoints.h\>  
#include \<vtkCellArray.h\>  
#include \<vtkLine.h\>  
#include \<vtkPolyData.h\>

int main(int argc, char \*argv)  
{  
QApplication a(argc, argv);  
QMainWindow window;

```
// Create a VTK renderer, render window, and interactor
vtkSmartPointer<vtkRenderer> renderer =
    vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renderWindow =
    vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);

// Create a vtkPoints object to hold the well path points
vtkSmartPointer<vtkPoints> points =
    vtkSmartPointer<vtkPoints>::New();

// Create a dummy well path
points->InsertNextPoint(0.0, 0.0, 0.0); // Start point
points->InsertNextPoint(10.0, 0.0, 0.0); // Next point
points->InsertNextPoint(20.0, 5.0, 0.0); // Another point
points->InsertNextPoint(30.0, 5.0, -5.0); // Another point
points->InsertNextPoint(40.0, 10.0, -5.0); // End point

// Create a vtkCellArray to hold the lines connecting the points
vtkSmartPointer<vtkCellArray> lines =
    vtkSmartPointer<vtkCellArray>::New();

// Create a line connecting each pair of adjacent points
for (vtkIdType i = 0; i < points->GetNumberOfPoints() - 1; i++)
{
    vtkSmartPointer<vtkLine> line =
        vtkSmartPointer<vtkLine>::New();
    line->GetPointIds()->SetId(0, i);
    line->GetPointIds()->SetId(1, i + 1);
    lines->InsertNextCell(line);
}

// Create a vtkPolyData object to hold the points and lines
vtkSmartPointer<vtkPolyData> polyData =
    vtkSmartPointer<vtkPolyData>::New();
polyData->SetPoints(points);
polyData->SetLines(lines);

// Create a mapper and actor for the well path
vtkSmartPointer<vtkPolyDataMapper> mapper =
    vtkSmartPointer<vtkPolyDataMapper>::New();
mapper->SetInputData(polyData);
vtkSmartPointer<vtkActor> actor =
    vtkSmartPointer<vtkActor>::New();
actor->SetMapper(mapper);

// Add the actor to the renderer
renderer->AddActor(actor);

// Set the background color
renderer->SetBackground(0.1, 0.2, 0.4);

// Initialize and start the interactor
renderWindow->Render();
renderWindowInteractor->Start();

return a.exec();

```

}

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<div class="post-metadata">

### Author: ![ben.boeckel](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/b/ea5d25/32.png) [@ben.boeckel](https://discourse.vtk.org/u/ben.boeckel)
#### Post date: [June 12, 2024, 10:58pm UTC](https://discourse.vtk.org/t/error-project-error-unknown-module-s-in-qt-vtk/14020/4 "2024-06-12T22:58:47Z")

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You’ll have to link to VTK libraries. It looks like you’ll need at least `vtkCommonCore`, `vtkRenderingCore`, and `vtkRenderingOpenGL2`. There may be others as well. I don’t know `qmake` enough to tell you how to do it, but you’ll have to use the library names I imagine.