Using VTK in QT using Cmake

Support
1

Hello,

I’m on Windows 11 and have been really struggling to include VTK into the QT. I am very new to VTK. I have built and installed VTK (via ninja) by enabling the following configurations set using cmake-gui:

  1. VTK_GROUP_Qt set to YES
  2. VTK_QT_VERSION set to 6
  3. -DVTK_MODULE_ENABLE_GUISupprtQt set to YES
  • I have also set QML2_IMPORT_PATH=/path/to/vtk/lib/qml/VTK.9.3 and set QML_IMPORT_PATH=/path/to/vtk/lib/qml/VTK.9.3 into cmd.

Now, I have a Qt project in another directory, whose tree is as follows:

VTK Project
| + build
| | + Desktop_Qt_6_7_2_MSVC2019_64bit-Debug
| - CMakeLists.txt
| - CMakeLists.txt.user
| - main.cpp
| - Main.qml

and my VTK installation directory tree looks like this:

VTKBin
| + bin
| | - vtkcgns-9.3d.dll ... (.dll files)
| + include
| | + vtk-9.3
| | | + Octree ...
| | | - QQuickVTKRenderWindow.h ... (.h files)
| + lib
| | + cmake
| | | + vtk-9.3
| | | | - FindCGNS.cmake ... (.cmake files)
| | + qml
| | | + VTK.9.3
| | | | - plugins.qmltypes
| | | | - qmldir
| | | | - qmlvtkplugin.dll
| | + vtk-9.3
| | - vtkcgns-9.3.lib ... (.lib files)
| + share
| | + licenses
| | + vtk-9.3

In my Qt project, I have added the following to the CmakeLists.txt (VTK_DIR points to /VTKBin/lib/cmake/vtk-9.3)

find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
include_directories("C:/VTKBin/include/vtk-9.3/")
add_subdirectory(${VTK_DIR})

When I want to add the following into the main.cpp in order to setting up Graphics Backend (as explained in official Doxygen page here), I use QQuickVTKRenderWindow::setupGraphicsBackend(); but I get a LNK2019: unresolved external symbol error for it. Please, please help me! (or at least give me a hint of official vtk docs for this!)

Thank you so much in advance,

Regards

2

Hello,

Adding VTK only is not enough. You need to add Qt libraries as well. Please, take a look at this: Building a QML application | Build with CMake 6.7.2 (qt.io). It has a sample CMakeLists.txt that you can use to properly configure a Qt project with CMake.

best,

PC