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QtCreator errors with QtGraphs QML

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  • SGaistS SGaist

    Hi,

    Do you mean you have errors shown from the code model or is your code not working ?

    T Offline
    T Offline
    Tobias83
    wrote on last edited by
    #3

    @SGaist The QtCreator says "unknown component". And the runtime error is
    QQmlApplicationEngine failed to load component
    qrc:/qt_qml/Main.qml:53:13: LineSeries is not a type

    Tobias

    JoeCFDJ 1 Reply Last reply
    0
    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #4

      Can you share a minimal compilable example that shows this ?

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      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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      • SGaistS SGaist

        Can you share a minimal compilable example that shows this ?

        T Offline
        T Offline
        Tobias83
        wrote on last edited by
        #5

        @SGaist If I can say this: I think its not a problem with my code. I think there is some software package for QtGraphs missing. In comparism with QtCharts, there is no

        • libQt6GraphsQml6 -> /usr/lib64/
        • qt6-graphsqml-devel -> /usr/include/qt6/QtGraphsQml/

        When I tried to use QtCharts before, the remaining prompts were also not found by QtCreator, before I installed the corresponding devel packages from the repo ...

        Tobias

        SGaistS 1 Reply Last reply
        0
        • T Tobias83

          @SGaist The QtCreator says "unknown component". And the runtime error is
          QQmlApplicationEngine failed to load component
          qrc:/qt_qml/Main.qml:53:13: LineSeries is not a type

          Tobias

          JoeCFDJ Offline
          JoeCFDJ Offline
          JoeCFD
          wrote on last edited by JoeCFD
          #6

          @Tobias83 said in QtCreator errors with QtGraphs QML:

          LineSeries

          do you have
          import QtCharts 2.8
          in Main.qml?
          https://doc.qt.io/qt-6/qml-qtcharts-lineseries.html

          T 1 Reply Last reply
          0
          • T Tobias83

            @SGaist If I can say this: I think its not a problem with my code. I think there is some software package for QtGraphs missing. In comparism with QtCharts, there is no

            • libQt6GraphsQml6 -> /usr/lib64/
            • qt6-graphsqml-devel -> /usr/include/qt6/QtGraphsQml/

            When I tried to use QtCharts before, the remaining prompts were also not found by QtCreator, before I installed the corresponding devel packages from the repo ...

            Tobias

            SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #7

            @Tobias83 I just realized you have 6.7. Qt Graphs went out of tech preview with 6.8.

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            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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            • JoeCFDJ JoeCFD

              @Tobias83 said in QtCreator errors with QtGraphs QML:

              LineSeries

              do you have
              import QtCharts 2.8
              in Main.qml?
              https://doc.qt.io/qt-6/qml-qtcharts-lineseries.html

              T Offline
              T Offline
              Tobias83
              wrote on last edited by
              #8

              @JoeCFD I have

              import QtGraphs 2.12
              
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              • SGaistS SGaist

                @Tobias83 I just realized you have 6.7. Qt Graphs went out of tech preview with 6.8.

                T Offline
                T Offline
                Tobias83
                wrote on last edited by Tobias83
                #9

                @SGaist said in QtCreator errors with QtGraphs QML:

                Graphs went out of tech preview with 6.8

                What does that mean?

                On my Computer I have libQt6Core6 6.8.2-3.2. I thought the libs are downward compatible. Should I change

                find_package(Qt6 6.7 REQUIRED COMPONENTS Qml Core Quick Graphs)
                

                With changing in

                find_package(Qt6 6.8 REQUIRED COMPONENTS Qml Core Quick Graphs)
                

                there is no change.

                Tobias

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                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #10

                  How did you install Qt ?
                  Which packages do you have ?

                  Interested in AI ? www.idiap.ch
                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                  • SGaistS SGaist

                    How did you install Qt ?
                    Which packages do you have ?

                    T Offline
                    T Offline
                    Tobias83
                    wrote on last edited by Tobias83
                    #11

                    @SGaist I think its not up to Qt, because QtCharts worked for me. But maybe there is a devel package for qml needed as I wrote ...

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                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #12

                      That's why I am asking how you installed Qt.

                      Interested in AI ? www.idiap.ch
                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                      • SGaistS SGaist

                        That's why I am asking how you installed Qt.

                        T Offline
                        T Offline
                        Tobias83
                        wrote on last edited by
                        #13

                        @SGaist I have installed Qt via system installation, because I have OpenSuse Tumbleweed with KDE Plasma as OS. The packages are updated via the official repositories of OpenSuse. Qt Creator is also installed via the repos.

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                        • SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by
                          #14

                          Are you able to build and run any of the Qt Graphs examples ?

                          Interested in AI ? www.idiap.ch
                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                          • SGaistS SGaist

                            Are you able to build and run any of the Qt Graphs examples ?

                            T Offline
                            T Offline
                            Tobias83
                            wrote on last edited by
                            #15

                            @SGaist OK, the hellographs example is working: hellographs on https://code.qt.io
                            I tried to make the same cmakelists.txt, but I don't know, whats the difference between my project and hellographs. There are some warnings in QtCreator like:
                            qabstractaxis.h:17: Warnung: Multiple C++ types called QAbstractAxis found!

                            or

                            /usr/lib64/cmake/Qt6Core/Qt6CoreMacros.cmake:792:EVAL:1: Warnung:
                            Call-Stack:
                            /usr/lib64/cmake/Qt6Core/Qt6CoreMacros.cmake:792:EVAL:1 (qt6_finalize_target)
                            /usr/lib64/cmake/Qt6Core/Qt6CoreMacros.cmake:823 (_qt_internal_finalize_executable)
                            /usr/lib64/cmake/Qt6Core/Qt6CoreMacros.cmake:745 (cmake_language)
                            /usr/lib64/cmake/Qt6Core/Qt6CoreMacros.cmake:745 (qt6_import_qml_plugins)
                            /home/tobias/Git-dev/HardCore/CMakeLists.txt:72 (qt_add_qml_module)
                            /usr/lib64/cmake/Qt6Qml/Qt6QmlMacros.cmake:1241 (qt6_add_qml_module)
                            /usr/lib64/cmake/Qt6Qml/Qt6QmlMacros.cmake:708 (__qt_internal_setup_policy)
                            /usr/lib64/cmake/Qt6Qml/Qt6QmlMacros.cmake:4216 (message)

                            or

                            /usr/lib64/cmake/Qt6Core/Qt6CoreMacros.cmake:792:EVAL:1: Warnung: The qml plugin 'qmlplugin' is a dependency of 'simHardcoreQt6', but the
                            link target it defines (Qt6::qmlplugin) does not exist in the current
                            scope. The plugin will not be linked.
                            Call-Stack:
                            /usr/lib64/cmake/Qt6Core/Qt6CoreMacros.cmake:792:EVAL:1 (qt6_finalize_target)
                            /usr/lib64/cmake/Qt6Core/Qt6CoreMacros.cmake:823 (_qt_internal_finalize_executable)
                            /usr/lib64/cmake/Qt6Core/Qt6CoreMacros.cmake:745 (cmake_language)
                            /usr/lib64/cmake/Qt6Core/Qt6CoreMacros.cmake:745 (qt6_import_qml_plugins)
                            /usr/lib64/cmake/Qt6Qml/Qt6QmlMacros.cmake:4216 (message)

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                            • SGaistS Offline
                              SGaistS Offline
                              SGaist
                              Lifetime Qt Champion
                              wrote on last edited by
                              #16

                              Are you trying to use both Qt Graphs and Qt Charts at the same time ?

                              Interested in AI ? www.idiap.ch
                              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                              T 1 Reply Last reply
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                              • SGaistS SGaist

                                Are you trying to use both Qt Graphs and Qt Charts at the same time ?

                                T Offline
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                                Tobias83
                                wrote on last edited by
                                #17

                                @SGaist If I remove all the QtCharts promts in CMakeLists.txt and Main.qml, the error remains.

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                                • SGaistS Offline
                                  SGaistS Offline
                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #18

                                  Did you nuke the build folder after these changes to ensure you start from a clean state ?

                                  Interested in AI ? www.idiap.ch
                                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                  • SGaistS SGaist

                                    Did you nuke the build folder after these changes to ensure you start from a clean state ?

                                    T Offline
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                                    Tobias83
                                    wrote on last edited by
                                    #19

                                    @SGaist I moved the build directory:

                                    mv build-HardCore-Desktop-Debug/ build-HardCore-Desktop-Debug_old/
                                    

                                    Than I executed cmake file again, but I can't build the project and the project is not structered anymore. There is only a file list at the left site. The error in German language is:
                                    :-1: Fehler: CMake-Konfiguration "Debug wurde nicht gefunden. Verfügbare Konfigurationen: "".
                                    Stellen Sie sicher, dass der Wert der CMAKE_BUILD_TYPE-Variable derselbe wie der des "Build-Typ"-Felds ist.

                                    ... cmake configuration Debug was not found. Ensure that the variable value CMAKE_BUILD_TYPE is the same as that of the Build Type area.

                                    jsulmJ 1 Reply Last reply
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                                    • T Tobias83

                                      @SGaist I moved the build directory:

                                      mv build-HardCore-Desktop-Debug/ build-HardCore-Desktop-Debug_old/
                                      

                                      Than I executed cmake file again, but I can't build the project and the project is not structered anymore. There is only a file list at the left site. The error in German language is:
                                      :-1: Fehler: CMake-Konfiguration "Debug wurde nicht gefunden. Verfügbare Konfigurationen: "".
                                      Stellen Sie sicher, dass der Wert der CMAKE_BUILD_TYPE-Variable derselbe wie der des "Build-Typ"-Felds ist.

                                      ... cmake configuration Debug was not found. Ensure that the variable value CMAKE_BUILD_TYPE is the same as that of the Build Type area.

                                      jsulmJ Offline
                                      jsulmJ Offline
                                      jsulm
                                      Lifetime Qt Champion
                                      wrote on last edited by
                                      #20

                                      @Tobias83 Did you try to build in release mode?

                                      https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                      • jsulmJ jsulm

                                        @Tobias83 Did you try to build in release mode?

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                                        Tobias83
                                        wrote on last edited by
                                        #21

                                        @jsulm In release mode, there is also the error unknown component for the QtGraphs prompts.

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                                        • SGaistS Offline
                                          SGaistS Offline
                                          SGaist
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #22

                                          Even if it was already done once:

                                          • Exit Qt Creator
                                          • Delete the CMakeLists.txt.user file from your sources
                                          • Nuke all build folders
                                          • Start Qt Creator and reconfigure your project

                                          Interested in AI ? www.idiap.ch
                                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                          T 1 Reply Last reply
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