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QtCreator errors with QtGraphs QML

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  • S Offline
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    SGaist
    Lifetime Qt Champion
    wrote on 28 Mar 2025, 19:51 last edited by
    #2

    Hi,

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

    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 28 Mar 2025, 22:13
    0
    • S SGaist
      28 Mar 2025, 19:51

      Hi,

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

      T Offline
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      Tobias83
      wrote on 28 Mar 2025, 22:13 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

      J 1 Reply Last reply 31 Mar 2025, 18:58
      0
      • S Offline
        S Offline
        SGaist
        Lifetime Qt Champion
        wrote on 29 Mar 2025, 19:56 last edited by
        #4

        Can you share a minimal compilable example that shows this ?

        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 31 Mar 2025, 16:12
        0
        • S SGaist
          29 Mar 2025, 19:56

          Can you share a minimal compilable example that shows this ?

          T Offline
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          Tobias83
          wrote on 31 Mar 2025, 16:12 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

          S 1 Reply Last reply 31 Mar 2025, 19:07
          0
          • T Tobias83
            28 Mar 2025, 22:13

            @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

            J Offline
            J Offline
            JoeCFD
            wrote on 31 Mar 2025, 18:58 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 3 Apr 2025, 18:48
            0
            • T Tobias83
              31 Mar 2025, 16:12

              @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

              S Offline
              S Offline
              SGaist
              Lifetime Qt Champion
              wrote on 31 Mar 2025, 19:07 last edited by
              #7

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

              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 3 Apr 2025, 18:53
              0
              • J JoeCFD
                31 Mar 2025, 18:58

                @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 3 Apr 2025, 18:48 last edited by
                #8

                @JoeCFD I have

                import QtGraphs 2.12
                
                1 Reply Last reply
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                • S SGaist
                  31 Mar 2025, 19:07

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

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                  Tobias83
                  wrote on 3 Apr 2025, 18:53 last edited by Tobias83 4 Mar 2025, 18:55
                  #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

                  1 Reply Last reply
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                  • S Offline
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                    SGaist
                    Lifetime Qt Champion
                    wrote on 3 Apr 2025, 19:34 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

                    T 1 Reply Last reply 3 Apr 2025, 20:50
                    0
                    • S SGaist
                      3 Apr 2025, 19:34

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

                      T Offline
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                      Tobias83
                      wrote on 3 Apr 2025, 20:50 last edited by Tobias83 4 Mar 2025, 20:51
                      #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 ...

                      1 Reply Last reply
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                      • S Offline
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                        SGaist
                        Lifetime Qt Champion
                        wrote on 5 Apr 2025, 19:16 last edited by
                        #12

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

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

                        T 1 Reply Last reply 6 Apr 2025, 21:31
                        0
                        • S SGaist
                          5 Apr 2025, 19:16

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

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                          Tobias83
                          wrote on 6 Apr 2025, 21:31 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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                            SGaist
                            Lifetime Qt Champion
                            wrote on 8 Apr 2025, 06:35 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

                            T 1 Reply Last reply 8 Apr 2025, 14:23
                            0
                            • S SGaist
                              8 Apr 2025, 06:35

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

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                              Tobias83
                              wrote on 8 Apr 2025, 14:23 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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                              • S Offline
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                                SGaist
                                Lifetime Qt Champion
                                wrote on 8 Apr 2025, 19:15 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 9 Apr 2025, 14:06
                                0
                                • S SGaist
                                  8 Apr 2025, 19:15

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

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                                  Tobias83
                                  wrote on 9 Apr 2025, 14:06 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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                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on 9 Apr 2025, 17:59 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

                                    T 1 Reply Last reply 9 Apr 2025, 19:24
                                    0
                                    • S SGaist
                                      9 Apr 2025, 17:59

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

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                                      Tobias83
                                      wrote on 9 Apr 2025, 19:24 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.

                                      J 1 Reply Last reply 10 Apr 2025, 07:38
                                      0
                                      • T Tobias83
                                        9 Apr 2025, 19:24

                                        @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.

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                                        jsulm
                                        Lifetime Qt Champion
                                        wrote on 10 Apr 2025, 07:38 last edited by
                                        #20

                                        @Tobias83 Did you try to build in release mode?

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

                                        T 1 Reply Last reply 10 Apr 2025, 18:13
                                        0
                                        • J jsulm
                                          10 Apr 2025, 07:38

                                          @Tobias83 Did you try to build in release mode?

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                                          Tobias83
                                          wrote on 10 Apr 2025, 18:13 last edited by
                                          #21

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

                                          1 Reply Last reply
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