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Correct syntax to register object reference using qRegisterMetaType?

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  • Christian EhrlicherC Christian Ehrlicher

    @SPlatten said in Correct syntax to register object reference using qRegisterMetaType?:

    not for the ones where I've used Qt::DirectConnection

    Then it's useless since then Qt::AutoConnection evaluates to Qt::DirectConnection. Specifying a connection type is not needed in most of the cases.

    SPlattenS Offline
    SPlattenS Offline
    SPlatten
    wrote on last edited by
    #22

    @Christian-Ehrlicher , Well that's the only change I'm implemented and now there is no message, so perhaps this is something that needs looking at?

    Kind Regards,
    Sy

    SGaistS Christian EhrlicherC kshegunovK 3 Replies Last reply
    0
    • SPlattenS SPlatten

      @Christian-Ehrlicher , Well that's the only change I'm implemented and now there is no message, so perhaps this is something that needs looking at?

      SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #23

      @SPlatten said in Correct syntax to register object reference using qRegisterMetaType?:

      @Christian-Ehrlicher , Well that's the only change I'm implemented and now there is no message, so perhaps this is something that needs looking at?

      For that a minimal compilable example would be needed.

      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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      • SPlattenS SPlatten

        @Christian-Ehrlicher , Well that's the only change I'm implemented and now there is no message, so perhaps this is something that needs looking at?

        Christian EhrlicherC Offline
        Christian EhrlicherC Offline
        Christian Ehrlicher
        Lifetime Qt Champion
        wrote on last edited by
        #24

        @SPlatten said in Correct syntax to register object reference using qRegisterMetaType?:

        so perhaps this is something that needs looking at?

        This means that there is a thread context switch somewhere even you tell us it isn't.

        Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
        Visit the Qt Academy at https://academy.qt.io/catalog

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        • SPlattenS SPlatten

          @Christian-Ehrlicher , Well that's the only change I'm implemented and now there is no message, so perhaps this is something that needs looking at?

          kshegunovK Offline
          kshegunovK Offline
          kshegunov
          Moderators
          wrote on last edited by
          #25

          @SPlatten said in Correct syntax to register object reference using qRegisterMetaType?:

          @Christian-Ehrlicher , Well that's the only change I'm implemented and now there is no message, so perhaps this is something that needs looking at?

          Run with QT_FATAL_WARNINGS=1 as an environment variable and extract the stack trace, then you will have leveraged your debugger to show you exactly where you're passing a reference between threads.

          Read and abide by the Qt Code of Conduct

          SPlattenS 1 Reply Last reply
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          • kshegunovK kshegunov

            @SPlatten said in Correct syntax to register object reference using qRegisterMetaType?:

            @Christian-Ehrlicher , Well that's the only change I'm implemented and now there is no message, so perhaps this is something that needs looking at?

            Run with QT_FATAL_WARNINGS=1 as an environment variable and extract the stack trace, then you will have leveraged your debugger to show you exactly where you're passing a reference between threads.

            SPlattenS Offline
            SPlattenS Offline
            SPlatten
            wrote on last edited by
            #26

            @kshegunov said in Correct syntax to register object reference using qRegisterMetaType?:

            QT_FATAL_WARNINGS=1

            I've opened both .pro files and added that line, then cleaned and rebuilt, the applications have been running for several minutes, nothing to report, no issues.

            Kind Regards,
            Sy

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            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #27

              It's an environnement variable, not a define.

              You have to set it in the Run tab of the Project panel.

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

              SPlattenS 1 Reply Last reply
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              • SGaistS SGaist

                It's an environnement variable, not a define.

                You have to set it in the Run tab of the Project panel.

                SPlattenS Offline
                SPlattenS Offline
                SPlatten
                wrote on last edited by
                #28

                @SGaist , Yes, just googled it and then added as environment variable:

                export QT_FATAL_WARNINGS=1
                

                Then restarted, same, not seeing anything additional.

                Kind Regards,
                Sy

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                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #29

                  Restarted what ?
                  How are you currently running your application ?

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

                  SPlattenS 1 Reply Last reply
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                  • SGaistS SGaist

                    Restarted what ?
                    How are you currently running your application ?

                    SPlattenS Offline
                    SPlattenS Offline
                    SPlatten
                    wrote on last edited by
                    #30

                    @SGaist , I launch the processes with Qt Creator in debug mode, using two separate instances of Qt Creator.

                    Kind Regards,
                    Sy

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                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by SGaist
                      #31

                      Did you check the environment variables in the Run part of the Project Panel to ensure it's properly set ?

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

                      SPlattenS 1 Reply Last reply
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                      • SGaistS SGaist

                        Did you check the environment variables in the Run part of the Project Panel to ensure it's properly set ?

                        SPlattenS Offline
                        SPlattenS Offline
                        SPlatten
                        wrote on last edited by
                        #32

                        @SGaist , I checked in a terminal, I don't know how or where to "Run part of the Project Panel" ?

                        Kind Regards,
                        Sy

                        jsulmJ 1 Reply Last reply
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                        • SPlattenS SPlatten

                          @SGaist , I checked in a terminal, I don't know how or where to "Run part of the Project Panel" ?

                          jsulmJ Online
                          jsulmJ Online
                          jsulm
                          Lifetime Qt Champion
                          wrote on last edited by jsulm
                          #33

                          @SPlatten said in Correct syntax to register object reference using qRegisterMetaType?:

                          I don't know how or where to "Run part of the Project Panel" ?

                          Easy to find actually.
                          Left pane: Projects -> Build & Run -> Run...

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

                          SPlattenS 1 Reply Last reply
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                          • jsulmJ jsulm

                            @SPlatten said in Correct syntax to register object reference using qRegisterMetaType?:

                            I don't know how or where to "Run part of the Project Panel" ?

                            Easy to find actually.
                            Left pane: Projects -> Build & Run -> Run...

                            SPlattenS Offline
                            SPlattenS Offline
                            SPlatten
                            wrote on last edited by
                            #34

                            @jsulm , thank you, added it now, building now.

                            Kind Regards,
                            Sy

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