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Error QMYSQL Plugin on Windows

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  • SGaistS SGaist

    Where exactly are the dlls matching the library you used to build the plugin ?

    S Offline
    S Offline
    Stelian
    wrote on last edited by
    #49

    @SGaist I would have to use dlls from this path C:Program Files (x86)/MySQL/MySQL Connector C 6.1/lib

    0_1551561982860_Annotation 2019-03-02 232603.jpg

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #50

      @Stelian said in Error QMYSQL Plugin on Windows:

      C:Program Files/MYSQL/MySQL Server 8.0/lib

      Then that's the one you should be having in your PATH environment variable.

      One other thing you can use is Dependency Walker. Use it on your Qt MySQL plugin. Check that it can find the MySQL dll.

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

      S 1 Reply Last reply
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      • SGaistS SGaist

        @Stelian said in Error QMYSQL Plugin on Windows:

        C:Program Files/MYSQL/MySQL Server 8.0/lib

        Then that's the one you should be having in your PATH environment variable.

        One other thing you can use is Dependency Walker. Use it on your Qt MySQL plugin. Check that it can find the MySQL dll.

        S Offline
        S Offline
        Stelian
        wrote on last edited by Stelian
        #51

        @SGaist yes, I have that path in my path environment variable.
        I have never used Dependency Walker.
        What do I have to do ?

        JonBJ 1 Reply Last reply
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        • S Stelian

          @SGaist yes, I have that path in my path environment variable.
          I have never used Dependency Walker.
          What do I have to do ?

          JonBJ Offline
          JonBJ Offline
          JonB
          wrote on last edited by
          #52

          @Stelian
          Go to http://www.dependencywalker.com/, read, and download the appropriate for your architecture. You just point it at a .exe, or in this case the .dll you are having trouble with. Look through its output window, to see whether there is another .dll which is required but cannot be found, and report back.

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          • S Offline
            S Offline
            Stelian
            wrote on last edited by
            #53

            0_1551713007838_Annotation 2019-03-03 231800.jpg

            0_1551713024334_Annotation 2019-03-03 231830.jpg

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            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #54

              If you close the yellow branches does the MySQL dll appear as good or not ?

              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

                If you close the yellow branches does the MySQL dll appear as good or not ?

                S Offline
                S Offline
                Stelian
                wrote on last edited by
                #55

                @SGaist I don't have an option to close the yellow branches
                0_1551723782285_Annotation 2019-03-04 202230.jpg

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                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #56

                  I meant: close the branches where all these warnings can be seen. Just take care to verify that you're not hiding a bigger issue while doing that.

                  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

                    I meant: close the branches where all these warnings can be seen. Just take care to verify that you're not hiding a bigger issue while doing that.

                    H Offline
                    H Offline
                    Hitek
                    wrote on last edited by
                    #57

                    @SGaist i got the same issue.
                    This is my dependency walker screen. LIBMYSQL.DLL looks good but i dont know why i still got this error "QSqlDatabase: QMYSQL driver not loaded".Capture.PNG image url)

                    aha_1980A 1 Reply Last reply
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                    • H Hitek

                      @SGaist i got the same issue.
                      This is my dependency walker screen. LIBMYSQL.DLL looks good but i dont know why i still got this error "QSqlDatabase: QMYSQL driver not loaded".Capture.PNG image url)

                      aha_1980A Offline
                      aha_1980A Offline
                      aha_1980
                      Lifetime Qt Champion
                      wrote on last edited by
                      #58

                      Hi @Hitek,

                      This libmysql.dll is a 64 bit library. Are you using a 64 bit or 32 bit Qt version for your program?

                      Regards

                      Qt has to stay free or it will die.

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                      • Christian EhrlicherC Offline
                        Christian EhrlicherC Offline
                        Christian Ehrlicher
                        Lifetime Qt Champion
                        wrote on last edited by
                        #59

                        And is the library in the correct folder?

                        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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