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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
    #48

    @SGaist The dlls I've used are C:Program Files/MYSQL/MySQL Server 8.0/lib

    0_1551558942027_Annotation 2019-03-02 223046.jpg

    If you talk about other dlls please correct me

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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
        1
        • 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

                    H 1 Reply Last reply
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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.

                        1 Reply Last reply
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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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