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Unload Qlibrary

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  • ? A Former User

    @Zoptune Why does it crash? What does the debugger say?

    ZoptuneZ Offline
    ZoptuneZ Offline
    Zoptune
    wrote on last edited by
    #6

    @Wieland
    When the machine is not detected, my app is useless. So i just close it.
    Closing my app call the unload function in an object destructor.
    Then i quit and wait the thread where the DLL was used and stop the app.

    But when all windows are closed and app seems to be stoped, i don't have any message like :

    PATH\debug\test.exe exited with code 0

    4 or 5 seconds later i have the message :

    PATH\debug\test.exe crashed

    1 Reply Last reply
    0
    • mrjjM mrjj

      @Zoptune
      Ok. it sounds like the DLL does something in init() when it fails.
      You need to look at that code to know.

      ZoptuneZ Offline
      ZoptuneZ Offline
      Zoptune
      wrote on last edited by
      #7

      @mrjj
      I haven't got the code of the DLL ><

      mrjjM 1 Reply Last reply
      0
      • ZoptuneZ Zoptune

        @mrjj
        I haven't got the code of the DLL ><

        mrjjM Offline
        mrjjM Offline
        mrjj
        Lifetime Qt Champion
        wrote on last edited by
        #8

        @Zoptune
        Oh. It seems that on fail (-1), it might spawn something or
        be in funny state so it sounds like its still active
        when App is closed.

        What DLL is it?

        ZoptuneZ 1 Reply Last reply
        1
        • mrjjM mrjj

          @Zoptune
          Oh. It seems that on fail (-1), it might spawn something or
          be in funny state so it sounds like its still active
          when App is closed.

          What DLL is it?

          ZoptuneZ Offline
          ZoptuneZ Offline
          Zoptune
          wrote on last edited by
          #9

          @mrjj
          It's a DLL provided by the manufacturer of the machine.
          They have their own software to control the machine but this software doesn't match my company needs.
          So they provided us the DLL and the documentation and i'm developing our soft.

          1 Reply Last reply
          0
          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #10

            Hi,

            Out of curiosity, why not link your application to that library ? Or do you only got the .dll file ?

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

            ZoptuneZ 1 Reply Last reply
            0
            • SGaistS SGaist

              Hi,

              Out of curiosity, why not link your application to that library ? Or do you only got the .dll file ?

              ZoptuneZ Offline
              ZoptuneZ Offline
              Zoptune
              wrote on last edited by
              #11

              @SGaist
              Yes i only got the DLL file ><

              1 Reply Last reply
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              • m.sueM Offline
                m.sueM Offline
                m.sue
                wrote on last edited by
                #12

                Hi,
                they gave you the DLL and the documentation. So you could ask them about the error.
                -Michael.

                ZoptuneZ 1 Reply Last reply
                0
                • m.sueM m.sue

                  Hi,
                  they gave you the DLL and the documentation. So you could ask them about the error.
                  -Michael.

                  ZoptuneZ Offline
                  ZoptuneZ Offline
                  Zoptune
                  wrote on last edited by
                  #13

                  @m.sue
                  I send them an email.

                  I created this topic to ask if it was possible that the problem came from my side.

                  mrjjM 1 Reply Last reply
                  0
                  • ZoptuneZ Zoptune

                    @m.sue
                    I send them an email.

                    I created this topic to ask if it was possible that the problem came from my side.

                    mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by
                    #14

                    @Zoptune
                    If you do not touch any function in the DLL after you call init() and it return -1, then
                    its not likely its in your code.
                    Also, would be fast to make small test project and test this.

                    1 Reply Last reply
                    1
                    • ZoptuneZ Offline
                      ZoptuneZ Offline
                      Zoptune
                      wrote on last edited by
                      #15

                      Hi,

                      I made several tests and i'm sure that the problem comes from the DLL.

                      Thx all, and sorry to have wasted your time ^^'

                      1 Reply Last reply
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