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libwireshark.dll load problem

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  • jsulmJ jsulm

    @lee64456546 "the dll is the one provided by Wireshark.exe" - that's clear.
    You need to find out which compiler was used to build this DLL.
    What compiler do you use?

    L Offline
    L Offline
    lee64456546
    wrote on last edited by
    #7

    @jsulm is there a way i can find out which compiler the wireshark used ?

    1 Reply Last reply
    0
    • L lee64456546

      I am using qt to load libwireshark.dll (32 bit), but i always load failed. The failure info is
      0_1552378458598_2d46b507-31ec-40f2-bfac-b4d466d45ada-image.png

      I use these codes to load the dll file.
      //load dll
      QLibrary hdll(DLL_NAME);
      if(hdll.load())
      {
      qDebug() << "Load dll success";
      }
      else
      {
      QMessageBox::warning(this, "Dll Error", hdll.errorString());
      }

      Can anyone help? Thanks.

      CP71C Offline
      CP71C Offline
      CP71
      wrote on last edited by CP71
      #8

      @lee64456546
      HI.
      I know, it will seem a stupid question, did you check file exists and path is correct?
      "The specific module could not be found" seems file is not exist or directory is wrong

      Kent-DorfmanK L 2 Replies Last reply
      0
      • CP71C CP71

        @lee64456546
        HI.
        I know, it will seem a stupid question, did you check file exists and path is correct?
        "The specific module could not be found" seems file is not exist or directory is wrong

        Kent-DorfmanK Offline
        Kent-DorfmanK Offline
        Kent-Dorfman
        wrote on last edited by Kent-Dorfman
        #9

        @CP71 Also, along those lines, I see forward slashes in the directory path. I don't remember if Qt is smart enough to handle UNIX path separators on windoze...I only ever code in NIX so it's not something I ever run into. The OP didn't post where he initializes the name of the dll. He may have used "/" instead of "\".

        If you meet the AI on the road, kill it.

        CP71C 1 Reply Last reply
        1
        • Christian EhrlicherC Offline
          Christian EhrlicherC Offline
          Christian Ehrlicher
          Lifetime Qt Champion
          wrote on last edited by
          #10

          @Kent-Dorfman said in libwireshark.dll load problem:

          He may have used "/" instead of "".

          This does not matter as long as Qt functions are used... this is what's Qt is made for.

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

          1 Reply Last reply
          3
          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #11

            Hi,

            What version of Wireshark did you download ?

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

            L 1 Reply Last reply
            0
            • aha_1980A Offline
              aha_1980A Offline
              aha_1980
              Lifetime Qt Champion
              wrote on last edited by
              #12

              to add to my mates, this error can also mean, that a dependency of the DLL you want to load is missing. Please check with Dependency Walker.

              Regards

              Qt has to stay free or it will die.

              L 1 Reply Last reply
              2
              • SGaistS SGaist

                Hi,

                What version of Wireshark did you download ?

                L Offline
                L Offline
                lee64456546
                wrote on last edited by
                #13

                @SGaist 0_1552441474568_e9dd422a-3669-457b-a509-2294344d0551-image.png

                1 Reply Last reply
                0
                • CP71C CP71

                  @lee64456546
                  HI.
                  I know, it will seem a stupid question, did you check file exists and path is correct?
                  "The specific module could not be found" seems file is not exist or directory is wrong

                  L Offline
                  L Offline
                  lee64456546
                  wrote on last edited by
                  #14

                  @CP71 I checked, the file exists and the path is correct.

                  jsulmJ 1 Reply Last reply
                  1
                  • aha_1980A aha_1980

                    to add to my mates, this error can also mean, that a dependency of the DLL you want to load is missing. Please check with Dependency Walker.

                    Regards

                    L Offline
                    L Offline
                    lee64456546
                    wrote on last edited by
                    #15

                    @aha_1980 I thought about this issue before, so the dll path i am using is actually where the wireshark is installed, all the dll files are there. If some dlls are missing, wouldn't wireshark fail to start ?

                    CP71C 1 Reply Last reply
                    0
                    • L lee64456546

                      @CP71 I checked, the file exists and the path is correct.

                      jsulmJ Offline
                      jsulmJ Offline
                      jsulm
                      Lifetime Qt Champion
                      wrote on last edited by
                      #16

                      @lee64456546 According to this https://www.wireshark.org/docs/wsdg_html_chunked/ChIntroAutomated.html Visual Studio 2013 is used.

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

                      L 1 Reply Last reply
                      1
                      • L lee64456546

                        @aha_1980 I thought about this issue before, so the dll path i am using is actually where the wireshark is installed, all the dll files are there. If some dlls are missing, wouldn't wireshark fail to start ?

                        CP71C Offline
                        CP71C Offline
                        CP71
                        wrote on last edited by
                        #17

                        @lee64456546 I don’t know libwireshark.dll, but if it only is a modulo for external tools and Wireshark doesn't use it is possible Wireshark runs well, even though dependency is missed.

                        1 Reply Last reply
                        1
                        • Kent-DorfmanK Kent-Dorfman

                          @CP71 Also, along those lines, I see forward slashes in the directory path. I don't remember if Qt is smart enough to handle UNIX path separators on windoze...I only ever code in NIX so it's not something I ever run into. The OP didn't post where he initializes the name of the dll. He may have used "/" instead of "\".

                          CP71C Offline
                          CP71C Offline
                          CP71
                          wrote on last edited by
                          #18

                          @Kent-Dorfman
                          I can confirm Qt works well if you use / in folder name in Windows, but I'm being honest, I hasn’t never loaded a library with Qt.

                          1 Reply Last reply
                          1
                          • jsulmJ jsulm

                            @lee64456546 According to this https://www.wireshark.org/docs/wsdg_html_chunked/ChIntroAutomated.html Visual Studio 2013 is used.

                            L Offline
                            L Offline
                            lee64456546
                            wrote on last edited by
                            #19

                            @jsulm maybe msvc2013 can help ?

                            CP71C 2 Replies Last reply
                            0
                            • L lee64456546

                              @jsulm maybe msvc2013 can help ?

                              CP71C Offline
                              CP71C Offline
                              CP71
                              wrote on last edited by
                              #20

                              @lee64456546
                              Hi,
                              I have tried your code and have same problem.
                              I think is a dependencies problem.

                              0_1552642378888_408eace4-3bbe-494f-a94a-01bbb485a466-image.png

                              1 Reply Last reply
                              0
                              • L lee64456546

                                @jsulm maybe msvc2013 can help ?

                                CP71C Offline
                                CP71C Offline
                                CP71
                                wrote on last edited by
                                #21

                                @lee64456546
                                I have found out this link, it is old but maybe is current yet:

                                https://wireshark-dev.wireshark.narkive.com/eKc7x7DR/problem-loading-custom-dll-with-standard-wireshark-distribution

                                1 Reply Last reply
                                2

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