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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
    #6

    @jsulm I use msvc2010 to compile my project, but i don't know which compiler was used to build the dll.

    1 Reply Last reply
    0
    • 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 "\".

          The dystopian literature that served as a warning in my youth has become an instruction manual in my elder years.

          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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