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libwireshark.dll load problem

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  • jsulmJ jsulm

    @lee64456546 Is your app 32bit or 64bit?
    Do you use same compiler which was used to build the DLL?

    L Offline
    L Offline
    lee64456546
    wrote on last edited by
    #4

    @jsulm and yes, my app is 32bit.

    jsulmJ 1 Reply Last reply
    0
    • L lee64456546

      @jsulm and yes, my app is 32bit.

      jsulmJ Offline
      jsulmJ Offline
      jsulm
      Lifetime Qt Champion
      wrote on last edited by jsulm
      #5

      @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?

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

      L 2 Replies Last reply
      2
      • 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 "\".

              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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