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how to add library(qmqtt.h) in qmqtt client for windows

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  • J jsulm
    30 Jun 2017, 04:33

    @shravani In QtCreator it should work. Use http://www.dependencywalker.com to see what is missing.
    Besides the lib file - do you have the DLL? Lib file is needed for linking, but DLL is needed at runtime.
    Also can you show how you added the lib to pro file?

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    shravani
    wrote on 30 Jun 2017, 05:06 last edited by
    #31

    @jsulm
    in this src/ qmqtt.h,.. and .lib files are there.so added that path.

    INCLUDEPATH += C:\Qt\qmqtt-master\src
    LIBS += -LC:\Qt\qmqtt-master\src -lqmqtt

    J 1 Reply Last reply 30 Jun 2017, 05:08
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    • S shravani
      30 Jun 2017, 05:06

      @jsulm
      in this src/ qmqtt.h,.. and .lib files are there.so added that path.

      INCLUDEPATH += C:\Qt\qmqtt-master\src
      LIBS += -LC:\Qt\qmqtt-master\src -lqmqtt

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      jsulm
      Lifetime Qt Champion
      wrote on 30 Jun 2017, 05:08 last edited by
      #32

      @shravani
      Again: you need the DLL file to be able to execute your app. Where is qmqtt.dll (or libqmqtt.dll)?

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

      S 1 Reply Last reply 30 Jun 2017, 05:11
      1
      • J jsulm
        30 Jun 2017, 05:08

        @shravani
        Again: you need the DLL file to be able to execute your app. Where is qmqtt.dll (or libqmqtt.dll)?

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        shravani
        wrote on 30 Jun 2017, 05:11 last edited by shravani
        #33

        @jsulm
        it is inside src only.do i need to add anywhere else again?
        after building library it created in /bin so i copied from there to src folder

        J 1 Reply Last reply 30 Jun 2017, 05:27
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        • S shravani
          30 Jun 2017, 05:11

          @jsulm
          it is inside src only.do i need to add anywhere else again?
          after building library it created in /bin so i copied from there to src folder

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          jsulm
          Lifetime Qt Champion
          wrote on 30 Jun 2017, 05:27 last edited by
          #34

          @shravani The DLL must be in a directory where the operating system is looking for shared libraries when loading an app. Fastest way is to copy it to the build directory of your app (where your executable is).

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

          S 2 Replies Last reply 30 Jun 2017, 05:28
          2
          • J jsulm
            30 Jun 2017, 05:27

            @shravani The DLL must be in a directory where the operating system is looking for shared libraries when loading an app. Fastest way is to copy it to the build directory of your app (where your executable is).

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            shravani
            wrote on 30 Jun 2017, 05:28 last edited by
            #35
            This post is deleted!
            1 Reply Last reply
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            • J jsulm
              30 Jun 2017, 05:27

              @shravani The DLL must be in a directory where the operating system is looking for shared libraries when loading an app. Fastest way is to copy it to the build directory of your app (where your executable is).

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              shravani
              wrote on 2 Jul 2017, 06:24 last edited by
              #36

              @jsulm
              i added all dlls but now getting this error
              0_1498976658348_error.png

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                SGaist
                Lifetime Qt Champion
                wrote on 2 Jul 2017, 20:41 last edited by
                #37

                Hi,

                You can't start an application like that from explorer, you first have to follow the same steps you would before deploying your application on another computer.

                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 3 Jul 2017, 00:51
                0
                • S SGaist
                  2 Jul 2017, 20:41

                  Hi,

                  You can't start an application like that from explorer, you first have to follow the same steps you would before deploying your application on another computer.

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                  shravani
                  wrote on 3 Jul 2017, 00:51 last edited by shravani 7 Mar 2017, 03:27
                  #38

                  @SGaist
                  In Qt creator also I'm getting same error after adding ucrtbased.dll to debug folder.
                  i tried executing examples given in qt but getting same error.
                  recently i installed this qt 5.8.1 msvc2015 new version because in qt 5.0 it(mqtt) is not working.

                  0_1499045791448_error2.png 0_1499045799223_path.png

                  J 1 Reply Last reply 3 Jul 2017, 04:30
                  0
                  • S shravani
                    3 Jul 2017, 00:51

                    @SGaist
                    In Qt creator also I'm getting same error after adding ucrtbased.dll to debug folder.
                    i tried executing examples given in qt but getting same error.
                    recently i installed this qt 5.8.1 msvc2015 new version because in qt 5.0 it(mqtt) is not working.

                    0_1499045791448_error2.png 0_1499045799223_path.png

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                    jsulm
                    Lifetime Qt Champion
                    wrote on 3 Jul 2017, 04:30 last edited by
                    #39

                    @shravani Which DLLs exactly did you copy and from where? No need to copy ucrtbased.dll when starting from QtCreator.

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

                    S 1 Reply Last reply 3 Jul 2017, 04:41
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                    • J jsulm
                      3 Jul 2017, 04:30

                      @shravani Which DLLs exactly did you copy and from where? No need to copy ucrtbased.dll when starting from QtCreator.

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                      shravani
                      wrote on 3 Jul 2017, 04:41 last edited by shravani 7 Mar 2017, 04:42
                      #40

                      @jsulm
                      but while running it showed ucrtbased.dll is missing)DLL not found as above post)

                      J 1 Reply Last reply 3 Jul 2017, 04:42
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                      • S shravani
                        3 Jul 2017, 04:41

                        @jsulm
                        but while running it showed ucrtbased.dll is missing)DLL not found as above post)

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                        jsulm
                        Lifetime Qt Champion
                        wrote on 3 Jul 2017, 04:42 last edited by
                        #41

                        @shravani While running from QtCreator?

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

                        S 1 Reply Last reply 3 Jul 2017, 04:43
                        0
                        • J jsulm
                          3 Jul 2017, 04:42

                          @shravani While running from QtCreator?

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                          shravani
                          wrote on 3 Jul 2017, 04:43 last edited by shravani 7 Mar 2017, 04:44
                          #42

                          @jsulm
                          while running from qt creator(DLL not found)

                          0_1499057065092_Capture.PNG
                          so i checked from outside qt to see which dll missing.so i added that

                          J 1 Reply Last reply 3 Jul 2017, 04:46
                          0
                          • S shravani
                            3 Jul 2017, 04:43

                            @jsulm
                            while running from qt creator(DLL not found)

                            0_1499057065092_Capture.PNG
                            so i checked from outside qt to see which dll missing.so i added that

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                            jsulm
                            Lifetime Qt Champion
                            wrote on 3 Jul 2017, 04:46 last edited by
                            #43

                            @shravani Running outside from QtCreator is different. You actually only need to copy your qmqtt.dll if you want to run from QtCreator. If you want to run outside of QtCreator you need to deploy your app as @SGaist already said. In one of my previous posts in this thread I posted a link to a side where you can read how to deploy your app on Windows.

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

                            S 1 Reply Last reply 3 Jul 2017, 04:52
                            0
                            • J jsulm
                              3 Jul 2017, 04:46

                              @shravani Running outside from QtCreator is different. You actually only need to copy your qmqtt.dll if you want to run from QtCreator. If you want to run outside of QtCreator you need to deploy your app as @SGaist already said. In one of my previous posts in this thread I posted a link to a side where you can read how to deploy your app on Windows.

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                              shravani
                              wrote on 3 Jul 2017, 04:52 last edited by shravani 7 Mar 2017, 04:52
                              #44

                              @jsulm
                              i copied qmqtt.dll but still got that error (DLL not found).do i need to add anything else?

                              J 1 Reply Last reply 3 Jul 2017, 04:53
                              0
                              • S shravani
                                3 Jul 2017, 04:52

                                @jsulm
                                i copied qmqtt.dll but still got that error (DLL not found).do i need to add anything else?

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                                jsulm
                                Lifetime Qt Champion
                                wrote on 3 Jul 2017, 04:53 last edited by
                                #45

                                @shravani After adding qmqtt.dll which DLL is missing?

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

                                S 1 Reply Last reply 3 Jul 2017, 04:55
                                0
                                • J jsulm
                                  3 Jul 2017, 04:53

                                  @shravani After adding qmqtt.dll which DLL is missing?

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                                  shravani
                                  wrote on 3 Jul 2017, 04:55 last edited by
                                  #46

                                  @jsulm
                                  it was just showing the above error.i cannot find which dll is missing

                                  J 1 Reply Last reply 3 Jul 2017, 04:58
                                  0
                                  • S shravani
                                    3 Jul 2017, 04:55

                                    @jsulm
                                    it was just showing the above error.i cannot find which dll is missing

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                                    jsulm
                                    Lifetime Qt Champion
                                    wrote on 3 Jul 2017, 04:58 last edited by
                                    #47

                                    @shravani When you built qmqtt.dll were any other DLLs created in the same directory? Did you try to find out what is missing using http://www.dependencywalker.com ?

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

                                    S 1 Reply Last reply 3 Jul 2017, 04:59
                                    0
                                    • J jsulm
                                      3 Jul 2017, 04:58

                                      @shravani When you built qmqtt.dll were any other DLLs created in the same directory? Did you try to find out what is missing using http://www.dependencywalker.com ?

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                                      shravani
                                      wrote on 3 Jul 2017, 04:59 last edited by
                                      #48

                                      @jsulm
                                      only 2 dll files(qmqtt.dll,qmqttd.dll) created and i copied both.

                                      J 1 Reply Last reply 3 Jul 2017, 05:00
                                      0
                                      • S shravani
                                        3 Jul 2017, 04:59

                                        @jsulm
                                        only 2 dll files(qmqtt.dll,qmqttd.dll) created and i copied both.

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                                        jsulm
                                        Lifetime Qt Champion
                                        wrote on 3 Jul 2017, 05:00 last edited by
                                        #49

                                        @shravani Then you should deploy your app using Qt Windows Deployment Tool and see which DLL will end up in your deployment directory.

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

                                        S 2 Replies Last reply 4 Jul 2017, 04:10
                                        0
                                        • J jsulm
                                          3 Jul 2017, 05:00

                                          @shravani Then you should deploy your app using Qt Windows Deployment Tool and see which DLL will end up in your deployment directory.

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                                          shravani
                                          wrote on 4 Jul 2017, 04:10 last edited by
                                          #50

                                          @jsulm
                                          i changed build to release and its working now.

                                          1 Reply Last reply
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