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

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  • jsulmJ jsulm

    @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 last edited by
    #36

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

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on 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

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      • SGaistS SGaist

        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 last edited by shravani
        #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

        jsulmJ 1 Reply Last reply
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        • S shravani

          @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

          jsulmJ Offline
          jsulmJ Offline
          jsulm
          Lifetime Qt Champion
          wrote on 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

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          • jsulmJ jsulm

            @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 last edited by shravani
            #40

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

            jsulmJ 1 Reply Last reply
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            • S shravani

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

              jsulmJ Offline
              jsulmJ Offline
              jsulm
              Lifetime Qt Champion
              wrote on last edited by
              #41

              @shravani While running from QtCreator?

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

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              • jsulmJ jsulm

                @shravani While running from QtCreator?

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                shravani
                wrote on last edited by shravani
                #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

                jsulmJ 1 Reply Last reply
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                • S shravani

                  @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

                  jsulmJ Offline
                  jsulmJ Offline
                  jsulm
                  Lifetime Qt Champion
                  wrote on 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

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                  • jsulmJ jsulm

                    @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 last edited by shravani
                    #44

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

                    jsulmJ 1 Reply Last reply
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                    • S shravani

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

                      jsulmJ Offline
                      jsulmJ Offline
                      jsulm
                      Lifetime Qt Champion
                      wrote on last edited by
                      #45

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

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

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                      • jsulmJ jsulm

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

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                        shravani
                        wrote on last edited by
                        #46

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

                        jsulmJ 1 Reply Last reply
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                        • S shravani

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

                          jsulmJ Offline
                          jsulmJ Offline
                          jsulm
                          Lifetime Qt Champion
                          wrote on 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

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                          • jsulmJ jsulm

                            @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 last edited by
                            #48

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

                            jsulmJ 1 Reply Last reply
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                            • S shravani

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

                              jsulmJ Offline
                              jsulmJ Offline
                              jsulm
                              Lifetime Qt Champion
                              wrote on 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

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                              • jsulmJ jsulm

                                @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 last edited by
                                #50

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

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                                • jsulmJ jsulm

                                  @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 last edited by shravani
                                  #51

                                  @jsulm
                                  i am able to connect to emq broker.
                                  but it is not connecting to other brokers like shiftr.io,IBM cloud through internet ?

                                  jsulmJ 1 Reply Last reply
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                                  • S shravani

                                    @jsulm
                                    i am able to connect to emq broker.
                                    but it is not connecting to other brokers like shiftr.io,IBM cloud through internet ?

                                    jsulmJ Offline
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                                    jsulm
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #52

                                    @shravani Should be possible if you have Internet connection and access rights.

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

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                                    • jsulmJ jsulm

                                      @shravani Should be possible if you have Internet connection and access rights.

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                                      shravani
                                      wrote on last edited by
                                      #53

                                      @jsulm
                                      internet connection is there. access rights?
                                      do i need to change anything in qt program?

                                      jsulmJ 1 Reply Last reply
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                                      • S shravani

                                        @jsulm
                                        internet connection is there. access rights?
                                        do i need to change anything in qt program?

                                        jsulmJ Offline
                                        jsulmJ Offline
                                        jsulm
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #54

                                        @shravani I never used it but I guess you need access rights to connect? You should ask the people providing those brokers.

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

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                                        • jsulmJ jsulm

                                          @shravani I never used it but I guess you need access rights to connect? You should ask the people providing those brokers.

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                                          shravani
                                          wrote on last edited by
                                          #55

                                          @jsulm
                                          do you know any broker that can be connected to qt application through internet?

                                          jsulmJ 1 Reply Last reply
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