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

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  • S shravani

    @raven-worx
    but using qtcreator also, run qmake is possible right?why am i not getting .lib file file?can you see screenshots of my debug folder (above)after building.

    raven-worxR Offline
    raven-worxR Offline
    raven-worx
    Moderators
    wrote on last edited by
    #23

    @shravani
    yes, but especially when you are not completley sure what you are doing there are some pitfalls.
    You can try to build using QtCreator, but then do not press the Run/Debug button, but the Build button below.

    --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
    If you have a question please use the forum so others can benefit from the solution in the future

    S 1 Reply Last reply
    2
    • raven-worxR raven-worx

      @shravani
      yes, but especially when you are not completley sure what you are doing there are some pitfalls.
      You can try to build using QtCreator, but then do not press the Run/Debug button, but the Build button below.

      S Offline
      S Offline
      shravani
      wrote on last edited by shravani
      #24

      @raven-worx
      hi,
      after building i came to know qmqtt.lib was created(5th line from last).but i could not find it inorder to add that path to .pro file.can u please tell by default where it will be stored? in build/debug also it is not present(see above post).

      thank you

      0_1498707021202_build_log.PNG

      raven-worxR 1 Reply Last reply
      0
      • dheerendraD Offline
        dheerendraD Offline
        dheerendra
        Qt Champions 2022
        wrote on last edited by
        #25

        Most easiest way is to hit windows search button, search that file and find that directory. Specify this directory in pro file.

        Dheerendra
        @Community Service
        Certified Qt Specialist
        http://www.pthinks.com

        1 Reply Last reply
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        • S shravani

          @raven-worx
          hi,
          after building i came to know qmqtt.lib was created(5th line from last).but i could not find it inorder to add that path to .pro file.can u please tell by default where it will be stored? in build/debug also it is not present(see above post).

          thank you

          0_1498707021202_build_log.PNG

          raven-worxR Offline
          raven-worxR Offline
          raven-worx
          Moderators
          wrote on last edited by
          #26

          @shravani
          according to this log in the \bin directory.

          --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
          If you have a question please use the forum so others can benefit from the solution in the future

          S 1 Reply Last reply
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          • raven-worxR raven-worx

            @shravani
            according to this log in the \bin directory.

            S Offline
            S Offline
            shravani
            wrote on last edited by shravani
            #27

            @raven-worx
            thank you very much. now i added that .lib file to .pro file and build all is successful.but as the program start executing im getting this error while debugging.can u please look into it?
            i dont understand which dll file is missing and where to add it?

            0_1498793774462_Capture.PNG

            jsulmJ 1 Reply Last reply
            0
            • S shravani

              @raven-worx
              thank you very much. now i added that .lib file to .pro file and build all is successful.but as the program start executing im getting this error while debugging.can u please look into it?
              i dont understand which dll file is missing and where to add it?

              0_1498793774462_Capture.PNG

              jsulmJ Offline
              jsulmJ Offline
              jsulm
              Lifetime Qt Champion
              wrote on last edited by
              #28

              @shravani How do you start the app? From QtCreator?
              On Windows you can use http://www.dependencywalker.com/ to find out which libraries an application needs.
              If you want to start your app outside of QtCreator then you first need to deploy it: http://doc.qt.io/qt-5/windows-deployment.html

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

              S 1 Reply Last reply
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              • jsulmJ jsulm

                @shravani How do you start the app? From QtCreator?
                On Windows you can use http://www.dependencywalker.com/ to find out which libraries an application needs.
                If you want to start your app outside of QtCreator then you first need to deploy it: http://doc.qt.io/qt-5/windows-deployment.html

                S Offline
                S Offline
                shravani
                wrote on last edited by
                #29

                @jsulm

                im running it in qtcreator, not outside.inside qt also do i need to include?

                jsulmJ 1 Reply Last reply
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                • S shravani

                  @jsulm

                  im running it in qtcreator, not outside.inside qt also do i need to include?

                  jsulmJ Offline
                  jsulmJ Offline
                  jsulm
                  Lifetime Qt Champion
                  wrote on last edited by
                  #30

                  @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?

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

                  S 1 Reply Last reply
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                  • jsulmJ jsulm

                    @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?

                    S Offline
                    S Offline
                    shravani
                    wrote on 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

                    jsulmJ 1 Reply Last reply
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                    • S shravani

                      @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

                      jsulmJ Offline
                      jsulmJ Offline
                      jsulm
                      Lifetime Qt Champion
                      wrote on 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
                      1
                      • jsulmJ jsulm

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

                        S Offline
                        S Offline
                        shravani
                        wrote on 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

                        jsulmJ 1 Reply Last reply
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                        • S shravani

                          @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

                          jsulmJ Offline
                          jsulmJ Offline
                          jsulm
                          Lifetime Qt Champion
                          wrote on 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
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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).

                            S Offline
                            S Offline
                            shravani
                            wrote on last edited by
                            #35
                            This post is deleted!
                            1 Reply Last reply
                            1
                            • 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).

                              S Offline
                              S Offline
                              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.

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                                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                S 1 Reply Last reply
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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.

                                  S Offline
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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
                                  0
                                  • 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

                                    S 1 Reply Last reply
                                    0
                                    • jsulmJ jsulm

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

                                      S Offline
                                      S Offline
                                      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
                                      0
                                      • 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

                                        S 1 Reply Last reply
                                        0
                                        • jsulmJ jsulm

                                          @shravani While running from QtCreator?

                                          S Offline
                                          S Offline
                                          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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