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Shared Library Dialog

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  • kshegunovK kshegunov

    @TigerBunny
    Hello,

    A major requirement is to create "modules" for our application. In Windows we did this with .dll's, some of which contained resources.

    If you mean to load those "modules" at runtime you'd want to research the plugins.

    But this generates the error: "C1083: Cannot open include file: 'QDialog': No such file or directory"

    Probably you have forgotten to add the QT += widgets line in your project file.

    Kind regards.

    T Offline
    T Offline
    TigerBunny
    wrote on last edited by
    #4

    @kshegunov, I read the link. Are you sure "plugins" is what I want?

    I simply want to start seeing if Qt has the ability to be modular by loading a dialog inside an application where the dialog is replaceable without recompiling the application. Much like a resource .dll is in Windows.

    Do you know if there is an example of using "plugins" to load a dialog?

    1 Reply Last reply
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    • mrjjM Offline
      mrjjM Offline
      mrjj
      Lifetime Qt Champion
      wrote on last edited by mrjj
      #5

      hi
      please try/read this small sample
      http://doc.qt.io/qt-5/qtwidgets-tools-echoplugin-example.html

      Plugins can BOTH be to extend the qt. but same method/functionality can also be used to extend any Qt app.
      So its like with DLLS just more modern using interfaces.
      So it can easy be a modul for sharing Dialogs or what ever needed.

      T 1 Reply Last reply
      0
      • mrjjM mrjj

        hi
        please try/read this small sample
        http://doc.qt.io/qt-5/qtwidgets-tools-echoplugin-example.html

        Plugins can BOTH be to extend the qt. but same method/functionality can also be used to extend any Qt app.
        So its like with DLLS just more modern using interfaces.
        So it can easy be a modul for sharing Dialogs or what ever needed.

        T Offline
        T Offline
        TigerBunny
        wrote on last edited by
        #6

        @mrjj

        The example doesn't seem to show a dialog (or any other resource) inside a module. It appears to simply echo text back from a module without any resources to an application.

        Ideally I would like an example already done that demonstrates my goal. If there is none, the next choice would be a tutorial on how to do it.

        Failing all of that, documentation that will give me confidence this will work. I can work from there to create my own example.

        I would very much appreciate a full example.

        mrjjM 1 Reply Last reply
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        • mrjjM Offline
          mrjjM Offline
          mrjj
          Lifetime Qt Champion
          wrote on last edited by
          #7

          Ok. I know no samples that pops a dialog.
          The other examples are about expanding the host application.
          http://doc.qt.io/qt-5/qtwidgets-tools-plugandpaint-example.html

          So im afraid u must keep looking.

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          • T TigerBunny

            @mrjj

            The example doesn't seem to show a dialog (or any other resource) inside a module. It appears to simply echo text back from a module without any resources to an application.

            Ideally I would like an example already done that demonstrates my goal. If there is none, the next choice would be a tutorial on how to do it.

            Failing all of that, documentation that will give me confidence this will work. I can work from there to create my own example.

            I would very much appreciate a full example.

            mrjjM Offline
            mrjjM Offline
            mrjj
            Lifetime Qt Champion
            wrote on last edited by
            #8

            @TigerBunny
            Hi
            I was bored. so I modified echo sample to open dialog
            https://www.dropbox.com/s/qzunmovatpbmmai/withdialog.zip?dl=0
            dialog lives in plugin.
            note the UI file is the resource.

            T 1 Reply Last reply
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            • mrjjM mrjj

              @TigerBunny
              Hi
              I was bored. so I modified echo sample to open dialog
              https://www.dropbox.com/s/qzunmovatpbmmai/withdialog.zip?dl=0
              dialog lives in plugin.
              note the UI file is the resource.

              T Offline
              T Offline
              TigerBunny
              wrote on last edited by
              #9

              @mrjj, I don't see a UI file. All I get is an error message. Also, there is only 1 project.

              I would expect an example to have 2 projects. One that creates the plugin with the dialog, the other an application that uses it. Are my expectations not correct?

              mrjjM 1 Reply Last reply
              0
              • mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by
                #10

                ok let me check zip. there should be 2 folders. did u unzip correctly?

                1 Reply Last reply
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                • T TigerBunny

                  @mrjj, I don't see a UI file. All I get is an error message. Also, there is only 1 project.

                  I would expect an example to have 2 projects. One that creates the plugin with the dialog, the other an application that uses it. Are my expectations not correct?

                  mrjjM Offline
                  mrjjM Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on last edited by mrjj
                  #11

                  @TigerBunny
                  hi
                  for me all is in zip ?
                  http://postimg.org/image/hbjkgv7vt/

                  including the UI file. in the plugin folder

                  Make sure you unzip it all. do not click inside the zip file.
                  extract all first.

                  T 1 Reply Last reply
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                  • mrjjM mrjj

                    @TigerBunny
                    hi
                    for me all is in zip ?
                    http://postimg.org/image/hbjkgv7vt/

                    including the UI file. in the plugin folder

                    Make sure you unzip it all. do not click inside the zip file.
                    extract all first.

                    T Offline
                    T Offline
                    TigerBunny
                    wrote on last edited by
                    #12

                    @mrjj ,

                    I must have used the wrong extraction procedure. I'm not up on Windows compression, my mistake.

                    I'll take a look. This looks much better. Thanks.

                    mrjjM 1 Reply Last reply
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                    • T TigerBunny

                      @mrjj ,

                      I must have used the wrong extraction procedure. I'm not up on Windows compression, my mistake.

                      I'll take a look. This looks much better. Thanks.

                      mrjjM Offline
                      mrjjM Offline
                      mrjj
                      Lifetime Qt Champion
                      wrote on last edited by
                      #13

                      @TigerBunny
                      well windows native zip handling, does "help" one by sort of showing like a folder. :)
                      Note. to add dialog to sample was very little.
                      Just add Dialog via FIle->New and then add include to plugin and change
                      interface function to show ( exec) dialog.

                      T 1 Reply Last reply
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                      • mrjjM mrjj

                        @TigerBunny
                        well windows native zip handling, does "help" one by sort of showing like a folder. :)
                        Note. to add dialog to sample was very little.
                        Just add Dialog via FIle->New and then add include to plugin and change
                        interface function to show ( exec) dialog.

                        T Offline
                        T Offline
                        TigerBunny
                        wrote on last edited by
                        #14

                        @mrjj

                        This works, but I can't find the output file. I assume there is something like a .dll this produces. How do I find it and what would it be called?

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                        0
                        • mrjjM Offline
                          mrjjM Offline
                          mrjj
                          Lifetime Qt Champion
                          wrote on last edited by mrjj
                          #15

                          yes its a DLL
                          for me its in
                          E:\build-echoplugin-Desktop_Qt_5_5_0_MinGW_32bit-Debug\plugins

                          The PRO file alters the destination.
                          Its so the main program can find it.

                          look for echoplugind.dll

                          it might also copy to
                          $$[QT_INSTALL_EXAMPLES]/widgets/tools/echoplugin/plugin

                          kshegunovK 1 Reply Last reply
                          0
                          • mrjjM mrjj

                            yes its a DLL
                            for me its in
                            E:\build-echoplugin-Desktop_Qt_5_5_0_MinGW_32bit-Debug\plugins

                            The PRO file alters the destination.
                            Its so the main program can find it.

                            look for echoplugind.dll

                            it might also copy to
                            $$[QT_INSTALL_EXAMPLES]/widgets/tools/echoplugin/plugin

                            kshegunovK Offline
                            kshegunovK Offline
                            kshegunov
                            Moderators
                            wrote on last edited by
                            #16

                            @TigerBunny
                            It seems @mrjj beat me to it. This thread, however, could also be useful for you.

                            Read and abide by the Qt Code of Conduct

                            1 Reply Last reply
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