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Making a Qt custom widget without Qt Creator

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  • mrjjM mrjj

    @Panoss
    yes. as long as it matches the visual studio suite you install later it should be fine.

    Can I ask what goal is ?
    You want to create a custom Designer plugin and use in your windows project or
    what is the plan?
    Or is just to test it out?

    Yes compiling Creator do take some time.
    I didnt use the make install thing.
    I simply copied worldtimeclockplugin.dll to
    M:\1_Creator\qt-creator-build-2\bin\plugins\designer
    (bin\plugins\designer)
    and it was visible in designer.

    So if goal is to produce a real plugin for Designer, then you need visual studio.

    If just for trying it out, we could cheat and i can give u the mingw Creator.
    Its like 50 MB download.
    But for a real project/plugin, the Visual Studio road is better.

    P Offline
    P Offline
    Panoss
    wrote on last edited by Panoss
    #18

    My goal is to create a real widget (ok plugin which wraps the widget).
    The strange thing is that I managed to create Qt widgets with Python, SO MUCH easier, just two files, one the plugin and one the widget, put in the right place and immediatelly show up in Qt Designer!!!
    I can't believe that with Qt Creator it's so much harder!!!
    Antway...I 'm thinking of using Visual Studio Express 2015.
    Is this suitable as Visual Studio?

    mrjjM jsulmJ 2 Replies Last reply
    0
    • P Panoss

      My goal is to create a real widget (ok plugin which wraps the widget).
      The strange thing is that I managed to create Qt widgets with Python, SO MUCH easier, just two files, one the plugin and one the widget, put in the right place and immediatelly show up in Qt Designer!!!
      I can't believe that with Qt Creator it's so much harder!!!
      Antway...I 'm thinking of using Visual Studio Express 2015.
      Is this suitable as Visual Studio?

      mrjjM Offline
      mrjjM Offline
      mrjj
      Lifetime Qt Champion
      wrote on last edited by
      #19

      @Panoss
      Im not sure express will work but it might nowadays.
      I only heard of
      https://www.visualstudio.com/vs/community/
      But i can be wrong. I dont use visual studio at all. :)

      The reason for it being hard in C++ than python is the way DLLS works in windows.
      ( and python is not compiled)
      On linux its more easy as there is only gcc compiler.

      Just final question.
      It is easy to use custom plugins without all the plugin code using
      promotion.
      http://doc.qt.io/qt-5/designer-using-custom-widgets.html

      That however do not provide Design time editing of its properties.

      P 1 Reply Last reply
      0
      • P Panoss

        My goal is to create a real widget (ok plugin which wraps the widget).
        The strange thing is that I managed to create Qt widgets with Python, SO MUCH easier, just two files, one the plugin and one the widget, put in the right place and immediatelly show up in Qt Designer!!!
        I can't believe that with Qt Creator it's so much harder!!!
        Antway...I 'm thinking of using Visual Studio Express 2015.
        Is this suitable as Visual Studio?

        jsulmJ Offline
        jsulmJ Offline
        jsulm
        Lifetime Qt Champion
        wrote on last edited by
        #20

        @Panoss Use Community edition, it is free. Don't forget to select C++ during installation.

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

        1 Reply Last reply
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        • mrjjM mrjj

          @Panoss
          Im not sure express will work but it might nowadays.
          I only heard of
          https://www.visualstudio.com/vs/community/
          But i can be wrong. I dont use visual studio at all. :)

          The reason for it being hard in C++ than python is the way DLLS works in windows.
          ( and python is not compiled)
          On linux its more easy as there is only gcc compiler.

          Just final question.
          It is easy to use custom plugins without all the plugin code using
          promotion.
          http://doc.qt.io/qt-5/designer-using-custom-widgets.html

          That however do not provide Design time editing of its properties.

          P Offline
          P Offline
          Panoss
          wrote on last edited by Panoss
          #21

          @mrjj said in Making a Qt custom widget without Qt Creator:

          @Panoss
          Just final question.
          It is easy to use custom plugins without all the plugin code using
          promotion.

          No, I need real widget(plugin).
          Well, I thought of it again, I think I'd better compile Qt Creator with mingw.
          How can I do this?
          According to this...it's a nightmare!!
          Will I have to re-compile if I create a new plugin sometime later?
          Or it's done once and forever?

          mrjjM 1 Reply Last reply
          0
          • P Panoss

            @mrjj said in Making a Qt custom widget without Qt Creator:

            @Panoss
            Just final question.
            It is easy to use custom plugins without all the plugin code using
            promotion.

            No, I need real widget(plugin).
            Well, I thought of it again, I think I'd better compile Qt Creator with mingw.
            How can I do this?
            According to this...it's a nightmare!!
            Will I have to re-compile if I create a new plugin sometime later?
            Or it's done once and forever?

            mrjjM Offline
            mrjjM Offline
            mrjj
            Lifetime Qt Champion
            wrote on last edited by mrjj
            #22

            @Panoss
            Its sort of a do once and use mingw Creator for ever with that version of Qt
            But in a few version of Qt you might need to recompile Creator.

            Its not a nightmare as such ( webkit is: ) but it does take some (long) time.

            If you plan on others to use your plugin , the VS way is still better :)
            You will still use Creator etc and its just other compiler.

            And no, the whole reason to compile Creator with mingww is so it will load plugins compiled with
            mingw. So as long as you do not upgrade mingw , then no need to ever recompile Creator for a new plugin.

            The normal Creator is compiled with Vs and only like VS compiled plugins.

            So in my opinion, for your use case Visual Studio is better as its how it normally works and
            all other installations of Qt can just use it.

            1 Reply Last reply
            1
            • P Offline
              P Offline
              Panoss
              wrote on last edited by
              #23

              Ok, I 'll go for the Visual Studio, you convienced me :).

              mrjjM 1 Reply Last reply
              1
              • P Panoss

                Ok, I 'll go for the Visual Studio, you convienced me :).

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by mrjj
                #24

                @Panoss
                Super. Its fun with plugins.
                We need more , one can never have too many Designer widgets :)

                Final note:
                The debugger is a separate download.
                https://forum.qt.io/topic/60713/setting-visual-studio-2015-debugger/

                optional component called "debugging tools for windows"

                This is often a surprise :)

                1 Reply Last reply
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                • P Offline
                  P Offline
                  Panoss
                  wrote on last edited by Panoss
                  #25

                  "Optional". So I can live without it, right?
                  You mean, 'this is often a good surprise' ?

                  mrjjM 1 Reply Last reply
                  0
                  • P Panoss

                    "Optional". So I can live without it, right?
                    You mean, 'this is often a good surprise' ?

                    mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by mrjj
                    #26

                    @Panoss

                    You will need debugger :)
                    We all do.
                    And no its was not good surprise.
                    They come here and say.
                    "Program crash"
                    and we go like "ok, place a breakpoint and single step the function to find crash point."

                    But it can wait till later i guess :)

                    1 Reply Last reply
                    1
                    • mrjjM Offline
                      mrjjM Offline
                      mrjj
                      Lifetime Qt Champion
                      wrote on last edited by
                      #27

                      Fast question:
                      This plugin will run on windows xp?
                      The app is for Xp?

                      Note that from 5.7 ( think) its not tested on xp.
                      Might work or might not. Its not supported.

                      1 Reply Last reply
                      0
                      • P Offline
                        P Offline
                        Panoss
                        wrote on last edited by Panoss
                        #28

                        It will run on Win 10, Win 7 and XP.

                        mrjjM 1 Reply Last reply
                        0
                        • P Panoss

                          It will run on Win 10, Win 7 and XP.

                          mrjjM Offline
                          mrjjM Offline
                          mrjj
                          Lifetime Qt Champion
                          wrote on last edited by mrjj
                          #29

                          @Panoss
                          Ok. just asking as XP is not on ppl mind anymore.
                          https://forum.qt.io/topic/73292/the-last-qt-version-that-supported-windows-xp

                          Sounds like using 5.6 is the best bet :)

                          Did u try that version of Creator on xp?

                          It didn't start or ?

                          Note that Xp in virtual machine do not have openGL (often) and can only work if started with some option
                          https://forum.qt.io/topic/36827/qt-creator-3-0-welcome-mode-not-working-in-virtualbox-vm

                          like
                          c:\path\qtcreator -noload Welcome -noload QmlDesigner -noload QmlProfiler

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                          • P Offline
                            P Offline
                            Panoss
                            wrote on last edited by
                            #30

                            On XP I haven't tried Qt Creator yet.
                            I was thinking of trying an older version, and adjusting the code where necessary.

                            mrjjM 1 Reply Last reply
                            0
                            • P Panoss

                              On XP I haven't tried Qt Creator yet.
                              I was thinking of trying an older version, and adjusting the code where necessary.

                              mrjjM Offline
                              mrjjM Offline
                              mrjj
                              Lifetime Qt Champion
                              wrote on last edited by
                              #31

                              @Panoss
                              well if u go back to Qt4 then all plugin stuff is a bit different. ( from Qt5 series)
                              So would be great if 5.6 can be used. :)

                              1 Reply Last reply
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                              • P Offline
                                P Offline
                                Panoss
                                wrote on last edited by
                                #32

                                Ok, I installed VS 2015 and the debugger (Windows 10 SDK).
                                Qt Creator auto-detected the VS compiler and a CDB debugger (this must be from Windows 10 SDK).
                                This means I 'm ready?
                                So how do I compile a plugin to dll?

                                1 Reply Last reply
                                0
                                • SGaistS Offline
                                  SGaistS Offline
                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #33

                                  Start a "Qt Custom Designer Plugin" project and it will be all prepared for that. This one is under "Other project" in the "New File or Project" dialog.

                                  Interested in AI ? www.idiap.ch
                                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                  1 Reply Last reply
                                  1
                                  • P Offline
                                    P Offline
                                    Panoss
                                    wrote on last edited by Panoss
                                    #34

                                    I make a New Project->Qt Custom Designer Widget, Name: I enter 'AnalogClock'->Next but I see no VS kit:

                                    alt text

                                    And no VS kit is auto detected.
                                    Maybe I should add manually a VS kit?

                                    Should I make two projects? The 'main' project in wich the widget will be used, and the project of the widget (plugin)?

                                    1 Reply Last reply
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                                    • P Offline
                                      P Offline
                                      Panoss
                                      wrote on last edited by Panoss
                                      #35

                                      I tried to add a kit manually, but it raises errors:
                                      alt text

                                      (I changed C++ compiler from MingW to VS2015)

                                      EDIT: Ok, I had forgotten in Maintenance tool to add, at Qt5.8: msvc2015 32-bit, I'm adding it right now.

                                      1 Reply Last reply
                                      1
                                      • P Offline
                                        P Offline
                                        Panoss
                                        wrote on last edited by Panoss
                                        #36

                                        Ok, after adding msvc2015 32-bit in Maintenance tool, everything seems ok.
                                        I built the poject, and a dll was created(!!wow) in my project 's debug folder.

                                        I also now have two folders:
                                        c:\qt\5.8\mingw53_32\bin and
                                        c:\qt\5.8\msvc2015\bin
                                        which have a designer.exe inside.
                                        I run them both (I suppose the one that should show my plugin is the msvc2015\bind\designer.exe) but in none of them appears my plugin.
                                        Also the dll of my plugin was not copied in any of the folders of c:\qt\5.8.

                                        jsulmJ 1 Reply Last reply
                                        0
                                        • P Panoss

                                          Ok, after adding msvc2015 32-bit in Maintenance tool, everything seems ok.
                                          I built the poject, and a dll was created(!!wow) in my project 's debug folder.

                                          I also now have two folders:
                                          c:\qt\5.8\mingw53_32\bin and
                                          c:\qt\5.8\msvc2015\bin
                                          which have a designer.exe inside.
                                          I run them both (I suppose the one that should show my plugin is the msvc2015\bind\designer.exe) but in none of them appears my plugin.
                                          Also the dll of my plugin was not copied in any of the folders of c:\qt\5.8.

                                          jsulmJ Offline
                                          jsulmJ Offline
                                          jsulm
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #37

                                          @Panoss Try to copy the manually to plugins/designer directory in your msvc2015 Qt installation.

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

                                          1 Reply Last reply
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