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UI Builder

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  • Y Offline
    Y Offline
    YorkCleave
    wrote on last edited by
    #3

    image.png

    I removed that line.
    I then get the following linker errors :
    main.obj:-1: error: LNK2019: unresolved external symbol "public: __cdecl QUiLoader::QUiLoader(class QObject *)" (??0QUiLoader@@QEAA@PEAVQObject@@@Z) referenced in function main
    main.obj:-1: error: LNK2019: unresolved external symbol "public: virtual __cdecl QUiLoader::~QUiLoader(void)" (??1QUiLoader@@UEAA@XZ) referenced in function main
    main.obj:-1: error: LNK2019: unresolved external symbol "public: class QWidget * __cdecl QUiLoader::load(class QIODevice *,class QWidget *)" (?load@QUiLoader@@QEAAPEAVQWidget@@PEAVQIODevice@@PEAV2@@Z) referenced in function main

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    • Christian EhrlicherC Offline
      Christian EhrlicherC Offline
      Christian Ehrlicher
      Lifetime Qt Champion
      wrote on last edited by
      #4

      Ah, you are using QUILoader (for unknown reasons). Then you should use QT += uitools as written in the documentation: https://doc.qt.io/qt-6/quiloader.html

      Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
      Visit the Qt Academy at https://academy.qt.io/catalog

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      • Y Offline
        Y Offline
        YorkCleave
        wrote on last edited by
        #5

        image.png
        Ok I tried your suggestion but then the program doesn't seem to run ?

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        • Christian EhrlicherC Offline
          Christian EhrlicherC Offline
          Christian Ehrlicher
          Lifetime Qt Champion
          wrote on last edited by
          #6

          Please do not post screenshots.
          Since you did not post your code I don't know what you're doing wrong. There are a lot of Qt examples out there on how to use ui files: https://doc.qt.io/qt-6/examples-widgets.html

          Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
          Visit the Qt Academy at https://academy.qt.io/catalog

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          • Y Offline
            Y Offline
            YorkCleave
            wrote on last edited by
            #7

            Ok, here is the code for the main function :
            int main(int argc, char *argv[]) {
            QApplication app(argc, argv);

            QFile file("MainMenu.ui");
            file.open(QFile::ReadOnly);
            
            QUiLoader loader;
            QWidget *widget = loader.load(&file);  // Load the UI file dynamically
            file.close();
            
            if (!widget) return -1;
            
            widget->show();
            
            
            ChessBoard board;
            board.show();
            
            return app.exec();
            

            }

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            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #8

              Hi,

              You are using a relative path. You ui file is not located in the build folder thus it cannot be loaded.

              You should add proper error checking to your QFile code. It would have caught the issue.

              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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              • Christian EhrlicherC Offline
                Christian EhrlicherC Offline
                Christian Ehrlicher
                Lifetime Qt Champion
                wrote on last edited by
                #9

                I still don't know what you're trying to achieve by loading a ui file directly and then simply showing it. You should also check if the file could be opened successfully if you want to stay with the loading of the ui file.
                Use a debugger to see where exactly it is crashing. i would guess somewhere inside your ChessBoard class.

                Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                Visit the Qt Academy at https://academy.qt.io/catalog

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                • Y Offline
                  Y Offline
                  YorkCleave
                  wrote on last edited by
                  #10

                  Thanks for the help. The problem was the relative path. It is working now.

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                  • Y Offline
                    Y Offline
                    YorkCleave
                    wrote on last edited by
                    #11

                    Ok the next issue has arisen.
                    When I try and create a signal on the "New Standard Game", it says no documents matching ui_MainMenu.h could be found ?

                    Pl45m4P jsulmJ 2 Replies Last reply
                    0
                    • Y YorkCleave

                      Ok the next issue has arisen.
                      When I try and create a signal on the "New Standard Game", it says no documents matching ui_MainMenu.h could be found ?

                      Pl45m4P Offline
                      Pl45m4P Offline
                      Pl45m4
                      wrote on last edited by
                      #12

                      @YorkCleave said in UI Builder:

                      When I try and create a signal on the "New Standard Game", it says no documents matching ui_MainMenu.h could be found ?

                      We don't know what "New Standard Game" means in your case and we can't see what you are doing.
                      ui_MainMenu.h is the translated UI Header, which should have nothing to do with Signals & Slots, unless you are connecting to the UI of another class, which is not a good way and might lead to issue sooner or later.


                      If debugging is the process of removing software bugs, then programming must be the process of putting them in.

                      ~E. W. Dijkstra

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                      • Y YorkCleave

                        Ok the next issue has arisen.
                        When I try and create a signal on the "New Standard Game", it says no documents matching ui_MainMenu.h could be found ?

                        jsulmJ Offline
                        jsulmJ Offline
                        jsulm
                        Lifetime Qt Champion
                        wrote on last edited by
                        #13

                        @YorkCleave Is there a reason why you're using QUiLoader?

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

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                        • Y Offline
                          Y Offline
                          YorkCleave
                          wrote on last edited by
                          #14

                          Ok. is it ok if I post a screenshot of MainMenu here ?

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