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TableView report binding loop detected for xxxxxx

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  • J Offline
    J Offline
    JohnDaYe
    wrote on last edited by
    #1
    #include <QGuiApplication>
    #include <QQmlApplicationEngine>
    #include <QtQuick/QQuickView>
    int main(int argc, char *argv[])
    {
        QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
        QQuickView::setSceneGraphBackend(QSGRendererInterface::Software);
    
        QGuiApplication app(argc, argv);
        QQmlApplicationEngine engine;
        engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
        if (engine.rootObjects().isEmpty())
            return -1;
    
        return app.exec();
    }
    
    
    import QtQuick 2.9
    import QtQuick.Window 2.2
    import QtQuick.Controls 1.4
    
    Window {
        visible: true
        width: 640
        height: 480
        color: "#00000000"
        flags: Qt.FramelessWindowHint
        title: qsTr("Hello World")
    
        ListModel {
            id: libraryModel
            ListElement {
                title: "A Masterpiece"
                author: "Gabriel"
            }
            ListElement {
                title: "Brilliance"
                author: "Jens"
            }
            ListElement {
                title: "Outstanding"
                author: "Frederik"
            }
        }
        TableView {
            id: tableView
            x: 145
            y: 221
            height: 168
            TableViewColumn {
                role: "title"
                title: "Title"
    
            }
            TableViewColumn {
                role: "author"
                title: "Author"
            }
            model: libraryModel
        }
    
        Button {
            id: button
            x: 516
            y: 132
            text: qsTr("Button")
            onClicked: {
                Qt.quit()
            }
        }
    
    }
    
    

    Qt will report information like this
    file:///E:/Qt/5.11.2/5.11.2/mingw53_32/qml/QtQuick/Controls/Private/BasicTableView.qml:615:17: QML Item: Binding loop detected for property "width"

    Qt Ver: Qt 5.11.2

    I search on internet, but i can not find any idea about this!

    T 1 Reply Last reply
    1
    • J JohnDaYe
      #include <QGuiApplication>
      #include <QQmlApplicationEngine>
      #include <QtQuick/QQuickView>
      int main(int argc, char *argv[])
      {
          QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
          QQuickView::setSceneGraphBackend(QSGRendererInterface::Software);
      
          QGuiApplication app(argc, argv);
          QQmlApplicationEngine engine;
          engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
          if (engine.rootObjects().isEmpty())
              return -1;
      
          return app.exec();
      }
      
      
      import QtQuick 2.9
      import QtQuick.Window 2.2
      import QtQuick.Controls 1.4
      
      Window {
          visible: true
          width: 640
          height: 480
          color: "#00000000"
          flags: Qt.FramelessWindowHint
          title: qsTr("Hello World")
      
          ListModel {
              id: libraryModel
              ListElement {
                  title: "A Masterpiece"
                  author: "Gabriel"
              }
              ListElement {
                  title: "Brilliance"
                  author: "Jens"
              }
              ListElement {
                  title: "Outstanding"
                  author: "Frederik"
              }
          }
          TableView {
              id: tableView
              x: 145
              y: 221
              height: 168
              TableViewColumn {
                  role: "title"
                  title: "Title"
      
              }
              TableViewColumn {
                  role: "author"
                  title: "Author"
              }
              model: libraryModel
          }
      
          Button {
              id: button
              x: 516
              y: 132
              text: qsTr("Button")
              onClicked: {
                  Qt.quit()
              }
          }
      
      }
      
      

      Qt will report information like this
      file:///E:/Qt/5.11.2/5.11.2/mingw53_32/qml/QtQuick/Controls/Private/BasicTableView.qml:615:17: QML Item: Binding loop detected for property "width"

      Qt Ver: Qt 5.11.2

      I search on internet, but i can not find any idea about this!

      T Offline
      T Offline
      Tirupathi Korla
      wrote on last edited by Tirupathi Korla
      #2

      @JohnDaYe you might have set tableview width value somewhere else in some other file. Try to search it and remove it. Also Try setting width value of tableview.

      J 1 Reply Last reply
      0
      • T Tirupathi Korla

        @JohnDaYe you might have set tableview width value somewhere else in some other file. Try to search it and remove it. Also Try setting width value of tableview.

        J Offline
        J Offline
        JohnDaYe
        wrote on last edited by
        #3

        @Tirupathi-Korla
        I try it, but do not resolved

        1 Reply Last reply
        0
        • dheerendraD Offline
          dheerendraD Offline
          dheerendra
          Qt Champions 2022
          wrote on last edited by
          #4

          Tried on 5.11.0. It is working fine. I just did copy-paste of your code. It could be issue with 5.11.2. Can you downgrade & check ? Or the code you pasted has some changes at your end. Please check.

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

          J 1 Reply Last reply
          0
          • dheerendraD dheerendra

            Tried on 5.11.0. It is working fine. I just did copy-paste of your code. It could be issue with 5.11.2. Can you downgrade & check ? Or the code you pasted has some changes at your end. Please check.

            J Offline
            J Offline
            JohnDaYe
            wrote on last edited by
            #5

            @dheerendra 5.11.0 has the same issue

            1 Reply Last reply
            0
            • dheerendraD Offline
              dheerendraD Offline
              dheerendra
              Qt Champions 2022
              wrote on last edited by
              #6

              which OS ? I tried on mac with 5.11.0. It is going good. I will try on other OS and update you.

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

              1 Reply Last reply
              0
              • D Offline
                D Offline
                DamienL
                wrote on last edited by
                #7

                I've got the very same issue.

                void MainWindow::on_connect_triggered()
                {
                    acq = new acquisition(this);
                
                    if(acq->startAcquisition()){
                
                        foreach(CANbus * can, acq->can)
                        {
                            if(can->connectDevice()){
                
                                can->m_view = new QQuickView(can->setEngine(), window);
                                can->m_view->setSource(QUrl("qrc:/view.qml"));
                                QWidget * container = createWindowContainer(can->m_view,this);
                                ui->horizontalLayout->addWidget(container);
                
                            }
                        }
                        ui->retranslateUi(this);
                    }
                }
                
                
                
                MainWindow::on_disconnect_triggered()
                {
                
                    if(ui->horizontalLayout->count()>0){
                
                        QLayoutItem *child;
                        while ((child = ui->horizontalLayout->takeAt(0)) != 0) {
                            delete child;
                        }
                    }
                
                    ui->retranslateUi(this);
                
                    foreach(CANbus * can, acq->can)
                    {
                        QWidget *container = createWindowContainer(can->m_view,this);
                        ui->horizontalLayout->removeWidget(container);
                        can->disconnectDevice();
                        delete can;
                    }
                
                    delete acq;
                    acq = nullptr;
                }
                

                When I instantiate my QQuickView for the first time I don't have the problem. It only occurs when I reconnect my device each time after:

                file:///C:/DLI/Dev/build-testCan-Desktop_Qt_5_11_1_MinGW_32bit-Debug/debug/QtQuick/Controls/Private/BasicTableView.qml:615:17: QML Item: Binding loop detected for property "width"
                

                I have no clue how to get rid of this problem...

                1 Reply Last reply
                0
                • A Offline
                  A Offline
                  arkceajin
                  wrote on last edited by arkceajin
                  #8

                  @dheerendra
                  Using the same code, 5.10.1 find the same issue.
                  Windows 7 & mingw32

                  1 Reply Last reply
                  0

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