TableView report binding loop detected for xxxxxx

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!

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.

JohnDaYe

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

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.

JohnDaYe

@dheerendra 5.11.0 has the same issue

dheerendra

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

DamienL

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...

arkceajin

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