Revision control
++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include "mymodel.h"
++
++ #include <QTime>
++
++ //! [quoting mymodel_a]
++ MyModel::MyModel(QObject *parent)
++ : QAbstractTableModel(parent)
++ , timer(new QTimer(this))
++ {
++ timer->setInterval(1000);
++ connect(timer, &QTimer::timeout , this, &MyModel::timerHit);
++ timer->start();
++ }
++ //! [quoting mymodel_a]
++ //-------------------------------------------------------
++ int MyModel::rowCount(const QModelIndex & /*parent */) const
++ {
++ return 2;
++ }
++
++ //-------------------------------------------------------
++ int MyModel::columnCount(const QModelIndex & /*parent */) const
++ {
++ return 3;
++ }
++
++ //-------------------------------------------------------
++ //! [quoting mymodel_QVariant ]
++ QVariant MyModel::data(const QModelIndex &index, int role) const
++ {
++ int row = index.row();
++ int col = index.column();
++
++ if (role == Qt::DisplayRole && row == 0 && col == 0)
++ return QTime::currentTime().toString();
++
++ return QVariant();
++ }
++ //! [quoting mymodel_QVariant ]
++ //-------------------------------------------------------
++ //! [quoting mymodel_b ]
++ void MyModel::timerHit()
++ {
++ // we identify the top left cell
++ QModelIndex topLeft = createIndex(0,0);
++ // emit a signal to make the view reread identified data
++ emit dataChanged(topLeft, topLeft, {Qt::DisplayRole});
++ }
++ //! [quoting mymodel_b ]