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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
/*
main.cpp
A simple example of how to access items from an existing model.
*/
#include <QApplication>
#include <QLabel>
#include <QVBoxLayout>
#include <QWidget>
#include <QFileSystemModel>
#include <QPalette>
#include <QDir>
#include <QModelIndex>
/*!
Create a default directory model and, using the index-based interface to
the model and some QLabel widgets, populate the window's layout with the
names of objects in the directory.
*/
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QWidget window;
auto *layout = new QVBoxLayout(&window);
auto *title = new QLabel("Some items from the directory model", &window);
title->setBackgroundRole(QPalette::Base);
title->setMargin(8);
layout->addWidget(title);
//! [0]
auto *model = new QFileSystemModel;
auto onDirectoryLoaded = [model, layout, &window](const QString &directory) {
QModelIndex parentIndex = model->index(directory);
const int numRows = model->rowCount(parentIndex);
//! [1]
for (int row = 0; row < numRows; ++row) {
QModelIndex index = model->index(row, 0, parentIndex);
//! [1]
//! [2]
QString text = model->data(index, Qt::DisplayRole).toString();
//! [2]
// Display the text in a widget.
auto *label = new QLabel(text, &window);
layout->addWidget(label);
//! [3]
}
//! [3]
};
QObject::connect(model, &QFileSystemModel::directoryLoaded, onDirectoryLoaded);
model->setRootPath(QDir::currentPath());
//! [0]
window.setWindowTitle("A simple model example");
window.show();
return app.exec();
}
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