diff options
Diffstat (limited to 'src/widgets/doc/snippets/simplemodel-use/main.cpp')
-rw-r--r-- | src/widgets/doc/snippets/simplemodel-use/main.cpp | 107 |
1 files changed, 33 insertions, 74 deletions
diff --git a/src/widgets/doc/snippets/simplemodel-use/main.cpp b/src/widgets/doc/snippets/simplemodel-use/main.cpp index 940669e101..5a3d6ecce0 100644 --- a/src/widgets/doc/snippets/simplemodel-use/main.cpp +++ b/src/widgets/doc/snippets/simplemodel-use/main.cpp @@ -1,52 +1,5 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause /* main.cpp @@ -54,55 +7,61 @@ A simple example of how to access items from an existing model. */ -#include <QtGui> +#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. - - Note that we only want to read the filenames in the highest level of the - directory, so we supply a default (invalid) QModelIndex to the model in - order to indicate that we want top-level items. */ int main(int argc, char *argv[]) { QApplication app(argc, argv); - QWidget *window = new QWidget; - QVBoxLayout *layout = new QVBoxLayout(window); - QLabel *title = new QLabel("Some items from the directory model", window); + 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] - QFileSystemModel *model = new QFileSystemModel; - connect(model, &QFileSystemModel::directoryLoaded, [model](const QString &directory) { - QModelIndex parentIndex = model->index(directory); - int numRows = model->rowCount(parentIndex); - }); - model->setRootPath(QDir::currentPath); -//! [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); + for (int row = 0; row < numRows; ++row) { + QModelIndex index = model->index(row, 0, parentIndex); //! [1] //! [2] - QString text = model->data(index, Qt::DisplayRole).toString(); - // Display the text in a widget. + QString text = model->data(index, Qt::DisplayRole).toString(); //! [2] - - QLabel *label = new QLabel(text, window); - layout->addWidget(label); + // 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(); + window.setWindowTitle("A simple model example"); + window.show(); return app.exec(); } |