a21f3431b8
Cleanup the Widget examples - use the new signal/slot syntax where possible - tutorials subdirectory Change-Id: I741589f6616578412ad74f8371e0e3c87df783a2 Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com> Reviewed-by: Luca Beldi <v.ronin@yahoo.it>
109 lines
3.4 KiB
C++
109 lines
3.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtWidgets>
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class Notepad : public QWidget
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{
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Q_OBJECT
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public:
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Notepad();
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private slots:
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void quit();
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private:
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QTextEdit *textEdit;
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QPushButton *quitButton;
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};
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Notepad::Notepad()
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{
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textEdit = new QTextEdit;
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quitButton = new QPushButton(tr("Quit"));
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connect(quitButton, &QPushButton::clicked,
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this, &Notepad::quit);
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QVBoxLayout *layout = new QVBoxLayout;
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layout->addWidget(textEdit);
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layout->addWidget(quitButton);
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setLayout(layout);
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setWindowTitle(tr("Notepad"));
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}
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void Notepad::quit()
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{
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QMessageBox messageBox;
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messageBox.setWindowTitle(tr("Notepad"));
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messageBox.setText(tr("Do you really want to quit?"));
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messageBox.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
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messageBox.setDefaultButton(QMessageBox::No);
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if (messageBox.exec() == QMessageBox::Yes)
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qApp->quit();
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}
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int main(int argc, char **argv)
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{
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QApplication app(argc, argv);
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Notepad notepad;
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notepad.show();
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return app.exec();
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}
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#include "main.moc"
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