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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Nokia Corporation and its Subsidiary(-ies) 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtWidgets>
+
+class Notepad : public QMainWindow
+{
+ Q_OBJECT
+
+public:
+ Notepad();
+
+private slots:
+ void open();
+ void save();
+
+private:
+ QTextEdit *textEdit;
+
+ QAction *openAction;
+ QAction *saveAction;
+ QAction *exitAction;
+
+ QMenu *fileMenu;
+};
+
+Notepad::Notepad()
+{
+
+ openAction = new QAction(tr("&Load"), this);
+ saveAction = new QAction(tr("&Save"), this);
+ exitAction = new QAction(tr("E&xit"), this);
+
+ connect(openAction, SIGNAL(triggered()), this, SLOT(open()));
+ connect(saveAction, SIGNAL(triggered()), this, SLOT(save()));
+ connect(exitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
+
+ fileMenu = menuBar()->addMenu(tr("&File"));
+ fileMenu->addAction(openAction);
+ fileMenu->addAction(saveAction);
+ fileMenu->addSeparator();
+ fileMenu->addAction(exitAction);
+
+ textEdit = new QTextEdit;
+ setCentralWidget(textEdit);
+
+ setWindowTitle(tr("Notepad"));
+}
+
+void Notepad::open()
+{
+ QString fileName = QFileDialog::getOpenFileName(this, tr("Open File"), "",
+ tr("Text Files (*.txt);;C++ Files (*.cpp *.h)"));
+
+ if (fileName != "") {
+ QFile file(fileName);
+ if (!file.open(QIODevice::ReadOnly)) {
+ QMessageBox::critical(this, tr("Error"), tr("Could not open file"));
+ return;
+ }
+ QTextStream in(&file);
+ textEdit->setText(in.readAll());
+ file.close();
+ }
+}
+
+void Notepad::save()
+{
+
+ QString fileName = QFileDialog::getSaveFileName(this, tr("Save File"), "",
+ tr("Text Files (*.txt);;C++ Files (*.cpp *.h)"));
+
+ if (fileName != "") {
+ QFile file(fileName);
+ if (!file.open(QIODevice::WriteOnly)) {
+ // error message
+ } else {
+ QTextStream stream(&file);
+ stream << textEdit->toPlainText();
+ stream.flush();
+ file.close();
+ }
+ }
+}
+
+int main(int argc, char **argv)
+{
+ QApplication app(argc, argv);
+
+ Notepad notepad;
+ notepad.show();
+
+ return app.exec();
+}
+
+#include "main.moc"
+