Qt Reference Documentation

main.cpp Example File

qtconcurrent/runfunction/main.cpp
 /****************************************************************************
 **
 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** 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 <QDebug>
 #include <QThread>
 #include <QString>
 #include <qtconcurrentrun.h>
 #include <QApplication>

 #ifndef QT_NO_CONCURRENT

 using namespace QtConcurrent;

 void hello(QString name)
 {
     qDebug() << "Hello" << name << "from" << QThread::currentThread();
 }

 int main(int argc, char **argv)
 {
     QApplication app(argc, argv);
     QFuture<void> f1 = run(hello, QString("Alice"));
     QFuture<void> f2 = run(hello, QString("Bob"));
     f1.waitForFinished();
     f2.waitForFinished();
 }

 #else

 #include <QLabel>

 int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);
     QString text("Qt Concurrent is not yet supported on this platform");

     QLabel *label = new QLabel(text);
     label->setWordWrap(true);

 #if defined(Q_WS_S60) || defined(Q_WS_MAEMO_5)
     label->showMaximized();
 #else
     label->show();
 #endif
     qDebug() << text;

     app.exec();
 }

 #endif