Long live Qt 4.5!

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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QImage>
+#include <QList>
+#include <QThread>
+#include <QDebug>
+#include <QApplication>
+#include <qtconcurrentmap.h>
+
+#ifndef QT_NO_CONCURRENT
+
+QImage scale(const QImage &image)
+{
+    qDebug() << "Scaling image in thread" << QThread::currentThread();
+    return image.scaled(QSize(100, 100), Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
+}
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    const int imageCount = 20;
+
+    // Create a list containing imageCount images.
+    QList<QImage> images;
+    for (int i = 0; i < imageCount; ++i)
+        images.append(QImage(1600, 1200, QImage::Format_ARGB32_Premultiplied));
+
+    // Use QtConcurrentBlocking::mapped to apply the scale function to all the
+    // images in the list.
+    QList<QImage> thumbnails = QtConcurrent::blockingMapped(images, scale);
+
+    return 0;
+}
+
+#else
+
+int main()
+{
+	qDebug() << "Qt Concurrent is not yet supported on this platform";
+}
+
+#endif