main.cpp Example File

 /****************************************************************************
 **
 ** Copyright (C) 2011 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.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** GNU Lesser General Public License Usage
 ** 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 1.1, 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.
 **
 ** Other Usage
 ** Alternatively, this file may be used in accordance with the terms and
 ** conditions contained in a signed written agreement between you and Nokia.
 **
 **
 **
 **
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include <QtGui/QApplication>
 #include <QtOpenGL>
 #include <QDeclarativeView>
 #include <QDeclarativeEngine>

 int main(int argc, char *argv[])
 {
 // Depending on which is the recommended way for the platform, either use
 // opengl graphics system or paint into QGLWidget.
 #ifdef SHADEREFFECTS_USE_OPENGL_GRAPHICSSYSTEM
     QApplication::setGraphicsSystem("opengl");
 #endif

     QApplication app(argc, argv);
     QDeclarativeView view;

 #ifndef SHADEREFFECTS_USE_OPENGL_GRAPHICSSYSTEM
     QGLFormat format = QGLFormat::defaultFormat();
     format.setSampleBuffers(false);
     format.setSwapInterval(1);
     QGLWidget* glWidget = new QGLWidget(format);
     glWidget->setAutoFillBackground(false);
     view.setViewport(glWidget);
 #endif

     view.setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
     view.setAttribute(Qt::WA_OpaquePaintEvent);
     view.setAttribute(Qt::WA_NoSystemBackground);
     view.setSource(QUrl::fromLocalFile(QLatin1String("qml/main.qml")));
     QObject::connect(view.engine(), SIGNAL(quit()), &view, SLOT(close()));

     view.show();

     return app.exec();
 }