Qt 4.8: main.cpp Example File (declarative/shadereffects/main.cpp)

Qt Reference Documentation

- Qt 4.8
- ALL VERSIONS

- A
- A
- A
- Print

# main.cpp Example File

declarative/shadereffects/main.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
     ** Contact: http://www.qt-project.org/legal
     **
     ** This file is part of the examples of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:LGPL$
     ** Commercial License Usage
     ** Licensees holding valid commercial Qt licenses may use this file in
     ** accordance with the commercial license agreement provided with the
     ** Software or, alternatively, in accordance with the terms contained in
     ** a written agreement between you and Digia.  For licensing terms and
     ** conditions see http://qt.digia.com/licensing.  For further information
     ** use the contact form at http://qt.digia.com/contact-us.
     **
     ** 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, Digia gives you certain additional
     ** rights.  These rights are described in the Digia 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.
     **
     **
     ** $QT_END_LICENSE$
     **
     ****************************************************************************/

     #include "qmlapplicationviewer.h"
     #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);
         QmlApplicationViewer viewer;

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

         viewer.setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
         viewer.setAttribute(Qt::WA_OpaquePaintEvent);
         viewer.setAttribute(Qt::WA_NoSystemBackground);
         viewer.setOrientation(QmlApplicationViewer::ScreenOrientationAuto);
         viewer.setMainQmlFile(QLatin1String("qml/shadereffects/main.qml"));
         QObject::connect(viewer.engine(), SIGNAL(quit()), &viewer, SLOT(close()));
         viewer.showExpanded();

         return app.exec();
     }