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main.cpp Example File
opengl/samplebuffers/main.cpp

 /****************************************************************************
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 ** Copyright (C) 2005-2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
 **
 ** This file is part of the documentation of the Qt Toolkit.
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 ** Licensees holding a valid Qt License Agreement may use this file in
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 ** contained therein.  Please consult your licensing agreement or
 ** contact [email protected] if any conditions of this licensing
 ** agreement are not clear to you.
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 ** http://trolltech.com/products/appdev/licensing.
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 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 #include <QtGui/QApplication>
 #include <QtGui/QMessageBox>
 #include "glwidget.h"

 int main(int argc, char **argv)
 {
     QApplication a(argc, argv);

     QGLFormat f = QGLFormat::defaultFormat();
     f.setSampleBuffers(true);
     QGLFormat::setDefaultFormat(f);
     if (!QGLFormat::hasOpenGL()) {
         QMessageBox::information(0, "OpenGL samplebuffers",
                                  "This system does not support OpenGL.");
         return 0;
     }

     GLWidget widget(0);

     if (!widget.format().sampleBuffers()) {
         QMessageBox::information(0, "OpenGL samplebuffers",
                                  "This system does not have sample buffer support.");
         return 0;
     }

     widget.resize(640, 480);
     widget.show();

     return a.exec();
 }