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

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    ** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
    **
    ** This file is part of the example classes of the Qt Toolkit.
    **
    ** Licensees holding valid Qt Preview licenses may use this file in
    ** accordance with the Qt Preview License Agreement provided with the
    ** Software.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    ** information about Qt Commercial License Agreements.
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    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
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    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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    #include <QtGui/QApplication>
    #include <QtGui/QMessageBoxEx>
    #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()) {
            QMessageBoxEx::information(0, "OpenGL samplebuffers",
                                     "This system does not support OpenGL.");
            return 0;
        }

        GLWidget widget(0);

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

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

        return a.exec();
    }


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Qt 4.2.0-tp1