#include <QtGui/QApplication>
#include <osgViewer/Viewer>
#include <osgGA/TrackballManipulator>
#include <osgQt/GraphicsWindowQt>
#include <osg/ShapeDrawable>
#include <osg/MatrixTransform>
#include <osgManipulator/TabBoxDragger>
#include <osgGA/StateSetManipulator>
#include <osgViewer/ViewerEventHandlers>
#include <osgDB/ReadFile>
int main( int argc, char** argv )
{
QApplication app(argc, argv);
osgQt::initQtWindowingSystem();
osg::Group* sceneroot = new osg::Group;
sceneroot->addChild(osgDB::readNodeFile("cow.osg"));
osg::ref_ptr<osgViewer::Viewer> viewer = new osgViewer::Viewer;
viewer->addEventHandler( new osgGA::StateSetManipulator(viewer->getCamera()->getOrCreateStateSet()) );
viewer->addEventHandler(new osgViewer::StatsHandler);
viewer->setSceneData( sceneroot );
viewer->setCameraManipulator( new osgGA::TrackballManipulator );
osgQt::setViewer( viewer.get() );
osgQt::GLWidget* glw = new osgQt::GLWidget;
osgQt::GraphicsWindowQt* graphicswin = new osgQt::GraphicsWindowQt(glw);
viewer->getCamera()->setViewport( new osg::Viewport(0, 0, glw->width(), glw->height() ) );
viewer->getCamera()->setGraphicsContext( graphicswin );
glw->show();
return app.exec();
}