main.cpp Example File

declarative/shadereffects/main.cpp
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 #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();
 }