class PostGisViewer: public QMainWindow
{
public:
    PostGisViewer(): QMainWindow()
    {
        QWidget *w = new QWidget();
        this->setCentralWidget(w);
        QgsMapCanvas *canvas = new QgsMapCanvas();
        canvas->useImageToRender(false);
        QVBoxLayout *layout = new QVBoxLayout(w);
        layout->addWidget(canvas);
        QgsDataSourceURI uri;
        uri.setConnection("127.0.0.1", "5432", "gis", "login", "pass", QgsDataSourceURI::SSLdisable);
        uri.setDataSource("public", "myedges", "the_geom", "");
        QgsVectorLayer layer(uri.uri(), "testLayer", "postgres");
        QgsMapLayerRegistry::instance()->addMapLayer(&layer);
        QgsRectangle r(-1.5, -0.6, 1, 1);
        canvas->setExtent(r);
        QgsMapCanvasLayer cl(&layer);
    }
};

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QgsApplication::setPrefixPath("C:/Program Files/QGIS Brighton/apps/qgis", true);
    QgsApplication::initQgis();
    PostGisViewer wnd;
    wnd.show();
    int retval = a.exec();
    QgsApplication::exitQgis();
    return retval;
}

INCLUDEPATH +=  "{ROOT OF OSGEO4W INSTALL}include"
INCLUDEPATH +=  "{ROOT OF OSGEO4W INSTALL}\apps\qgis\include"

LIBS += -L"{ROOT OF OSGEO4W INSTALL}\apps\qgis\lib" -lqgis_core -lqgis_gui

DEFINES+=CORE_EXPORT=
DEFINES+=GUI_EXPORT=