#include <QtOpenGL/qgl.h> #ifndef QGL_H class QGLWidget: public QWidget{ /* Some contents are skipped to improve readability */ public: explicit QGLWidget(class QGLFormat const & format, class QWidget* parent = 0, class QGLWidget const * shareWidget = 0, Qt::WindowFlags f = 0); /* ... */ }; #endif // QGL_H