#include <QtSql/qsqldriver.h>
#ifndef QSQLDRIVER_H
class QSqlDriver: public QObject{
   /* Some contents are skipped to improve readability */
   public: enum DriverFeature{
      /* ... */
      PreparedQueries = 4,
      /* ... */
   };
   /* ... */
};
#endif // QSQLDRIVER_H