#include <QtSql/qsqldriver.h>
#ifndef QSQLDRIVER_H
class QSqlDriver: public QObject{
   /* Some contents are skipped to improve readability */
   public: virtual bool open(class QString const & db, class QString const & user = QString::QString(), class QString const & password = QString::QString(), class QString const & host = QString::QString(), int port = -1, class QString const & connOpts = QString::QString()) = 0;
   /* ... */
};
#endif // QSQLDRIVER_H