#include <QtSql/qsqlquerymodel.h>
#ifndef QSQLQUERYMODEL_H
class QSqlQueryModel: public QAbstractTableModel{
   /* Some contents are skipped to improve readability */
   public: virtual bool insertColumns(int column, int count, class QModelIndex const & parent = QModelIndex::QModelIndex());
   /* ... */
};
#endif // QSQLQUERYMODEL_H