1  void MainWindow::on_loadButton_clicked()
2  {
3    QSqlQuery q;
4    q.exec("select * from Student");
5    QSqlQueryModel *qm = new QSqlQueryModel();
6    qm->setQuery(q);
7    SecondWindow *secwin = new SecondWindow();
8    secwin->setWindowTitle("Output Window");
9    QTableView *table = new QTableView();
10   secwin->setCentralWidget(table);
11   table->setModel(qm);
12   secwin->show();
13   db.close();
14 }