• remove current row.
• disappear immediately.
• changes saved to database.

i have try various strategy to solve problem. and then post it here to find standard guidelines:

*model strategy: *
@ pctypesTableModel->setEditStrategy(QSqlTableModel::OnRowChange);@

// command signal and slot:
@connect(ui->DeleteButton, SIGNAL(clicked()), this, SLOT(removePcType()));@

@void editPcTypeDialog::removePcType() // private slot
{
int row = ui->tableView->currentIndex().row();
//ui->tableView->hideRow(row);

pctypesTableModel->removeRows(row, 1, ui->tableView->currentIndex());
//pctypesTableModel->submit();
//pctypesTableModel->submitAll();

}
@