from sqlquery to qstringlist

[ditsikts]

try to read a sqlquery, save it into a qstringlist and set it to combobox.
pass compile but combobox is empty.

QStringList cblist;
    QSqlQuery query;
    query.prepare("SELECT lastname FROM employeestuf");
    query.exec();
        while(query.next())
        {
            if (query.isValid())
            cblist<<query.value(0).toString();
        }
 
    ui->comboBox->addItems(cblist);

QStringList cblist;
    QSqlQuery query;
    query.prepare("SELECT lastname FROM employeestuf");
    query.exec();
        while(query.next())
        {
            if (query.isValid())
            cblist<<query.value(0).toString();
        }

    ui->comboBox->addItems(cblist);

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