Something
public text v1 · immutable QTextStream bazaStream(&baza);
bazaStream.setEncoding(QTextStream::Latin1);
QStringList ulice_z_bazy;
QString linia = bazaStream.readLine();
linia.replace(linia.at(3).latin1(), "\n"); // linia.at(3) is "\0"
ulice_z_bazy.split("\0", linia, TRUE); // does not work
okno_glowne.ComboBox2->insertStringList(ulice_z_bazy);