Use addItems or insertItems member function of QComboBox. //notice there is an s in the end for the functions that takes a QStringList argument: it's add/insert Items
LE: don't pass the address of your QStringList, the function takes a reference to a QStringList object, not a pointer, use: ui->QComboBox->insertItems(0, sequence_len); //no & before sequence_len
Complete example of filling QComboBox (considering that tr()
is properly setup):
QStringList sequence_len = QStringList() << tr("1") << tr("2") << tr("3") << tr("4") << tr("5");
//add items:
ui->QComboBox->addItems(sequence_len);
//insert items into the position you need
//ui->QComboBox->insertItems(0, sequence_len);