qtablewidget - Qt QCombobox currentIndexChanged signal -

how itemindex 1 combobox , send combobox? both comb's created in qtablewidget

qcombobox *comboa = static_cast<qcombobox*>(ui->tablewidget->cellwidget(0,0)); qcombobox *combob = static_cast<qcombobox*>(ui->tablewidget->cellwidget(0,1)); qobject::connect(comboa, signal(currentindexchanged(int)),combob, slot(setcurrentindex(int))); 

but code not work. rather, necessary define new methods pointers.