I create some comboBox with designer, and I append them to te comBoList (<QCombobox*>).

comboList.append(ui->comboBox_30);
comboList.append(ui->comboBox_19);

but if I want use connect:

for(int i=0; i<15; i++){ connect(comboList.at(i),SIGNAL(currentIndexChanged (int)),this,SLOT(this->comboChange()));
}

I get this error message: