Qt QCombobox中内容居中显示

QStandardItemModel* model =  static_cast<QStandardItemModel*>(ui->combobox->view()->model());
if(model)
{
    for(int i = 0; i < model->rowCount(); i ++)
    {
        if(model->item(i))
            model->item(i)->setTextAlignment(Qt::AlignCenter);
    }
}

 或

    for (int i = 0; i < ui->comboBox_DewellTime->count(); ++i)
    {
        ui->comboBox_DewellTime->setItemData(i, Qt::AlignCenter, Qt::TextAlignmentRole);
    }