gistfile1.txt

void TableDialog::on_subComboBox_currentIndexChanged(int index)
{
    int maxCount = 0;
    auto itemmodel = static_cast<QStandardItemModel*>(ui->tableView->model());
    if (!itemmodel)
    {
        return;
    }
    QComboBox* comboBox = NULL;
    if (NULL != (comboBox = qobject_cast<QComboBox*>(this->sender())))
    {
        int currentColumn = comboBox->property("currentColumn").toInt();
        if (currentColumn >= 0 && currentColumn < itemmodel->columnCount())
        {
            if (index > 0 && index <= m_columnList.count())
            {
                QList<QVariant> dataList = m_datasList[index - 1].toList();
                if (!dataList.isEmpty())
                {
                    m_pageCount=dataList.count()%m_linesOfPage>0?(dataList.count()/m_linesOfPage)+1
                                                               :dataList.count()/m_linesOfPage;


                    if(m_pageCount==0)
                    {
                        m_pageCount=1;
                    }

                    if (itemmodel->rowCount() < dataList.count())
                    {
                        maxCount= dataList.count();
                        //                        itemmodel->setRowCount(dataList.count());
                    }

                    //                    for (int i = 0; i < dataList.count(); ++i)
                    for (int i = 0;i < m_linesOfPage &&i < dataList.count()-(m_currentPageIndex-1)*m_linesOfPage; ++i)

                    {
                        itemmodel->setItem(i, currentColumn, new QStandardItem(dataList[i+(m_currentPageIndex-1)*m_linesOfPage].toString()));
                        itemmodel->item(i, currentColumn)->setTextAlignment(Qt::AlignCenter);
                    }
                }
            }
            else
            {
                for (int i = 0; i < itemmodel->rowCount(); ++i)
                {
                    itemmodel->setItem(i, currentColumn, new QStandardItem(""));
                }
            }

            ui->pagesCountLabel->setText(QString(PageCountLabel).arg(m_pageCount));
            ui->label_2->setText(QString(DefaultSearchLabel).arg(maxCount));
        }
    }
}