QT QTableWidgetItem是用户编辑而不是自动填充

    connect(ui->tableWidget,&QTableWidget::itemDoubleClicked,this,&MonitorParaWidget::slot_editor);
    connect(ui->tableWidget,&QTableWidget::itemChanged,this,&MonitorParaWidget::slot_itemCheck);

void MonitorParaWidget::slot_editor(QTableWidgetItem* item)
{
    ui->label_tip->clear();
    m_isUserEditorSuccessful = false;
    m_currentItemText = item->text();
    m_isUserEditor = true;//是用户编辑
}

void MonitorParaWidget::slot_itemCheck(QTableWidgetItem* item)
{
    if(m_isUserEditor)
    {
        QString itemText = item->text();
        if(itemText.contains(QRegExp("^[0-9]*$")))
        {
             m_isUserEditorSuccessful = true;//编辑成功
        }
        else
        {
            item->setText(m_currentItemText);
            m_isUserEditorSuccessful = false;
            ui->label_tip->setText(QObject::tr("failed"));
        }
        m_isUserEditor = false;
    }
}