I'm using a QTableView in a QTreeWidget.

Here is my code (refresh part) :

// window.cpp
void refresh(){
        this->cordonDAO->refreshData(this->commande->getNumAffaire());
        this->treeWidgetCustom->setModel(cordonDAO->getModelCordonParent(), cordonDAO->getListeModel());
}

// customQTreeWidget.cpp

void CustomQTreeWidget::setModel(QSqlQueryModel* modelParent, QMap<QString,QSqlQueryModel*>* modelFils){
    this->clear();
    for(int i=0;i<modelParent->rowCount();i++){
        QString refCordon=modelParent->data(modelParent->index(i,0)).toString();
        QString qte=modelParent->data(modelParent->index(i,1)).toString();
        QTreeWidgetItem* item=new QTreeWidgetItem(this,QStringList() << refCordon << qte);
        item->setFlags(Qt::ItemIsEnabled);
        this->addTopLevelItem(item);
        QTableView* table=new QTableView();
        table->setModel(modelFils->value(refCordon));
        setTableUI(table);
        QTreeWidgetItem* childItem=new QTreeWidgetItem(item);
        this->setItemWidget(childItem,1,table);
        item->addChild(childItem);
        connect(table,SIGNAL(doubleClicked(QModelIndex)),(secondwindow*)(this->parentWidget()->parentWidget()),SLOT(tableDoubleClicked(QModelIndex)));
    }
}

The QSqlQueryModel is for the TreeWidget, and the QMap contains the QSqlQueryModel for each TableWidget of the TreeWidget.

Here is the result before refresh :

And after :

I found a bug report that is exactly the same problem : QT bug

Thx

Yes you should post your code.

One thing that's strange: are you really using QTableWidget ? Because it already has a model and IIRC you can't change it.