QComboBox -> setModel -> Strange behaviour

[oscar]

Hi,

If I associate a QComboBox to a table with setModel, then I can only manually add one item to this combobox. If I add 2 items, only one empty item appears at the end of the list.
How can I do? (I don't want to put the missing items into the database, I want them to be added dynamically).

Here is the source code:

myModel = new QSqlRelationalTableModel();
myModel->setTable("woundType");
myModel->select();
typeCbx->setModel(myModel);
typeCbx->setModelColumn(2);
typeCbx->insertItem(2, QString(""));
typeCbx->addItem(QString("Ajout/Modification/Suppression"));
typeCbx->addItem(QString("Others")); //if I add this item, only one empty line appears at the end of the combobox

myModel = new QSqlRelationalTableModel();
myModel->setTable("woundType");
myModel->select();
typeCbx->setModel(myModel);
typeCbx->setModelColumn(2);
typeCbx->insertItem(2, QString(""));
typeCbx->addItem(QString("Ajout/Modification/Suppression"));
typeCbx->addItem(QString("Others")); //if I add this item, only one empty line appears at the end of the combobox

To copy to clipboard, switch view to plain text mode 

Thanks for yout help
Regards,
Oscar