QTableWidget problem

[MarkoSan]

So, wysota, I've finnaly setup the table view. It is blank rectangle with white background. Now, like your hint was telling me, I used QModelIndex (not subclassed). How do I notify now the model about data source, which is QList of:

typedef struct
{
    qint16 iMerchandizeID;
    QString strMerchandizeName;
    qreal rMerchandizePrice;
    qint16 iMerchandizeQuantity;
    qreal rSubtotal;
} structOrder;

typedef struct
{
    qint16 iMerchandizeID;
    QString strMerchandizeName;
    qreal rMerchandizePrice;
    qint16 iMerchandizeQuantity;
    qreal rSubtotal;
} structOrder;

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And I've setup the view with:

m_pShoppingCartTableView->setShowGrid(false);
    m_pShoppingCartTableView->setModel(m_pShoppingCartModel);
    m_pShoppingCartTableView->setItemDelegate(m_pShoppingCartItemDelegate);
    m_pShoppingCartTableView->horizontalHeader()->hide();
    m_pShoppingCartTableView->verticalHeader()->hide();
    m_pShoppingCartTableView->horizontalHeader()->setMinimumSectionSize(1);
    m_pShoppingCartTableView->verticalHeader()->setMinimumSectionSize(1);

m_pShoppingCartTableView->setShowGrid(false);
    m_pShoppingCartTableView->setModel(m_pShoppingCartModel);
    m_pShoppingCartTableView->setItemDelegate(m_pShoppingCartItemDelegate);
    m_pShoppingCartTableView->horizontalHeader()->hide();
    m_pShoppingCartTableView->verticalHeader()->hide();
    m_pShoppingCartTableView->horizontalHeader()->setMinimumSectionSize(1);
    m_pShoppingCartTableView->verticalHeader()->setMinimumSectionSize(1);

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I've copied this chunk of code from pixelator example and I've reused it. If i comment the first line, I still do not get grid (for instance). Does this mean view is not setup properly?