Unsolicited checkboxes in QTableView

[MattPhillips]

Hi,

I'm using QAbstractTableModel/QTableView to display a table of numeric data stored as strings that have been cast to QVariant--that is, in a vector<QVariant> in my QAbstractTableModel subclass. When I show the data, in every cell there is a checkbox in tri-state mode--checked when the value is 2, darkened when it is 1, and empty otherwise.
In no place did I (explicitly) 'ask' for this checkbox, I just want to display the data in the cell all by itself. Here is the code I use to set the QTableView properties:

(DataTable is a QWidget, saTableModel is my QAbstractTableModel subclass)

DataTable::DataTable(QWidget* parent, saTableModel* _satm) : QWidget(parent), satm(_satm)
{
    QVBoxLayout* layMain = new QVBoxLayout;
    tblv = new QTableView(this);
    layMain->addWidget(tblv);
    setLayout(layMain);
 
    SetUpTableView();
 
    hdrv = new QHeaderView(Qt::Horizontal,tblv);
    tblv->setHorizontalHeader(hdrv);
    hdrv->resizeSections(QHeaderView::ResizeToContents);
 
    tblv->show();
}
void DataTable::SetUpTableView()
{
    tblv->setModel(satm);
    tblv->setEditTriggers(QAbstractItemView::NoEditTriggers);
    tblv->setAlternatingRowColors(true);
    QItemSelectionModel* select = new QItemSelectionModel(satm);
    tblv->setSelectionModel(select);
    tblv->setSelectionBehavior(QAbstractItemView::SelectRows);
}

DataTable::DataTable(QWidget* parent, saTableModel* _satm) : QWidget(parent), satm(_satm)
{
    QVBoxLayout* layMain = new QVBoxLayout;
    tblv = new QTableView(this);
    layMain->addWidget(tblv);
    setLayout(layMain);

    SetUpTableView();

    hdrv = new QHeaderView(Qt::Horizontal,tblv);
    tblv->setHorizontalHeader(hdrv);
    hdrv->resizeSections(QHeaderView::ResizeToContents);

    tblv->show();
}
void DataTable::SetUpTableView()
{
    tblv->setModel(satm);
    tblv->setEditTriggers(QAbstractItemView::NoEditTriggers);
    tblv->setAlternatingRowColors(true);
    QItemSelectionModel* select = new QItemSelectionModel(satm);
    tblv->setSelectionModel(select);
    tblv->setSelectionBehavior(QAbstractItemView::SelectRows);
}

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Anybody know why I'm getting unwanted checkboxes?

Best,
Matt