#include <QtGui>
#include <QApplication>
#include <QTableWidget>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    QTableWidget tbl(5,5);
    QTableWidgetItem *tblItem = 0; // ordinary cell item
    const Qt::ItemFlags itemFlags( Qt::ItemIsEnabled | Qt::ItemIsSelectable );

    for (int r = 0; r < 5; r++)
    {
        for (int c = 0; c < 5; c++)
        {
            tblItem = new QTableWidgetItem();
            tbl.setItem(r, c, tblItem);
            if (c != r ) {
                tblItem->setFlags(itemFlags);
            } else {
                tblItem->setFlags(Qt::NoItemFlags);
                tblItem->setData(Qt::DisplayRole, "flag 0");
            }
        }
    }
    tbl.setSelectionMode(QAbstractItemView::MultiSelection);
    tbl.resize(900, 600);
    tbl.show();

    tbl.selectColumn(2);
    tbl.selectColumn(3);

    qDebug() << "Initial Selection";

    qDebug() << "    2" << tbl.selectionModel()->isColumnSelected(2, QModelIndex());
    qDebug() << "    3" << tbl.selectionModel()->isColumnSelected(3, QModelIndex());

    tbl.selectRow(2);

    qDebug() << "Row 3 selected";
    qDebug() << "    2" << tbl.selectionModel()->isColumnSelected(2, QModelIndex());
    qDebug() << "    3" << tbl.selectionModel()->isColumnSelected(3, QModelIndex());

    tbl.selectRow(3);

    qDebug() << "Row 3 selected";
    qDebug() << "    2" << tbl.selectionModel()->isColumnSelected(2, QModelIndex());
    qDebug() << "    3" << tbl.selectionModel()->isColumnSelected(3, QModelIndex());


    return a.exec();
}