How can I change the header text of my model based view?

---

Answer:

In order to change the header text of a model based view you need to reimplement headerData() and return the text you want for the relevant section, orientation and row there. See the documentation:

http://doc.trolltech.com/4.3/qabstractitemmodel.html#headerData

The example below demonstrates how this can be achieved:

#include <QtGui>

class Model : public QAbstractTableModel
{
public:
        Model(QObject *parent) 
        {
               QStringList firstRow;
               QStringList secondRow;
               
               for (int i = 0; i < 5; i++ ) {
                      firstRow.insert(i,"Row 1 " + QString::number(i+1));
                      secondRow.insert(i,"Row 2 " + QString::number(i+1));
               }
               
               stringList << firstRow << secondRow;
               
        }
        
        // Returns the number of rows
        int rowCount ( const QModelIndex & parent = QModelIndex() ) const
        {
               return stringList.count();
        }
        
        // Returns the number of columns
        
        int columnCount ( const QModelIndex & parent = QModelIndex() ) const
        {
               return stringList[0].count();
               
        }

        // Returns an appropriate value for the requested section, orientation and role
        QVariant headerData ( int section, Qt::Orientation orientation, int role) const 
        {
               if (role ==Qt::DisplayRole ) {
                      if (section == 0 && orientation == Qt::Vertical ) {
                      return QString("First");
                      } else if (section == 1 && orientation == Qt::Vertical ) {
                             return QString("Second");
                      } else {
                             return QVariant();
               }
               } else {
                      return QVariant();
               }
        }
        
        
        // Returns an appropriate value for the requested data.
        // If the view requests an invalid index or if the role is not
        // Qt::DisplayRole, an invalid variant is returned.
        // Any valid index that corresponds to a string for the index's column and row in
        // the stringlist is returned
        
        QVariant data ( const QModelIndex & index, int role = Qt::DisplayRole ) const 
        {
               if (!index.isValid())
                      return QVariant();
               
               if (role != Qt::DisplayRole)
                      return QVariant();
               QStringList list = (QStringList)stringList.at(index.row());
               return list.at(index.column());        
        }
        
private:
        
        QList<QStringList>stringList;
        
};

int main(int argc, char **argv)
{
        QApplication app(argc, argv);
        QWidget widget;
        
        QHBoxLayout *layout = new QHBoxLayout(&widget);
        
        QTableView *tableView = new QTableView(&widget);
        Model *model = new Model(tableView);
        tableView->setModel(model);
        
        layout->addWidget(tableView);
        
        widget.show();
        return app.exec(); 
}