This was reported on the Qt Jambi interest mailing list and reproduced with 4.4.0 and 4.4 depot build mid august.

import com.trolltech.qt.gui.*;
import com.trolltech.qt.core.*;

public class ItemModel extends QAbstractTableModel {

public ItemModel()

{ timer = new QTimer(); timer.timeout.connect(this, "addData()"); timer.start(2000); }

public int rowCount(QModelIndex parent)

{ return rows; }

public int columnCount(QModelIndex parent)

{ return 4; }

public Object data(QModelIndex index, int role) {
if (role == Qt.ItemDataRole.DisplayRole)

{ return "col=" + (index.column() + 1) + ", row=" + (index.row() + 1); }

return null;
}

public void addData() {
if (decision)

{ beginInsertRows(null, rows - 1, rows - 1); ++rows; endInsertRows(); }

else

{ beginRemoveRows(null, rows - 1, rows -1); --rows; endRemoveRows(); }

decision = !decision;
}

private int rows = 4;
private QTimer timer;

private boolean decision;

public static void main(String args[])

{ QApplication.initialize(args); QTableView view = new QTableView(); ItemModel model = new ItemModel(); view.setModel(model); view.show(); QApplication.exec(); }

}