I tried the Cities example in the book C++ -GUI Programming with Qt 4 first ed., and i tried to set a header data string by using the row

cityModel.setHeaderData(0, Qt::Horizontal, QObject::tr("Name"));

in the main.cpp file.

The code can be compiled and run without any complaints but the added code has not any effects.

The code is
Qt Code: 
  1. #include <QHeaderView>
  2. #include <QTableView>
  3.  
  4. #include "citymodel.h"
  5.  
  6. int main(int argc, char *argv[])
  7. {
  8.     QApplication app(argc, argv);
  9.  
  10.     QStringList cities;
  11.     cities << "Arvika" << "Boden" << "Eskilstuna"  /*<< "Falun"
  12.            << "Filipstad" << "Halmstad" << "Helsingborg" << "Karlstad"
  13.            << "Kiruna" << "Kramfors" << "Motala" << "Sandviken"
  14.            << "Skara" << "Stockholm" << "Sundsvall" << "Trelleborg" */ ; 
  15.     QStringList layers;
  16.     layers << "l1" << "l2" << "l3" << "l4";
  17.  
  18.     CityModel cityModel;
  19.     cityModel.setCities(cities);
  20.     cityModel.setLayers(layers);
  21.  
  22.     QTableView tableView;
  23.     tableView.setModel(&cityModel);
  24.     tableView.setAlternatingRowColors(true);
  25.     tableView.setWindowTitle(QObject::tr("Cities"));
  26.  
  27.     cityModel.setHeaderData(0, Qt::Horizontal, QObject::tr("Name")); // <------
  28.  
  29.     tableView.show(); 
  30.  
  31.     return app.exec();
  32. }
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How should you set and read header data in this case?

teele