QTreeWidget::visualItemRect() only returns rect for first column

The documentation for QTreeWidget::visualItemRect() states: "Returns the rectangle on the viewport occupied by the item at item."
So it should return the area occupied by all columns. The code below shows that only the rect of the first column is returned instead. This is because in the function implementation, it reads:

return visualRect(d->index(item));

The default value for the second parameter is 0, meaning first column.

// -------------------------------------------------
#include <QtGui>

class TreeWidget : public QTreeWidget
{
public:
TreeWidget( QWidget * parent = 0 ) : QTreeWidget( parent )

{ setColumnCount( 2 ); QStringList list; list << "*" << "*"; item = new QTreeWidgetItem( list ); addTopLevelItem( item ); }

protected:
virtual void paintEvent( QPaintEvent * e )

{ QTreeWidget::paintEvent( e ); QPainter painter( viewport() ); painter.setPen( Qt::red ); painter.drawRect( visualItemRect( item ) ); }

private:
QTreeWidgetItem * item;
};

class MainWindow : public QMainWindow
{
public:
MainWindow() : QMainWindow()

{ QWidget * centralWidget = new QWidget; setCentralWidget( centralWidget ); QVBoxLayout * layout = new QVBoxLayout; centralWidget->setLayout( layout ); TreeWidget * tree = new TreeWidget( this ); layout->addWidget( tree ); }

};

int main( int argc, char * argv[] )
{
QApplication app( argc, argv );
MainWindow mainWindow;
mainWindow.show();
return app.exec();
}
// -------------------------------------------------