[Qt-interest] QAbstractItemModel::setHeaderData() and headerData()

[j]

hi there,

Im a bit confused as to how to set the header data
of a model. I have a class A that inherits from both
QAbstractTableModel and QTableView that has an
initialisation function in which I call
...
setHeaderData( 0, Qt::Horizontal, QObject::tr("property") );
...
I did not implement the headerData function.
unfortunately, the header shows '0' in section 0,
where I expect it to display 'property'.

when I do implement headerData like this:

QVariant A::headerData( int section,
     Qt::Orientation orientation,
     int role ) const
{
     if( role == Qt::DisplayRole )
     {
         switch( section )
         {
                 case 0: return( QString( "property" ) );
                 case 1: return( QString( "type" ) );
                 case 2: return( QString( "value" ) );
         }
     }
     return QAbstractItemModel::headerData( section, orientation, role );
}

and omit the setHeaderData call in the initialisation routine,
all is fine, and the header displays what I expect.

what's going on ?

Jonathan