void TreeComboBox::updateView()
{
QTreeView *v = new QTreeView();
setView( v );
v->setSelectionMode( m_selectionmode );
// don't want to have mouseover select an item
v->disconnect(SIGNAL(entered(QModelIndex)));
QHeaderView *h = v->header();
for ( int i = 0; i < h->count(); ++i ) {
h->setSectionHidden( i, ! m_showcolumns.contains( i ) );
}
h->setVisible( m_showheader );
v->setRootIsDecorated( false );
}
