How does Gtk::TreeView::Selection::select() work?

[José Alburquerque <jaalburquerque cox net>]

Hi, I have a quick question;  How does the 
Gtk::TreeView::Selection::select() method work?  Is it as if a click was 
done on a row with the mouse or different?  I've noticed something weird 
in my program and want to make sure I'm not doing something wrong: 

I've connected a slot to listen for TreeView selection changes using 
Gtk::TreeView::Selection::signal_changed().connect(...).  In the 
callback member function I get the current selection (Gtk::TreeIter), 
try to access the row and then get a column in the row (by dereferencing 
and indexing the iterator with a Gtk::TreeModelColumn).  If I click the 
row in the TreeView with the mouse, all works as expected, but if I call 
"select()" from within the program, the slot gets called, but accessing 
the row (ie, dereferencing) is impossible.  Am I doing something wrong 
somewhere?  Thanks.

-Jose