Replacement for gtk_tree_set_view_lines

[Jim Harford <harford bluewavelabs com>]

Hi,
I'm trying to display a GtkTree with those familiar vertical lines that 
indicate nesting levels within a tree.  I think there used to be a 
function, gtk_tree_set_view_lines, to do this, but it has been 
deprecated.  How do I do this?  I have looked at the documentation, 
searched the mailing list archives, but I still can't figure it out.

Jim Harford

P.S. - I am brand new to GTK & GNOME, so I would appreciate your patience.