GtkTreeView questions

[Mike <maddoc en com>]

Hello,

I'm finally having a look at the new GTK+ 2 stuff and I have a couple 
questions:

1) How do I hide a column title? I've got a treeview with 3 columns and I 
want to have just one title that spans all three columns.

2) gtk_tree_view_column_new_with_attributes() sets attributes yet I can't 
seem to find a list of what those attributes can be, can someone point to 
where they are listed.

Thanks,
Mike