TreeView Queries

[Matt Galloway <matt galloway me uk>]

Hey,

I've just started gtkmm programming and I have a couple of queries 
regarding Gtk::TreeView. They are as follows:

1) Is there anyway I can set the columns to have central alignment 
within the columns? i.e. Like this:
  Col 1  |  Col 2
    8    |   455
  Instead of:
  Col 1  |  Col 2
  8      |  455

2) Is there anyway I can set the width of the columns at startup? I 
don't want the user to be able to change them and that's fine, I've got 
that bit done.

Any help would be much appreciated!

Many thanks,
Matt Galloway