formatting a TreeView Column

[danny van elsen <danny_van_elsen village uunet be>]

hello all,

when I define a column of a TreeView to be an integer (in gtkmm, but 
the question is the same for plain gtk):

Gtk::TreeModelColumn<int> col_offset;

can I use a formatting function to show the rows in hexadecimal?

or do I have to translate myself, and define the column to be a string?

greetings,
D.!