Or better:

    iter = @store.append
    iter[0] = twi.message()
    iter[1] = 
Gdk::Pixbuf.new('/home/demas/settings/awn_icons/emacs.png')

    ....

    user_renderer = Gtk::CellRendererPixbuf.new
    col = Gtk::TreeViewColumn.new
    col.title = "pic"
    col.pack_start(user_renderer, false)
    col.add_attribute(user_renderer, 'pixbuf', 1)
-- 
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