liststore/treestore example with pixbufs that change

[Giuseppe Penone <giuspen gmail com>]

Hi,
In the "programming with gtkmm3" there are many examples regarding the treeview/treestore/liststore
(http://developer.gnome.org/gtkmm-tutorial/unstable/sec-treeview-examples.html.en)

but no one showing the proper way to populate a tree with pixbufs, change them and eventually delete a row with a pixbuf.
If anybody could point me to an example it would be of great help.
Regards,
Giuseppe.