TreeView Row recieve click signal

[Damianos Mylonakis <danmylonakis gmail com>]

Hello,

I am trying to recieve a signal when there is a click event on a 
specific row of a TreeView with a ListStore model.
Here is a screenshot of the application to make it more clear 
http://sites.google.com/site/tsigien/taratsa/Screenshot-Pholix.png

In a few words, what i want is when double click is done on a row, to 
connect to this signal
and move to this directory ( its supposed to be a file manager )

I tried to find such a signal on the Gtk::TreeViewColumn documentation, 
but nothing there.
I further read that each row is not able to recieve X events, thus cant 
handle click event, but TreeView can.
I can capture on_button_press_event from TreeView, but then i wouldnt 
know which specific row was clicked, Maybe i could find out
from x,y coords but i think that is too hard.

Another idea is to have the ListStore contain EventBox'es with Labels 
inside, instead of just Labels, so i can recieve the events from the 
EventBox,
but i cant find how to override the widget contained in the row.

Any suggestion?
Thank you.