button_press_event signal in GtkCellRendererToggle

[Matí­as Alejandro Torres <torresmat gmail com>]

Hi,

How can i add a GtkCellRendererToggle the button_press_event signal 
without making a new widget?

I have a GtkTreeView with a CheckBox (GtkCellRendererToggle) in it and I 
want the user modify its value by clicking on it. How can I do this?

Thanks in advance. Matias.