Signal of a button dynamically created

[Borja Mon Serrano <borjamonserrano gmail com>]

Hi,

I'm building a popup window that has a Gtk::Grid inside it. The first row
has a form with three Gtk::Entry and a button to add the information to the
program. The rest of the rows has the items created before in that way
(just with Gtk::Label) and a button to remove the information. Like this:

|--------------------------------------------------------------------------------------|
| Gtk::Entry | Gtk::Entry | Gtk::Entry | Gtk::Button (add)      |
|--------------------------------------------------------------------------------------|
|----------------------- rows dynamically added --------------------------|
| Gtk::Label | Gtk::Label | Gtk::Label | Gtk::Button (remove) |
|--------------------------------------------------------------------------------------|
| Gtk::Label | Gtk::Label | Gtk::Label | Gtk::Button (remove) |
|--------------------------------------------------------------------------------------|
| Gtk::Label | Gtk::Label | Gtk::Label | Gtk::Button (remove) |
|--------------------------------------------------------------------------------------|
...

The point here is: how can I know what button was pressed in order to
remove a row?

Thanks! :)

Borja.