[gtkada] Creating a new signal for an existing widget.

[Arnaud Charlet]

> Is there a way to add a new signal to an existing widget?

I don't think this is a good idea. What you want instead is to
create a new widget that derives from an existing widget, and define new
signals for this new widget.

Everything is explained in a secret document called the GtkAda User's Guide to
create new widgets, and there are many examples showing how to do that.

Arno