Signals, connecting

[Geoff Finger <gfinger cravegames com>]

I didn't get any response to the specific question, so I'll try restating
the general question. How does one go about finding what signals are
available to connect to for a paticular widget type?

I'm currently trying to find a signal from a spin button that I can use to
determine when the arrows have been clicked (and/or the value changed be
hand) so I can update the screen.

However if there is a general listing of all signals and what widgets they
apply to somewhere, it would be very useful to know about.

thanks