[sigc] getting number of connected slots

[Roel Vanhout <roel riks nl>]

Hi all,

Sorry if this is in the documentation somewhere, I couldn't find it.
I'm writing a library that exposes a few signal objects that users of 
the library can connect to. Now I have a situation where I want to do a 
default operation if the user of the library hasn't connected a slot to 
one of those signals. Is there a way to get the number of slots that are 
connected to a signal? Are there any other ways I can do this? Thanks.


cheers,

roel