> Do you have a pointer to some introductory reading on signals?

Lars posted the http address of the boost::signals documentation a few
days ago. If you ask him nicely...

The implementation details are a little different to SigC's, but I
believe that the boost library was built with close reference to the SigC one. 
Moreover, the basic idea is pretty simple and common to both.

> Can several insets "listen" to the same signal?

Yes. The "connections" are nothing more than pointers to either global
functions or class methods. They are effectively stored in a list. I
understand that the boost library will allow you to call slots in a
defined order if you want but that usually the order of calling is
random. Experience suggests that SigC just loops over a list. Not that
this should be an important point...

Angus

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