gnome-sharp 2.8.0.0 Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details.

Are called as a result of signals being emitted from a menu or tool bar item

The user data that was part of the instance. The name of the emitted signal. The user data that was part of the relevant instance. Delegates of this type are given as the first element of a instance. System.Delegate System.Void