libsigc++ Typesafe callback framework for C++ libsigc++ implements a typesafe callback system for standard C++. It allows you to define signals and to connect those signals to any callback function, either global or a member function, regardless of whether it is static or virtual. libsigc++ is also used by glibmm and gtkmm to wrap Glib and GTK+ signals. C++ Murray Cumming murrayc Kjell Ahlstedt kjellahl