libsigc++ -- The Typesafe Callback Framework for C++ General information: 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 used by gtkmm to wrap the GTK+ signal system. It does not depend on GTK+ or gtkmm. Further information is available on the libsigc++ project home page: http://libsigc.sourceforge.net/ License information: Distribution of library and components is under the LGPL as listed in the file COPYING. Examples and tests are Public Domain. Contact information: Maintainer: mailto: murrayc@murrayc.com Maillist: mailto: libsigc-list@gnome.org Homepage: http://libsigc.sourceforge.net Online reference documentation: https://developer.gnome.org/libsigc++/unstable/ Download: http://ftp.gnome.org/pub/GNOME/sources/libsigc++/ https://download.gnome.org/sources/libsigc++/ Git: https://git.gnome.org/browse/libsigcplusplus/ Overview of the distribution: docs/ documentation on the signal system docs/reference/ reference documentation examples/ examples of various signal functions sigc++/ source for library sigc++/functors/ source for library (various functors) sigc++/adaptors/ source for library (various adaptors) build/ auxiliary files for building tests/ programs testing and verifying proper behaviour MSVC_Net2017/ project files for building the library with MSVC++ 2017 Compatibility: Compatible compilers must support C++14, such as the decltype(auto) specifier.