2 For use with Qt4, read next manuals:
3 1. http://doc.qt.nokia.com/latest/signalsandslots.html#using-qt-with-3rd-party-signals-and-slots
4 2. http://www.boost.org/doc/libs/1_45_0/doc/html/signals/s04.html
5 3. only for Russian-speaking guys:
6 http://hatred.homelinux.net/wiki/zhurnal/2010-12-13_14.38_boost.signals_i_qt4