Here is a list of all topics with brief descriptions:

Adaptors	Adaptors are functors that alter the signature of a functor's operator()()
bind(), bind_return()	Sigc::bind() alters an arbitrary functor by fixing arguments to certain values
compose()	Sigc::compose() combines two or three arbitrary functors
exception_catch()	Sigc::exception_catch() catches an exception thrown from within the wrapped functor and directs it to a catcher functor
hide(), hide_return()	Sigc::hide() alters an arbitrary functor in that it adds a parameter whose value is ignored on invocation of the returned functor
retype(), retype_return()	Sigc::retype() alters a sigc::pointer_functor, a sigc::mem_functor or a sigc::slot in that it makes C-style casts to the functor's parameter types of all parameters passed through operator()()
track_obj(), track_object()	Sigc::track_object() tracks trackable objects, referenced from a functor
Functors	Functors are copyable types that define operator()()
Slots	Slots are type-safe representations of callback methods and functions
mem_fun()	Mem_fun() Creates a functor from a pointer to a method
ptr_fun()	Ptr_fun() is used to convert a pointer to a function to a functor
Signals	Use sigc::signal::connect() with sigc::mem_fun() and sigc::ptr_fun() to connect a method or function with a signal