Components that produce data must specialize:

boost::signals::is_component

Boost.TypeTraits style trait - true for data-producing components.

boost::signals::get_signal_type

Metafunction returning the underlying boost::signal type of the produced data (currently, underlying signal signature). If the component is a class with a type signal_type, it is already supported.

boost::signals::get_signal

Function object returning a reference to the underlying signal.

Components that consume data must specialize:

boost::signals::get_slot

Function object returning a boost::function of the underlying slot.