MFC Library Reference
DECLARE_EVENTSINK_MAP
An OLE container can provide an event sink map to specify the events your container will be notified of.
DECLARE_EVENTSINK_MAP( )
Remarks
Use the DECLARE_EVENTSINK_MAP macro at the end of your class declaration. Then, in the .CPP file that defines the member functions for the class, use the BEGIN_EVENTSINK_MAP macro, macro entries for each of the events to be notified of, and the END_EVENTSINK_MAP macro to declare the end of the event sink list.
For more information on event sink maps, see the article ActiveX Control Containers.
See Also
MFC Macros and Globals | BEGIN_EVENTSINK_MAP | END_EVENTSINK_MAP | ON_EVENT | ON_PROPNOTIFY