The Agent Toolkit comprises C++ and CLIPS classes with approximately the same functionality.
The interprocess communication classes are based on the wxWindows DDE classes. You may wish to review the wxServer, wxClient and wxConnection classes at this point (see the wxWindows manual). The basic idea is that your server and client applications create server and client objects respectively, and a connection object is created at either end of a connection whenever a connection is made. Member functions of the connection object are used to initiate data exchange with the other program, and the connection object receives messages sent from the other end of the connection. Multiple connections per server or client are possible.
Creating an agent server
Creating an agent client
Passing and receiving KQML expressions