17.2.1 Opening and closing conversations

A LispWorks client can open a conversation by using dde-connect , which takes a service designator and a topic designator as its arguments. If successful, a conversation object is returned which can be used to refer to the conversation. Conversations are closed by the LispWorks client at the end of a transaction by using dde-disconnect .

dde-connect

Function

The function dde-connect attempts to create a conversation with a DDE server specified by server , on the topic given by topic .

dde-disconnect

Function

The function dde-disconnect disconnects the conversation object specified by conversation . The conversation may no longer be used.

Another method for managing conversations uses with-dde-conversation to bind a conversation with a server across a body of code. If no conversation is available for with-dde-conversation , then one is automatically opened, body is executed, and then the conversation is closed.

with-dde-conversation

Macro

with-dde-conversation (conv
 service
 topic
 &key errorp
 new-conversation-p)

                      &body body

The macro with-dde-conversation dynamically binds a conversation with a server across the scope of a body of code specified by body . The argument conv is bound to a conversation with the server specified by service , and the topic specified by topic .