open-server

Arguments: &key name topics

Establishes the current Lisp process as a DDE server. Any DDE client program can thereafter (until close-server or close-dde is called) connect to this server by specifying the service name indicated by the name argument and one of the topics indicated by the topics argument.

A service name or topic may be either a string or a symbol, though they are always passed between programs as strings. When a symbol, its symbol-name is used to communicate with other programs.

The name argument defaults to the value of *service-name*, which initially is the symbol :allegro, meaning that a DDE client program would specify the service name as "allegro" to connect to the Lisp DDE server. The topics argument defaults to the value of *service-topics*, which initially is the list of symbols (nil :system, :eval), meaning that a DDE client program would specify either "nil", "system", or "eval" as the topic in order to connect to the Lisp DDE server.

The functions service-name and service-topics may be called later to retrieve the values that were most recently specified as the open-server arguments in a particular process.

Any Lisp process can act as only a single DDE server, though DDE client programs may each open multiple client ports to it.

See cg-dde.htm for information about DDE support in Common Graphics.

Copyright (c) 1998-2002, Franz Inc. Oakland, CA., USA. All rights reserved.
Documentation for Allegro CL version 6.2. This page has had significant revisions compared to the 6.1 page.
Created 2002.2.26.