Internet Direct (Indy) Version 9.0.1 Beta
TIdIRCServer.OnCommandIsOn
Event handler for the IRC ISON command.

property OnCommandIsOn: TIdIrcOneParmEvent;
Description
OnCommandIsOn is a TIdIrcOneParmEvent event handler that allows the server to respond to the IRC ISON command. ISON is used to determine if a user, or list of users, is/are currently connected to the IRC server.

Parm is a user nickname or space-delimited list of user nicknames. For each nickname in the list, the server adds that to its reply string when the user is connected. The list returned may be empty, the same as the original list, or a subset of the original list in Parm. Parm cannot exceed 512 characters.

ISON may only be processed by the server for the client sending the command, and cannot be passed to other servers for further processing.