MsgCommunicator: Delphi Instant Messaging (IM) SDK
for easy creation of custom messenger system
Occurs when user presented in your contact list sets connection to a server.
type TMsgOnUserOnLine = procedure (const UserID: Cardinal) of object;
property OnUserOnLine: TNotifyEvent;
OnUserOnLine occurs when the user from your contact list sets connection to a server.
UserID is an ID of the user which is connecting to a server.