MsgCommunicator: Delphi Instant Messaging (IM) SDK
for easy creation of custom messenger system
Determines if user specified by UserID is in contact list of the user specified by OwnerUserID.
function IsUserInContacts(UserID,OwnerUserID: Cardinal): Boolean;
Call IsUserInContacts to check if the user with specified UserID identifier is in contact list of the user specified by OwnerUserID.
IsUserInContacts returns True if such user present in contact list; otherwise returns False.