A server needs to respond to the following events:
Event  | 
Description  | 
A new conversation has been established.  | 
|
Partner is requesting data.  | 
|
Partner is acknowledging receipt of data(positive).  | 
|
Partner is acknowledging receipt of data(negative).  | 
|
Partner is terminating. DDE_ERROR An error has been encountered.  | 
Some servers also respond to the remaining events, in addition to, or in place of DDE_REQUEST:
Event  | 
Description  | 
Client wants commands executed.  | 
|
Client is sending data to the server.  | 
|
Client wants to establish an advise state (or hot link).  | 
|
Client wants to terminate an advise state (or hot link).  |