An Open ServerConnect application uses a TDS-CURSOR-EVENT handler to handle cursor requests. The handler includes code to detect which of the cursor commands was issued and to respond with the appropriate information.
The first task inside the event handler is to determine the current cursor and the cursor command that triggered the TDS-CURSOR-EVENT. It does this by calling TDCURPRO with the ACTION argument set to TDS-GET. Open ServerConnect fills the CURSOR-COMMAND field of the Open ServerConnect application CURSOR-DESC structure with the command type.
The application can then decide what other information it needs to retrieve, if any, as well as what data to send back to the client. In some cases, it may need to retrieve parameter formats and parameters; in others, it may want to know the status of the current cursor and the number of rows to fetch. It may only need to send back a TDS-CURSOR-INFO command, or it may need to send back result data or return parameters.
