9.1 Command Completions and Events

The following messages are sent to indicate:

• the completion of an asynchronous command, or

• the occurrence of an unsolicited event (execute, service, user, or system events).

All these messages have the same definition:
wParam: not used
lParam: points to a WFSRESULT data structure

WFS_<message_name>
wParam;   /*  not used  */
lParam = LPWFSRESULT lpWFSResult;