After you have added a source name to the registry, use the RegisterEventSource function to get a handle of the Application event log, as in the following example, which gets the handle and then adds an event to the logs.
LPSTR aszMsg[] = {
"SamplApp",
};
HANDLE h;
h = RegisterEventSource(NULL, /* uses local computer */
"SamplApp"); /* source name */
if (h == NULL)
ErrorExit("could not register event source");
if (!ReportEvent(h, /* event log handle */
EVENTLOG_ERROR_TYPE, /* event type */
0, /* category zero */
0x1003, /* event identifier */
NULL, /* no user security identifier */
1, /* one substitution string */
0, /* no data */
(LPTSTR *) aszMsg, /* address of string array */
NULL)) /* address of data */
ErrorExit("could not report event");
DeregisterEventSource(h);