As with most "legacy" MSDN pages, the page for ReportEvent has too little information for me to make much sense of it. I've tried searching, but can't find a good, clean, simple example of the function's usage. Could anyone suggest one?
I ended up using this:
HANDLE eventLog;
WORD type;
const char* msg;
// ... snip ...
ReportEvent(eventLog, type, 0, 1, NULL, 1, 0, &LPCTSTR(msg), NULL);
Seems to work well enough.