_J_>Platform SDK: Windows System Information
_J_>Receiving Shutdown Notification
_J_>Applications with a window and message queue receive shutdown notification through the WM_QUERYENDSESSION message.

_J_>Console applications receive shutdown notification in their handler routines. To register a console handler, use the SetConsoleCtrlHandler function.

_J_>Service applications receive shutdown notification in their handler routines. To register a service control handler, use the RegisterServiceCtrlHandlerEx function.