Capturing SessionEnding without Main form

[__DanC__]

I need to capture the SessionEnding event in my C# app, this worked fine by adding a handler to the SystemEvents.SessionEnding event when I had message loop on my main thread. Unfortunately that is now not the case, I no longer have a message loop and now I don't get the notification. I have tried creating a message-only window to capture the WM_ENDSESSION/WM_QUERYENDSESSION messages but these are only sent to top-level windows and not message-only windows. So I tried using SetWindowsHookEx to hook WH_CALLWNDPROC which still does not send the WM_ENDSESSION message, then I tried SetConsoleCtrlHandler which also doesn't seem to work. Does anyone have any ideas on how I can trap this message without a main form? Thanks.