Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uflorida!haven!rutgers!att!lzaz!lznh!lak
From: lak@lznh.UUCP (<10000>Lisa Krauth)
Newsgroups: comp.windows.ms
Subject: Re: Closing Down MS_DOS Executive
Message-ID: <2012@lznh.UUCP>
Date: 25 Apr 89 17:57:51 GMT
Reply-To: lak@lznh.UUCP (<10000>Lisa Krauth)
Distribution: na
Organization: AT&T, Lincroft, NJ
Lines: 6

I got this solution from Microsoft Tech Support:

	PostMessage((HWND)0xffff, WM_SYSCOMMAND, SC_CLOSE, (LONG)0);

Apparently the specified window handle, (0xffff), will close all windows
that are currently running.