Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!uw-june!roper
From: roper@june.cs.washington.edu (Michael Roper)
Newsgroups: comp.windows.ms
Subject: Re: Closing Down MS_DOS Executive
Message-ID: <7995@june.cs.washington.edu>
Date: 25 Apr 89 21:11:07 GMT
References: <2012@lznh.UUCP>
Distribution: na
Organization: U of Washington, Computer Science, Seattle
Lines: 20

Lisa Krauth writes:

> 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.

Or more precisely, using 0xffff as a window handle in either
a PostMessage() or SendMessage() call will cause the message
to be sent to all top-level windows in the system -- including
the MS-DOS Executive.  Unfortunately, this does not solve the
original problem, which was how to exit windows without confronting
the confirmation message box that the Executive puts up.  Sending
the Executive the message suggested is exactly equivalent to
selecting "Close" from the Executive's control menu.

Michael Roper
hDC Computer Corporation