From: Kevin Hise <NOkevinhSPAM AT ridgecrest DOT ca DOT us>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Windows trashes my 800x600 graphics mode program.
Date: Wed, 28 Apr 1999 14:36:43 -0700
Organization: Cyplex, Inc.
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Your confusing my brain...is this a interrupt that I hook/monitor in my
code to detect when Windows has switched me into the background?  Or is
it a function that I call?  Then how am I "notified"?

Kev.

Eli Zaretskii wrote:
> 
> On 25 Apr 1999, Samir Barjoud wrote:
> 
> > > That's the catch: there isn't any (at least AFAIK).  If anybody knows
> > > how to achieve this, I'd certainly like to add that to the FAQ.
> >
> > .................................................................
> > Interrupt 2Fh Function 4001h
> >
> > mov ax, 4001h   ; Notify Background Switch
> > int 2fh
> 
> Did you try to hook these functions?  I think you won't see them called
> in a DPMI DOS session.