Message-ID:	<3B0D50EC.80EBC0A9@cyberoptics.com>
From:	Eric Rudd <rudd AT cyberoptics DOT com>
Organization:	CyberOptics
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Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Turning off monitor ?
References:	<3 DOT 0 DOT 1 DOT 32 DOT 20010523120828 DOT 006b3ad4 AT wingate>
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Date:	Thu, 24 May 2001 13:20:28 -0500
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

"Nimrod A. Abing" wrote:

> >Hi,
> >does somebody have idea how to turn off monitor (set it to sleep mode)  from
> >DJGPP program (and then turn it on ?)

I haven't tried to do it from DJGPP, but here is a code fragment from a Borland
C++ app I use:

   _AX = 0x4F10;
   _BL = 0x01;
   _BH = mode;
   geninterrupt(0x10);

mode: 0=on, 1=standby, 2=suspend, 4=off.  It's probably straightforward to
translate this to DJGPP-compatible calls.  I got the info from Ralf Brown's
interrupt list:

   http://www.ctyme.com/rbrown.htm

You should be aware that some interesting things can happen if you attempt to use
alt-tab to switch back to Windows while the monitor is sleeping.  Hope this
helps.

-Eric Rudd
rudd AT cyberoptics DOT com

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