Message-ID:	<38A8B28E.5ACC7422@brandonsd.mb.ca>
From:	N J Chackowsky <chackowsky AT brandonsd DOT mb DOT ca>
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Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: System hangs when I exit my program
References:	<888om7$o0t$1 AT cubacola DOT tninet DOT se>
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Date:	Tue, 15 Feb 2000 01:49:33 GMT
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

I had all kinds of trouble with the computer crashing when using DJGPP
programs and I learned this: that it wasn't DJGPP per se that was
causing the trouble. My computers (several labs worth) would crash
whenever *any* process switched the video mode TO or FROM a DOS mode
screen to a Windows mode screen. The solution (after the usual hair
loss) was to bring up the desktop properties, settings, advanced
properties, performance, and turn hardware acceleration OFF. Since then,
no crashes. Interestingly, this was completely unnecessary on my older
computers with simpler video adapters, say Trident 9660; only the new
ones like QDI Vision.

Nick.


Marcus wrote:
> 
> Hi!
> I have a big problem. My program can't shutdown correct and hangs on
> shutdown. Sometimes the system hangs too. I use VESA 2, a mouse hook and a
> keyboard hook. I think the hooks are the problem since I don't know how to
> quit the mouse hook I do with INT 33 - Ch. But I don't actually know what
> the problem is. Could you help me?? Tell me if I have to show the code. I'm
> a newbie at low level programming but I have to use it.
> 
> Thank you...
> 
> --
> /regards Marcus

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