From:	Damian Yerrick <Bullcr_pd_yerrick AT hotmail DOT comRemoveBullcr_p>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: gdb problem or just silly me - please help
Organization:	Pin Eight Software http://pineight.8m.com/
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NNTP-Posting-Date:	Wed, 26 Apr 2000 14:11:59 GMT
Distribution:	world
Date:	Wed, 26 Apr 2000 14:11:59 GMT
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

On Wed, 26 Apr 2000 09:56:47 +0200, Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
wrote:

>Damian Yerrick wrote:
>> 
>> On Tue, 25 Apr 2000 11:25:19 +0200 (IST), Eli Zaretskii
>> <eliz AT is DOT elta DOT co DOT il> wrote:
>> 
>> >There's nothing wrong with printf debugging
>> 
>> Unless the printf() family function itself crashes the program.  This
>> happens to me all the time when porting Allegro programs from DJGPP to
>> Windows, as DirectX is somewhat finicky about when the screen can be
>> drawn on.
>
>This simply means that you need to use another function, not the literal
>printf, but the principles remain the same.  For example, when debugging code
>that cannot stand a DOS call, I use cprintf or cputs instead of printf.

That's what I meant when I said "printf() family function."  In
Allegro, I would normally use textprintf(), but any drawing to the
screen under Windows involves calls to DirectX.  To put it another
way, what if DOS required video memory to be "acquired" before it
could be drawn on, and it put a mutex lock on all input until the
program "released" the video memory?

-- 
Damian Yerrick
"I refuse to listen to those who refuse to listen to reason."
See the whole sig: http://www.rose-hulman.edu/~yerricde/sig.html

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