From:	Moo-Juice <Ben AT flag DOT demon DOT co DOT uk>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: A few questions
Date:	Sun, 26 Jan 1997 01:52:24 +0000
Organization:	Honest Ron's Car Emporium
Distribution:	world
Message-ID:	<w3dwHNAYjr6yEw1r@flag.demon.co.uk>
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	<Pine DOT SUN DOT 3 DOT 91 DOT 970123164053 DOT 562L-100000 AT is>
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To:	djgpp AT delorie DOT com
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In article <Pine DOT SUN DOT 3 DOT 91 DOT 970123164053 DOT 562L-100000 AT is>, Eli Zaretskii
<eliz AT is DOT elta DOT co DOT il> writes
>
>On Wed, 22 Jan 1997, Moo-Juice wrote:
>
>> but whenever I search through the FAQ I always seem unable to find the
>> relevant information I require... maybe its just me, or maybe it is just
>> obscure headings.
>
>Did you try to use the indices at the end of the FAQ?  If so, and if they 
>seem obscure, I'd like to hear suggestions on how to improve them.

I'll have a look at them, and tell you what I think.  I'm not one of
those to question anybodies documentation layout/construction as it is
not one of my most favourable traits either <g>  But I will have a look
for you.  When people suggested reading the FAQ, which I duely did, I
was looking for something along the lines of 'accessing screen memory -
you do it like this in DJGPP rather than like this in your bog-standard
c/c++ compiler'.

>> 1.  The project I'm working on, will be text only.  For this reason,
>>     I wish to be able to switch between 80x25 & 80x50 video modes. Is
>>     it simple just to support these two modes?  Which calls would I
>>     need to set these, or other text modes?
>
>You should read the library documentation for all the functions of the 
>"conio" family.  From the DOS prompt, type the following words of wisdom:
>
>       info libc func conio

Yes, I looked at them, and for the time being I have indeed used them.
Unfortunately, they do not meet my requirements.  I basically have to
use ScreenPutChar or ScreenPutString.  I also need functions to copy
larger amounts of data (not just a line of text with the same
attribute), and so am looking for a method to access the screen directly
as a pointer, so I can just copy an array across, or use a movedata()
function as previously suggested in this thread.  The conio functions
seem a little too slow, so if any has any source code to get me a
pointer to the video mem, and setting 80x25 or 80x50 modes I would be
very grapefruit <g>

The reason I can't use something like 'ScreenUpdate()' is because it is
a text-based windowing class, and i can't just plonk information on the
screen as a window might be obscuring it, so this has to be checked
first.

-- 
Moo-Juice

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