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From: v1b@mhuxi.UUCP (davis)
Newsgroups: net.lang.pascal,net.micro.pc
Subject: Re: Reposting of: Turbo Pascal Questions
Message-ID: <445@mhuxi.UUCP>
Date: Mon, 9-Jun-86 08:33:05 EDT
Article-I.D.: mhuxi.445
Posted: Mon Jun  9 08:33:05 1986
Date-Received: Thu, 12-Jun-86 02:22:39 EDT
References: <384@usc-oberon.UUCP>
Organization: AT&T Bell Laboratories, Murray Hill
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Xref: watmath net.lang.pascal:567 net.micro.pc:8601

> 
> 
> I posted a message similar to the following about a week ago. Since I
> have received no responses, I'm assuming that it didn't get out of our machine.
> Sorry if you've already seen it.
> 
> Is it possible to save a graphics screen (graphmode) into an array (and from
> there into a file for later use)? I can do this with the text screen, but get 
> gibberish when I try the same technique with graphmode.
> 
> How do I turn the cursor off from my program? Disable it? Set cursor color to
> background color? Better yet, how about a cursor-on/cursor-off pair?
> 
> I have version 2.0, and have heard that version 3.0 has something called
> variable-constants. I would love to be able to use the results of MemAvail
> to determine the value to give a constant, i.e. the more available memory, 
> the more records I can bring in at once, which means fewer disk accesses
> and a faster program. Is 3.0 worth the my going out and getting it?
> 
> Is there some way to read the color of a pixel? Turbo Graphics has no fill
> routine which I think was a little short sighted of Borland. I have a fill
> routine which I wrote in Microsoft Pascal for the EGA, but I have to know
> how to get the pixel color.
> 
> Thanx in advance,
> -- 
> 	Michael J. Hartsough
> 	hartsoug@oberon.UUCP
> 
> It is to the interest of the commonwealth of mankind that there should
> be someone who is unconquered, someone against whom fortune has no power.
> 			---- Seneca
> That's why I'm here.


Michael,

I was unable to mail to you directly so i hope the following is helpful:

            Vern Bradner

From vxb Sun Jun  8 18:03 EDT 1986
To: oberon!hartsoug vxb
Subject: reply to your turbo pascal question
Status: RO

A fellow who works for me gave me the following information
about your turbo pascal problem. He is going out of town
for a while, but if you have any more questions, I will
give them to him when he returns.

                Vern Bradner
                ihnp4!mhuxi!v1b

*********************************************
Annotation by Byrne, Dick P.:

Since  I'm a novice with this language, I can
only suggest solutions to  2  of  this  guy's
questions:

   1).  To turn the curson on/off, the guy
        should use some "In-Line" assembler
        code to make a call to the BIOS
        video routines.  I'll need my
        reference books to give you the
        specifics, so see me when I get back
        from Michigan.

   2).  Saving a graphics screen for future
        use should be exactly the same as
        saving a text screen except that
        you should save a full 16Kb (or
        32Kb for high res. stuff) rather
        than the 4Kb needed for a text mode
        screen image.


                                       RPB