Re: DOS Command in OA

Re: DOS Command in OA

[David C. Hoos, Sr.]

KdoMFueSys Wilhelmshaven <mfuesys.admin@nwn.de> wrote in message
news:37A80902.1454720B@nwn.de...
> Hallo,
> we've implemented a screen_io package in order to ease basic in- and
> output based upon ESC-Seqeunces using ANSI.SYS as it was described
> formerly in this group.
> What we are trying now, is to change the screen's text-resolution from
> 80x25 to 80x50, e.g. with dos command
> mode co80 50.
> What we are trying is to invoke this call from within our ada-code.
>
> Our question is:
> Is there any possible solution, to invoke DOS-Commands from within
> Object-Ada-Code?
> And if not, is there any possibility to change screen's text-resolution
> from 80x25 to 80x25?
>
> We are using WIN95 and Aonix Object Ada 7.1.

At the end of this message is the source code for a library-level procedure
that will execute a shell command from within an Ada program.
------------------
with Interfaces.C;
function Execute_Shell_Command (The_Command_String : String)
      return Interfaces.C.Int is
   package C renames Interfaces.C;
   function System (S : C.Char_Array) return C.Int;
   pragma Import (C, System, "system");
begin
   return System (C.To_C (The_Command_String));
end Execute_Shell_Command;

Re: DOS Command in OA

[Gautier]

IIRC, there are EXEC & EXEC_COMMAND in a DOS package in Alsys;
maybe it's the same with OA.

-- 
Gautier

--------
http://members.xoom.com/gdemont/

Re: DOS Command in OA

[Ted Dennison]

In article <37A80902.1454720B@nwn.de>,
  KdoMFueSys Wilhelmshaven <mfuesys.admin@nwn.de> wrote:
> we've implemented a screen_io package in order to ease basic in- and
> output based upon ESC-Seqeunces using ANSI.SYS as it was described
> formerly in this group.

You do of course realize that this will not work in WindowsNT? (without
a lot of extra work, anyway).

> What we are trying now, is to change the screen's text-resolution from
> 80x25 to 80x50, e.g. with dos command
> mode co80 50.
> What we are trying is to invoke this call from within our ada-code.

It might be easier to just change the properties on the DOS window you
use to start your program.

--
T.E.D.


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Re: DOS Command in OA

[Ed Falis]

Take a look in the subdirectory <oa_installation>\lib\ada83 

The old Alsys DOS packages are there, ported to windows, with some restrictions.  Create a library, compile them, and link to it from your 
application library, or just compile them into the application library.  They MAY have what you're looking for.  They certainly have the 
"exec" commands that were mentioned, but NT could get in the way of whay you're trying to do.

- Ed

Re: DOS Command in OA

[David C. Hoos, Sr.]

Ted Dennison wrote in message <7o9h0a$d68$1@nnrp1.deja.com>...
>In article <37A80902.1454720B@nwn.de>,
>  KdoMFueSys Wilhelmshaven <mfuesys.admin@nwn.de> wrote:
>> we've implemented a screen_io package in order to ease basic in- and
>> output based upon ESC-Seqeunces using ANSI.SYS as it was described
>> formerly in this group.
>
>You do of course realize that this will not work in WindowsNT? (without
>a lot of extra work, anyway).

Note what the poser of the question said, viz.:

We are using WIN95 and Aonix Object Ada 7.1.


ANSI.SYS is alive and well in WIN95, and changing the console mode
from within the program works just fine.

Re: DOS Command in OA

[David C. Hoos, Sr.]

Ed Falis wrote in message <1103_933772501@DZOG-CHEN>...
>Take a look in the subdirectory <oa_installation>\lib\ada83
>
>The old Alsys DOS packages are there, ported to windows, with some
restrictions.  Create a library, compile them, and link to it from your
>application library, or just compile them into the application library.
They MAY have what you're looking for.  They certainly have the
>"exec" commands that were mentioned, but NT could get in the way of whay
you're trying to do.
>

Note what the poser of the question said, viz.:

We are using WIN95 and Aonix Object Ada 7.1.


ANSI.SYS is alive and well in WIN95, and changing the console mode
from within the program works just fine.

DOS Command in OA

[KdoMFueSys Wilhelmshaven]

Hallo,
we've implemented a screen_io package in order to ease basic in- and
output based upon ESC-Seqeunces using ANSI.SYS as it was described
formerly in this group.
What we are trying now, is to change the screen's text-resolution from
80x25 to 80x50, e.g. with dos command
mode co80 50.
What we are trying is to invoke this call from within our ada-code.

Our question is:
Is there any possible solution, to invoke DOS-Commands from within
Object-Ada-Code?
And if not, is there any possibility to change screen's text-resolution
from 80x25 to 80x25?

We are using WIN95 and Aonix Object Ada 7.1.

We appreciate any help, thanks in advance.

Carsten Schnedler
PiCasi@T-Online.de

Re: DOS Command in OA

[David C. Hoos, Sr.]

Ted Dennison wrote in message <7oc4do$9ml$1@nnrp1.deja.com>...
>In article <7o9kr7$nca@hobbes.crc.com>,
>  "David C. Hoos, Sr." <david.c.hoos.sr@ada95.com> wrote:
>>
>> Note what the poser of the question said, viz.:
>>
>> We are using WIN95 and Aonix Object Ada 7.1.
>
>Just because they are developing using Win95 doesn't mean that they will
>never want it to run under NT. As someone who runs NT on his home rig,
>I'm a little sensitive to this issue. The vast majority of programs
>(even games, which tend to be highly-tuned to their environment) run
>just fine on Win95, Win98, and WinNT. That creates a certian expectation
>among Windows users that properly-written programs should run on both.
>Anyone using an option that will tie it to one of those choices only,
>should be aware of that fact, and very certian that this is ok with
>their users.
>
Well... as a matter of fact, resizing the window with a mode command
issued from within the program works on NT, as well as 95/98.

What doesn't exist (to my knowledge, at least) is an implementation of
ANSI.SYS for NT.

Re: DOS Command in OA

[Ted Dennison]

In article <7o9kr7$nca@hobbes.crc.com>,
  "David C. Hoos, Sr." <david.c.hoos.sr@ada95.com> wrote:
>
> Note what the poser of the question said, viz.:
>
> We are using WIN95 and Aonix Object Ada 7.1.

Just because they are developing using Win95 doesn't mean that they will
never want it to run under NT. As someone who runs NT on his home rig,
I'm a little sensitive to this issue. The vast majority of programs
(even games, which tend to be highly-tuned to their environment) run
just fine on Win95, Win98, and WinNT. That creates a certian expectation
among Windows users that properly-written programs should run on both.
Anyone using an option that will tie it to one of those choices only,
should be aware of that fact, and very certian that this is ok with
their users.

--
T.E.D.


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Re: DOS Command in OA

[czgrr]

In article <KcVp3.404$9f1.41774@typ12.nn.bcandid.com>,
  "David C. Hoos, Sr." <david.c.hoos.sr@ada95.com> wrote:
> [We are using WIN95 and Aonix Object Ada 7.1.]
> ------------------
> with Interfaces.C;
> function Execute_Shell_Command (The_Command_String : String)
>       return Interfaces.C.Int is
>    package C renames Interfaces.C;
>    function System (S : C.Char_Array) return C.Int;
>    pragma Import (C, System, "system");
> begin
>    return System (C.To_C (The_Command_String));
> end Execute_Shell_Command;

And what linker option or path do I need to add in order to get this to
build without a "LNK2001: unresolved external symbol _system" error?

Cheers,
czgrr
--
Email address blocked - reply to the newsgroup.
Assume Ada83 and (V)C++ unless said otherwise.
My opinions are independent from my employer's.
Use any suggestions at your own risk.


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Re: DOS Command in OA

[KdoMFueSys Wilhelmshaven]

>
>
> Just because they are developing using Win95 doesn't mean that they will
> never want it to run under NT. As someone who runs NT on his home rig,
> I'm a little sensitive to this issue. The vast majority of programs
> (even games, which tend to be highly-tuned to their environment) run
> just fine on Win95, Win98, and WinNT. That creates a certian expectation
> among Windows users that properly-written programs should run on both.
> Anyone using an option that will tie it to one of those choices only,
> should be aware of that fact, and very certian that this is ok with
> their users.

That's true, but it isn't planned to migrate from WIN95 to NT. We only were
interested in how to do it, cause we thought, that ist is a bit
uncomfortable for us, to change window's resolution by hand. The migration
isn't planned because we are programming only for teaching aspects.
We are trying to teach a good Ada - programming-style for beginners.
Therefore our focus isn't to much on how to handle migrations etc. but
teaching the various aspects of programming with Ada. We have a lot to do
with it, therefore the screen io has only been implemented to watch results
more easily.

Carsten Schnedler