Handling interrupts

Handling interrupts

[Jean-David Tr�panier]

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Hi! I would like to discover how to use interrupts handlers on Ada95 so I
was wondering if someone has an example that show how to attach a handler to
the keyboard. Example: when you press on a key, the system write a message:
"key pressed".


Thanks a lot,

Jean-David Tr�panier
(JDT@hy.cgocable.ca)

Re: Handling interrupts

[David C. Hoos, Sr.]

----- Original Message -----
From: "Jean-David Tr�panier" <JDT@hy.cgocable.ca>
Newsgroups: comp.lang.ada
To: <comp.lang.ada@ada.eu.org>
Sent: November 23, 2001 3:14 PM
Subject: Handling interrupts


> Hi! I would like to discover how to use interrupts handlers on Ada95 so I
> was wondering if someone has an example that show how to attach a handler to
> the keyboard. Example: when you press on a key, the system write a message:
> "key pressed"
If that which interests you is just the keyboard, then you don't need an
interrupt
handler.  You should look at Ada.Text_IO.Get_Immediate which can wither
be called so as to not return until a key has been pressed, or to return
immediately with a Boolean object set to indicate whether a new character
is available.

If you're looking for keyboard scan codes -- e.g. to get non-character inputs
such as funcion keys or the change of state of the Shift, Alt, or Ctl keys,
then you have an OS-dependent problem.
 .
<snip>

Re: Handling interrupts

[chris.danx]

"Jean-David Tr�panier" <JDT@hy.cgocable.ca> wrote in message
news:F1zL7.5993$qw1.1034012@weber.videotron.net...
> Hi! I would like to discover how to use interrupts handlers on Ada95 so I
> was wondering if someone has an example that show how to attach a handler
to
> the keyboard. Example: when you press on a key, the system write a
message:
> "key pressed".

Can you get hold of a copy of Cohens book (from a library or something, it's
really expensive to buy)?  If so Section 19.6 is all about handlers, and was
quite good if memory serves.

HTH,
Chris

> Thanks a lot,
>
> Jean-David Tr�panier
> (JDT@hy.cgocable.ca)
>
>