From: Paul Duncan <pabs@...>
Date: 2004-08-24T22:33:24+09:00
Subject: Re: Threads + Ncurses

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* Tobias Peters (tpeters@invalid.uni-oldenburg.de) wrote:
> Julius Plenz wrote:
[snipped]
> >I just want to run the thread continuously until one key is pressed...
> >What other possibilities do I have?
>=20
> Ncurses.getch blocks not only other ncurses-functions. It blocks the=20
> complete ruby interpreter, all threads.
>=20
> This has to change, obviously, and it will change before the 1.0 release=
=20
> of ncurses-ruby. In the meantime, you can work around the limitation in=
=20
> the way Lennon suggested [ruby-talk:109697].

Raggle uses this approach, and it does have at least one caveat:
terminal resize events (and possibly mouse events as well, although I
believe those are still broken in Ncurses-Ruby) are not handled
properly. =20

That said, here's the code from Raggle:

  timeout =3D $config['input_select_timeout'] # defaults to 0.2
  $done =3D false
  until $done
    # handle keyboard input
    r =3D select [$stdin], nil, nil, timeout
    if r && r.size > 0
      c =3D Ncurses::getch
      $config['keys'][c].call($wins[$a_win],c) \
        if $config['keys'].has_key? c
    end
   =20
    # snipped irrelevant stuff
  end

[snipped]
> regards,
>   Tobias

--=20
Paul Duncan <pabs@pablotron.org>        pabs in #ruby-lang (OPN IRC)
http://www.pablotron.org/               OpenPGP Key ID: 0x82C29562

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