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C++ ios wrappers fpr ncurses

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  C++ ios wrappers fpr ncurses Ruben Safir <ruben@mrbrklyn.com> - 2011-06-26 21:43 +0000
    Re: C++ ios wrappers fpr ncurses Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-06-27 19:48 +0000
    Re: C++ ios wrappers fpr ncurses Michael DOUBEZ <michael.doubez@free.fr> - 2011-06-30 01:59 -0700

#7177 — C++ ios wrappers fpr ncurses

The ncurses library has C based printing functions that look similar to 
this

mvprintw(24, 0, "Charcter pressed is = %3d Hopefully it can be printed as 
'%c'", c, c);


and I have a quiz, flashcard program that handles i/o to files with 
basic_iostreams in the classes that look like this

class myclass (ostream os = cout).

I figured I'd be able to hook in different streams for later 
development.  But now I'm not sure how to go about it.  Any tips or ideas?

I have to create another stream class of somekind 

Ruben

Ruben 

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#7188

On Sun, 2011-06-26, Ruben Safir wrote:
> The ncurses library has C based printing functions that look similar to 
> this
>
> mvprintw(24, 0, "Charcter pressed is = %3d Hopefully it can be printed as 
> '%c'", c, c);
>
>
> and I have a quiz, flashcard program that handles i/o to files with 
> basic_iostreams in the classes that look like this
>
> class myclass (ostream os = cout).
>
> I figured I'd be able to hook in different streams for later 
> development.  But now I'm not sure how to go about it.  Any tips or ideas?
>
> I have to create another stream class of somekind 

Not really. (a) You don't have to use iostreams and (b) even if you do
(and provide ostream << C for all your classes) you can output to an
ostrstream and feed /that/ one to curses.

/Jorgen

-- 
  // Jorgen Grahn <grahn@  Oo  o.   .  .
\X/     snipabacken.se>   O  o   .

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#7272

On Jun 26, 11:43 pm, Ruben Safir <ru...@mrbrklyn.com> wrote:
> The ncurses library has C based printing functions that look similar to
> this
>
> mvprintw(24, 0, "Charcter pressed is = %3d Hopefully it can be printed as
> '%c'", c, c);
>
> and I have a quiz, flashcard program that handles i/o to files with
> basic_iostreams in the classes that look like this
>
> class myclass (ostream os = cout).
>
> I figured I'd be able to hook in different streams for later
> development.  But now I'm not sure how to go about it.  Any tips or ideas?
>
> I have to create another stream class of somekind

Well, you could create a steambuf outputing with ncurses's addch() and
even create modifier for the flags but I don't know if it is worth the
effort. Except for learning purpose, streams and manipulators are a
rather dark part of the STL.

I have had the occasion of implementing simple custom streams and
manipulators for my work, it is a quite rewarding experience. If you
want to explore it, you can try "Standard C++ IOStreams and Locales".
I have not (yet) read it but, as I understand it, it is a kind of
reference on the subject. Otherwise, I found the pstream project on
sourceforge a good model and other articles details specific
techniques; in particular the following for manipulators:
http://accu.org/index.php/journals/350

--
Michael

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