Re: wide characters, get_wch() and form_driver() - cannot get them working together.

[Thomas Dickey]

On Thu, 19 Jun 2008, Adam Spragg wrote:

> Hiya.
>
> On Thursday 19 June 2008 00:37:58 Thomas Dickey wrote:
> > Using ncurses's trace, I can see that the form_driver is seeing the
> > parameter passed to it as sign-extended.  That's happening in this
> > line:
> >
> >                      if ((i = form_driver(form, buf[j])) != E_OK) {
> >
> > since 'buf' is a (by default on some platforms) signed char.
> > A quick check with that changed to unsigned char seems to work.
>
> Ah - that fixes it for me too. Thanks!
>
> I can't see anything about needing to cast the "i" parameter of
> form_driver() to "unsigned char" in any of the guides, the FAQ, the

The prototype for form_driver() says it expects an int.

That's because it would normally hold values from 0 on up (and possibly
a -1 for illegal keycode).  So it's not expecting a -63 (a sign-extended
character).  Passing an unsigned char works though.

--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net