Re: form_driver and wide-char

[Thomas Dickey]

On Wed, 6 Dec 2006, Brian Tan wrote:

> Thomas Dickey wrote:
> > Reading your email more closely, I'm not sure whether you are reporting
> > a problem with set_field_buffer() or with form_driver() - or both.
> I am working on "internationalising" an existing 4GL compiler, and got stuck 
> with form_driver for input. As form_driver not accepting non-Ascii, I was 
> thinking of a bypass; using form_driver for Ascii and accessing field buffer 
> directly for widechar.

ok.
> I guess I am reporting problem with
>
> 1. field_buffer(); it does not return mbs correctly. For example, wchar 
> 0x597d -> mbs e5a5bd written with set_field_buffer(), screen form updates and 
> shows “好 " (with trailing space due to strlen=3, I think) but 
> field_buffer() returns c3a5c2a5c2bd, making further wchar entry not possible, 
> unless I keep track of field buffer independently.

This is probably the best place to focus on right now.
The two (I think) are independent

> 2. form_driver; for not accepting wchar or mbs :)

It's supposed to do the latter - but it's likely that you're better able 
to see problems.  I tested it by select/paste from the UTF-8 scripts in
the dialog package, combined with editing from the keyboard.  At the same
time, my test program would set/get from the field buffer, so I could see 
mismatches.

So - going back to testing this area, along with some sample data (and 
locale information from you) would help to reproduce the problem and focus 
on what's going wrong.

thanks

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