Re: multi-line field issues

[tjareson]

The hint to the examples brought me to the solution, thanks for that!

As I'm programming with codeblocks somehow other versions of the ncurses 
library (from /lib) were linked, which always caused different results 
compared with the test applications.

What was confusing that libraries can be found at different locations in 
the system. I found versions in /lib  /usr/lib and of course in  
/ncurses-5.9/lib.  Somehow codeblocks always seems to look first in 
/lib. And there is only libncurses.so.5.7. and libncursesw.so.5.7 (but 
no libform*)

So my impression is, that codeblocks linked ncurses 5.7 from lib but the 
libform with a more current version 5.9. Which somehow ended in this 
weird results that multiline was fixed, but Umlauts not working anymore, 
what made me assume that all ncurses related libs are the most current 
version...

So I set in codeblocks now to link libncursesw.a etc. directly. Not sure 
if this is the most efficient way to do, as the application binary of 
course gets bigger then. But at least now everything works.

A nightshift with some insights... :-)

Tjareson

Am 30.08.2012 22:43, schrieb Thomas Dickey:
> On Thu, Aug 30, 2012 at 09:20:04PM -0300, tjareson wrote:
> > Unfortunately things were not as easy as I first thought:
> >
> > Since I upgraded from ncurses 5.7 to 5.9 the multi line field issue
> > is solved, but all off a sudden German Umlaut (äöü etc.) are not
> > working anymore when using form_driver, which worked before with
> > exactly the same source code.
> > Of course, locale settings didn't change. Also setlocale-settings
> > command in the source is not change (de_DE.UTF-8 as before).
> >
> > Now everytime I press an Umlaut key I get 3-4 "weird" chars instead
> > of that one sign displayed.
> > ncursesw / formw etc. is linked like it was before. Also the make
> > was done with wide-character support. Nothing changed accept the
> > version.
> >
> > Was there any major change regarding utf8 / locale support since
> > 5.7? Honestly I'm a little bit lost.
> There were various bug-fixes - see
>         http://invisible-island.net/ncurses/announce-5.9.html
>         http://invisible-island.net/ncurses/announce-5.8.html
>
> For instance I see a fix in 5.8 for field_buffer which might be the
> one you're referring to.
>
> > The funny thing is: data I read from the database get displayed
> > properly in forms, only entering umlauts with the keyboard is not
> > working anymore.
> Testing by pasting various characters into ncurses' demo_forms,
> I'm not seeing the problem.
>   
> > What might be worth to mention: I'm using wgetch() to get keyboard
> > inputs. (as before) If I'm using wget_wch() instead, I only get an
> > empty character shown by form_driver.
> It's not generally part of a package, but ncurses has a trace feature
> which can be compiled-in.  Using the trace is where I'd start for
> analyzing some odd problem.
>   
> > Am 30.08.2012 18:00, schrieb tjareson:
> > > Am 30.08.2012 07:13, schrieb Thomas Dickey:
> > > > On Wed, Aug 29, 2012 at 09:34:01PM +0000, Tjareson wrote:
> > > > > Sentinel <sentinel.2001 <at> gmx.com> writes:
> > > > >
> > > > > [...]
> > > > > > I have been studying some apps that
> > > > > > use
> > > > > > ncurses and found that none of them use multiline. Most just
> > > > > > invoke vim or
> > > > > > write their own.
> > > > > >
> > > > > > Thus, at the time of set_field_buffer and field_buffer if data
> > > > > > transformation can be done so a file can be read and set in, and then
> > > > > > saved out, and it remains as is, it would be great.
> > > > > I'm currently implementing an application using ncurses and
> > > > > also tried to use a
> > > > > multiline field to edit longer texts.
> > > > >
> > > > > Is there any solution to that issue? I have the problem that I
> > > > > can edit properly
> > > > > in a multiline field, I even can load a TEXT-field from MYSQL
> > > > > into it and it
> > > > > gets displayed properly (also with new lines etc.)
> > > > >
> > > > > But I was never able to get more back from a multiline field
> > > > > that the first row.
> > > > >
> > > > > Someone wrote there is an application-wise workaround for
> > > > > that. Any ideas what
> > > > >   to do solve that issue?
> > > > The example "demo_forms" seems to work - I'm not sure what issue you're
> > > > reporting.  (A short sample program might help).
> > > Thanks a lot for quick reply. I'm sorry but I had to find out that
> > > this Ubuntu here was running with an ncurses version 5.7 for
> > > whatever reason. After updating everything, all is working fine.
> > > (Could have checked that before...)
> > > And: ncurses is great. Programming text interfaces is so much
> > > easier with it. :-) Thanks for maintaining all this.
> > >
> > > Tjareson