Re: filter() prevents clearing of screen, but still clears current line

[Thomas Dickey]

On Fri, 16 Mar 2007, Christer Enfors wrote:

> Thomas Dickey wrote:
> > On Fri, 16 Mar 2007, Christer Enfors wrote:
> > > I've got another problem with my instring program. Using filter() I've 
> > > managed to avoid clearing the entire screen. But ncurses still clears the 
> > > current line. I want to prevent ncurses from doing that. Does that mean 
> > > that I'll have to change the ncurses source? I could probably figure out 
> > > how to do that, but if there's an easier way...
> >
> > I assume you mean that you don't want it to clear after the end of
> > your window on the current line.  Again, you can fool it:
>
> Actually, I'm not explicitly opening a window (should I?), I just call

initscr and newterm make a standard window (stdscr).

> newterm(). And come to think of it, I don't know if the code clears the line 
> *after* my form field; what I did notice was that it erased my "label" in 
> *front* of the field. Therefore, I assumed it was clearing the entire line.
>
> >     a) make ncurses think that the screen does not extend past your
> >        window's right margin, and
> >     b) remove the "el" capability (so it will be forced to use blanks
> >        to fill the line).
> >
> > See use_env() for the first part.
>
> Given the above, should I still do what you say here?

yes - I think that's the way to go (if you want to retain text on the
right-side of your prompt).   I'd normally assume a one-line screen for
filter() uses the whole line.

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