Re: Ncurses : scrollback functionality

[Thomas Dickey]

On Thu, 22 Jul 2010, azzareld wrote:

> I have not a greate experience in developing under Linux. I'm developing an
> application wich writes by ncurses a menu on a terminal giving to an user
> the possibility to make a choiche. I enabled the scrolling and effectivly
> when the printing (made by printw) reaches the end of the window
> automatically it scrolls. Then I tried to see the part of text not more
> visible on the window executing a scroll manually by scrl (-1) but I see
> only white rows as if there weren't a scrollback functionality. is it a my
> error or it isn't supported. Any suggest for me? Please it is important for
> me and any help will be very aprecied. I thank you in advantage.

There are basically two approaches:

a) make the application store the data which is scrolled out of sight,
   and restore it when scrolling into view, or

b) store the data in a "pad", which is like a window, that can be much
   larger than the terminal.  Manage that by changing the viewport.

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