Re: readline-like program

[Rick Engebretson]

> ----------------------------------------------------------------------
>
> Message: 1
>
>
> I'm not sure if this is the appropriate forum, if it isn't then I
> would really appreciate any links you think might be useful.  I've
> been attempting to write a program that would have a readline-like
> interface.  After reading through the manpages it appears that I
> should be doing something like:
>
>   initscr();
>   cbreak();
>   noecho();
>   keypad(stdscr,TRUE);
>   for (;;) {
>     int a = getch();
>     /* do something */
>   }
>
> This sets the WINDOW size to the physical screen size, which is not
> what I want.  I want the rest of the terminal to be unaffected with
> just a single terminal-input line at the end.  I tried (and tried..)
> various combinations of setupterm and newwin, but I couldn't quite
> get it to work.  Is there a "curses" way to do this or am I stuck
> using termcap?
>
> Many Thanks,
>   Jim Strother
>
>
>
>
>
> ------------------------------
>
> Message: 2
>
> Generally curses deals with full-screen stuff (in part because some
> terminals used to behave radically different in full-screen vs
> command-line).  It does implement a function "filter()", which tells
> ncurses to limit itself to a single line.  There's an example in the
> ncurses sources (test/filter.c) which demonstrates this.
>
> -- 
> Thomas E. Dickey
>
>
>
> ------------------------------
>
> Message: 3
>
> Here's an article that places a menu on its own window, which I believe is
> pretty much what you want. The entire document (not just the one article)
> might give you some other tips.
>
>
http://www.troubleshooters.com/lpm/200405/200405.htm#_Putting_the_Menu_in_its_Own_Window
>
> HTH
>
> SteveT
> Steve Litt

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Another approach to limiting ncurses screen size is to use the stty system
command. On a high resolution linux framebuffer console, "stty cols N" and
"stty rows M" tells the kernel driver that the console has only N x M
character area. Ncurses will fill only this area, leaving the rest of the
framebuffer screen free for other things. Probably not what you're looking
for, but somewhat related.
Rick.