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Re: Leaving display visible when exiting ncurses application

From: Thomas Dickey
Subject: Re: Leaving display visible when exiting ncurses application
Date: Mon, 11 Jan 2010 18:17:04 -0500 (EST)

On Tue, 12 Jan 2010, Allistar wrote:

Hi all,
 I have developed a brute-force puzzle breaking application for a board
puzzle (called Kaleidoscope). This can take many hundreds of thousands of
iterations, and the output of the current "solution" is displayed using
ncurses (the board is output at a particular location on the screen, so the
user sees it animating as the algorithm progresses).

 The problem is that when the application finishes, the screen is cleared
and I am left back at the terminal prompt. I would like it so the contents
from the ncurses window are displayed to the normal console when the
application exits. Is there a way to do this?

That sounds like you want to override the switching between xterm's
normal/alternate screens.

dialog does this - relies on knowing how ncurses works, i.e., that the data declared in term.h _is_ the same as used by the curses library, so it's not portable to other implementations. Look at init_dialog() in util.c


Also I would like this to happen if the application is killed ungracefully

Given the above workaround, this would work reasonably well also...

Thomas E. Dickey

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