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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"><!-- **************************************************************************** * Copyright (c) 1998-2003,2005 Free Software Foundation, Inc. * * * * Permission is hereby granted, free of charge, to any person obtaining a * * copy of this software and associated documentation files (the * * "Software"), to deal in the Software without restriction, including * * without limitation the rights to use, copy, modify, merge, publish, * * distribute, distribute with modifications, sublicense, and/or sell * * copies of the Software, and to permit persons to whom the Software is * * furnished to do so, subject to the following conditions: * * * * The above copyright notice and this permission notice shall be included * * in all copies or substantial portions of the Software. * * * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * * * Except as contained in this notice, the name(s) of the above copyright * * holders shall not be used in advertising or otherwise to promote the * * sale, use or other dealings in this Software without prior written * * authorization. * **************************************************************************** * @Id: curs_scr_dump.3x,v 1.5 2005/05/15 16:18:55 tom Exp @--><HTML><HEAD><TITLE>curs_scr_dump 3x</TITLE><link rev=made href="mailto:bug-ncurses@gnu.org"><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"></HEAD><BODY><H1>curs_scr_dump 3x</H1><HR><PRE><!-- Manpage converted by man2html 3.0.1 --><STRONG><A HREF="curs_scr_dump.3x.html">curs_scr_dump(3x)</A></STRONG> <STRONG><A HREF="curs_scr_dump.3x.html">curs_scr_dump(3x)</A></STRONG></PRE><H2>NAME</H2><PRE> <STRONG>scr_dump</STRONG>, <STRONG>scr_restore</STRONG>, <STRONG>scr_init</STRONG>, <STRONG>scr_set</STRONG> - read (write) a <STRONG>curses</STRONG> screen from (to) a file</PRE><H2>SYNOPSIS</H2><PRE> <STRONG>#include</STRONG> <STRONG><curses.h></STRONG> <STRONG>int</STRONG> <STRONG>scr_dump(const</STRONG> <STRONG>char</STRONG> <STRONG>*filename);</STRONG> <STRONG>int</STRONG> <STRONG>scr_restore(const</STRONG> <STRONG>char</STRONG> <STRONG>*filename);</STRONG> <STRONG>int</STRONG> <STRONG>scr_init(const</STRONG> <STRONG>char</STRONG> <STRONG>*filename);</STRONG> <STRONG>int</STRONG> <STRONG>scr_set(const</STRONG> <STRONG>char</STRONG> <STRONG>*filename);</STRONG></PRE><H2>DESCRIPTION</H2><PRE> The <STRONG>scr_dump</STRONG> routine dumps the current contents of the virtual screen to the file <EM>filename</EM>. The <STRONG>scr_restore</STRONG> routine sets the virtual screen to the contents of <EM>filename</EM>, which must have been written using <STRONG>scr_dump</STRONG>. The next call to <STRONG>doupdate</STRONG> restores the screen to the way it looked in the dump file. The <STRONG>scr_init</STRONG> routine reads in the contents of <EM>filename</EM> and uses them to initialize the <STRONG>curses</STRONG> data structures about what the terminal currently has on its screen. If the da- ta is determined to be valid, <STRONG>curses</STRONG> bases its next update of the screen on this information rather than clearing the screen and starting from scratch. <STRONG>scr_init</STRONG> is used after <STRONG>initscr</STRONG> or a <STRONG>system</STRONG> call to share the screen with another process which has done a <STRONG>scr_dump</STRONG> after its <STRONG>endwin</STRONG> call. The data is declared invalid if the terminfo capabilities <STRONG>rmcup</STRONG> and <STRONG>nrrmc</STRONG> exist; also if the terminal has been writ- ten to since the preceding <STRONG>scr_dump</STRONG> call. The <STRONG>scr_set</STRONG> routine is a combination of <STRONG>scr_restore</STRONG> and <STRONG>scr_init</STRONG>. It tells the program that the information in <EM>filename</EM> is what is currently on the screen, and also what the program wants on the screen. This can be thought of as a screen inheritance function. To read (write) a window from (to) a file, use the <STRONG>getwin</STRONG> and <STRONG>putwin</STRONG> routines [see <STRONG><A HREF="curs_util.3x.html">curs_util(3x)</A></STRONG>].</PRE><H2>RETURN VALUE</H2><PRE> All routines return the integer <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> upon success. X/Open defines no error conditions. In this implementa- tion, each will return an error if the file cannot be opened.</PRE><H2>NOTES</H2><PRE> Note that <STRONG>scr_init</STRONG>, <STRONG>scr_set</STRONG>, and <STRONG>scr_restore</STRONG> may be macros.</PRE><H2>PORTABILITY</H2><PRE> The XSI Curses standard, Issue 4, describes these func- tions (adding the const qualifiers). The SVr4 docs merely say under <STRONG>scr_init</STRONG> that the dump data is also considered invalid "if the time-stamp of the tty is old" but do not define "old".</PRE><H2>SEE ALSO</H2><PRE> <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>, <STRONG><A HREF="curs_util.3x.html">curs_util(3x)</A></STRONG>, <STRONG><A HREF="system.3S.html">system(3S)</A></STRONG> <STRONG><A HREF="curs_scr_dump.3x.html">curs_scr_dump(3x)</A></STRONG></PRE><HR><ADDRESS>Man(1) output converted with<a href="http://www.oac.uci.edu/indiv/ehood/man2html.html">man2html</a></ADDRESS></BODY></HTML>⌨️ 快捷键说明
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