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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"><!-- **************************************************************************** * Copyright (c) 1998,2000 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_touch.3x,v 1.8 2000/07/08 11:07:57 tom Exp @--><HTML><HEAD><TITLE>curs_touch 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_touch 3x</H1><HR><PRE><!-- Manpage converted by man2html 3.0.1 --><STRONG><A HREF="curs_touch.3x.html">curs_touch(3x)</A></STRONG> <STRONG><A HREF="curs_touch.3x.html">curs_touch(3x)</A></STRONG></PRE><H2>NAME</H2><PRE> <STRONG>touchwin</STRONG>, <STRONG>touchline</STRONG>, <STRONG>untouchwin</STRONG>, <STRONG>wtouchln</STRONG>, <STRONG>is_linetouched</STRONG>, <STRONG>is_wintouched</STRONG> - <STRONG>curses</STRONG> refresh control routines</PRE><H2>SYNOPSIS</H2><PRE> <STRONG>#include</STRONG> <STRONG><curses.h></STRONG> <STRONG>int</STRONG> <STRONG>touchwin(WINDOW</STRONG> <STRONG>*win);</STRONG> <STRONG>int</STRONG> <STRONG>touchline(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>start,</STRONG> <STRONG>int</STRONG> <STRONG>count);</STRONG> <STRONG>int</STRONG> <STRONG>untouchwin(WINDOW</STRONG> <STRONG>*win);</STRONG> <STRONG>int</STRONG> <STRONG>wtouchln(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>n,</STRONG> <STRONG>int</STRONG> <STRONG>changed);</STRONG> <STRONG>bool</STRONG> <STRONG>is_linetouched(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>line);</STRONG> <STRONG>bool</STRONG> <STRONG>is_wintouched(WINDOW</STRONG> <STRONG>*win);</STRONG></PRE><H2>DESCRIPTION</H2><PRE> The <STRONG>touchwin</STRONG> and <STRONG>touchline</STRONG> routines throw away all opti- mization information about which parts of the window have been touched, by pretending that the entire window has been drawn on. This is sometimes necessary when using overlapping windows, since a change to one window affects the other window, but the records of which lines have been changed in the other window do not reflect the change. The routine <STRONG>touchline</STRONG> only pretends that <EM>count</EM> lines have been changed, beginning with line <EM>start</EM>. The <STRONG>untouchwin</STRONG> routine marks all lines in the window as unchanged since the last call to <STRONG>wrefresh</STRONG>. The <STRONG>wtouchln</STRONG> routine makes <EM>n</EM> lines in the window, starting at line <EM>y</EM>, look as if they have (<EM>changed</EM><STRONG>=1</STRONG>) or have not (<EM>changed</EM><STRONG>=0</STRONG>) been changed since the last call to <STRONG>wrefresh</STRONG>. The <STRONG>is_linetouched</STRONG> and <STRONG>is_wintouched</STRONG> routines return <STRONG>TRUE</STRONG> if the specified line/window was modified since the last call to <STRONG>wrefresh</STRONG>; otherwise they return <STRONG>FALSE</STRONG>. In addi- tion, <STRONG>is_linetouched</STRONG> returns <STRONG>ERR</STRONG> if <EM>line</EM> is not valid for the given window.</PRE><H2>RETURN VALUE</H2><PRE> All routines return the integer <STRONG>ERR</STRONG> upon failure and an integer value other than <STRONG>ERR</STRONG> upon successful completion, unless otherwise noted in the preceding routine descrip- tions.</PRE><H2>PORTABILITY</H2><PRE> The XSI Curses standard, Issue 4 describes these func- tions. Some historic curses implementations had, as an undocu- mented feature, the ability to do the equivalent of <STRONG>clearok(...,</STRONG> <STRONG>1)</STRONG> by saying <STRONG>touchwin(stdscr)</STRONG> or <STRONG>clear(std-</STRONG> <STRONG>scr)</STRONG>. This will not work under ncurses.</PRE><H2>NOTES</H2><PRE> Note that all routines except <STRONG>wtouchln</STRONG> may be macros.</PRE><H2>SEE ALSO</H2><PRE> <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>. <STRONG><A HREF="curs_touch.3x.html">curs_touch(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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