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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"><!-- **************************************************************************** * Copyright (c) 2001,2002 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_add_wch.3x,v 1.4 2002/02/16 22:28:43 tom Exp @--><HTML><HEAD><TITLE>curs_add_wch 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_add_wch 3x</H1><HR><PRE><!-- Manpage converted by man2html 3.0.1 --><STRONG><A HREF="curs_add_wch.3x.html">curs_add_wch(3x)</A></STRONG> <STRONG><A HREF="curs_add_wch.3x.html">curs_add_wch(3x)</A></STRONG></PRE><H2>NAME</H2><PRE> <STRONG>add_wch</STRONG>, <STRONG>wadd_wch</STRONG>, <STRONG>mvadd_wch</STRONG>, <STRONG>mvwadd_wch</STRONG>, <STRONG>echo_wchar</STRONG>, <STRONG>wecho_wchar</STRONG> - add a complex character and rendition to a <STRONG>curses</STRONG> window, then advance the cursor</PRE><H2>SYNOPSIS</H2><PRE> <STRONG>#include</STRONG> <STRONG><curses.h></STRONG> <STRONG>int</STRONG> <STRONG>add_wch(</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG> <STRONG>int</STRONG> <STRONG>wadd_wch(</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG> <STRONG>int</STRONG> <STRONG>mvadd_wch(</STRONG> <STRONG>int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG> <STRONG>int</STRONG> <STRONG>mvwadd_wch(</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG> <STRONG>int</STRONG> <STRONG>echo_wchar(</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG> <STRONG>int</STRONG> <STRONG>wecho_wchar(</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG></PRE><H2>DESCRIPTION</H2><PRE> The <STRONG>add_wch</STRONG>, <STRONG>wadd_wch</STRONG>, <STRONG>mvadd_wch</STRONG>, and <STRONG>mvwadd_wch</STRONG> functions put the complex character <EM>wch</EM> into the given window at its current position, which is then advanced. These functions perform wrapping and special-character processing as fol- lows: - If <EM>wch</EM> refers to a spacing character, then any previ- ous character at that location is removed. A new character specified by <EM>wch</EM> is placed at that location with rendition specified by <EM>wch</EM>. The cursor then advances to the next spacing character on the screen. - If <EM>wch</EM> refers to a non-spacing character, all previ- ous characters at that location are preserved. The non-spacing characters of <EM>wch</EM> are added to the spac- ing complex character, and the rendition specified by <EM>wch</EM> is ignored. - If the character part of <EM>wch</EM> is a tab, newline, backspace or other control character, the window is updated and the cursor moves as if <STRONG><A HREF="addch.3x.html">addch(3x)</A></STRONG> were called. The <STRONG>echo_wchar</STRONG> function is functionally equivalent to a call to <STRONG>add_wch</STRONG> followed by a call to <STRONG>refresh</STRONG>. Similarly, the <STRONG>wecho_wchar</STRONG> is functionally equivalent to a call to <STRONG>wadd_wch</STRONG> followed by a call to <STRONG>wrefresh</STRONG>. The knowledge that only a single character is being output is taken into consideration and, for non-control characters, a consider- able performance gain might be seen by using the *<STRONG>echo</STRONG>* functions instead of their equivalents.</PRE><H2>RETURN VALUES</H2><PRE> All routines return the integer <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> on success.</PRE><H2>NOTES</H2><PRE> Note that <STRONG>add_wch</STRONG>, <STRONG>mvadd_wch</STRONG>, <STRONG>mvwadd_wch</STRONG>, and <STRONG>echo_wchar</STRONG> may be macros.</PRE><H2>PORTABILITY</H2><PRE> All these functions are described in the XSI Curses stan- dard, Issue 4. The defaults specified for forms-drawing characters apply in the POSIX locale. XSI documents constants beginning with <STRONG>WACS_</STRONG> which are used for line-drawing. Those are not currently imple- mented in <STRONG>ncurses</STRONG>.</PRE><H2>SEE ALSO</H2><PRE> <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_attr_get.3x.html">curs_attr_get(3x)</A></STRONG>, <STRONG><A HREF="curs_clear.3x.html">curs_clear(3x)</A></STRONG>, <STRONG>curs_out-</STRONG> <STRONG><A HREF="curs_outopts.3x.html">opts(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>, <STRONG><A HREF="putwc.3.html">putwc(3)</A></STRONG> <STRONG><A HREF="curs_add_wch.3x.html">curs_add_wch(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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