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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"><!-- * t **************************************************************************** * Copyright (c) 1998-2002,2003 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_addch.3x,v 1.22 2003/12/27 18:38:28 tom Exp @--><HTML><HEAD><TITLE>curs_addch 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_addch 3x</H1><HR><PRE><!-- Manpage converted by man2html 3.0.1 --><STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG> <STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG></PRE><H2>NAME</H2><PRE> <STRONG>addch</STRONG>, <STRONG>waddch</STRONG>, <STRONG>mvaddch</STRONG>, <STRONG>mvwaddch</STRONG>, <STRONG>echochar</STRONG>, <STRONG>wechochar</STRONG> - add a character (with attributes) 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>addch(const</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG> <STRONG>int</STRONG> <STRONG>waddch(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>const</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG> <STRONG>int</STRONG> <STRONG>mvaddch(int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>const</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG> <STRONG>int</STRONG> <STRONG>mvwaddch(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>const</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG> <STRONG>int</STRONG> <STRONG>echochar(const</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG> <STRONG>int</STRONG> <STRONG>wechochar(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>const</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG></PRE><H2>DESCRIPTION</H2><PRE> The <STRONG>addch</STRONG>, <STRONG>waddch</STRONG>, <STRONG>mvaddch</STRONG> and <STRONG>mvwaddch</STRONG> routines put the character <EM>ch</EM> into the given window at its current window position, which is then advanced. They are analogous to <STRONG>putchar</STRONG> in <STRONG><A HREF="stdio.3.html">stdio(3)</A></STRONG>. If the advance is at the right mar- gin, the cursor automatically wraps to the beginning of the next line. At the bottom of the current scrolling region, if <STRONG>scrollok</STRONG> is enabled, the scrolling region is scrolled up one line. If <EM>ch</EM> is a tab, newline, or backspace, the cursor is moved appropriately within the window. Backspace moves the cur- sor one character left; at the left edge of a window it does nothing. Newline does a <STRONG>clrtoeol</STRONG>, then moves the cursor to the window left margin on the next line, scrolling the window if on the last line. Tabs are con- sidered to be at every eighth column. The tab interval may be altered by setting the <STRONG>TABSIZE</STRONG> variable. If <EM>ch</EM> is any control character other than tab, newline, or backspace, it is drawn in <STRONG>^</STRONG><EM>X</EM> notation. Calling <STRONG>winch</STRONG> after adding a control character does not return the char- acter itself, but instead returns the ^-representation of the control character. Video attributes can be combined with a character argument passed to <STRONG>addch</STRONG> or related functions by logical-ORing them into the character. (Thus, text, including attributes, can be copied from one place to another using <STRONG>inch</STRONG> and <STRONG>addch</STRONG>.) See the <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG> page for values of prede- fined video attribute constants that can be usefully OR'ed into characters. The <STRONG>echochar</STRONG> and <STRONG>wechochar</STRONG> routines are equivalent to a call to <STRONG>addch</STRONG> followed by a call to <STRONG>refresh</STRONG>, or a call to <STRONG>waddch</STRONG> followed by a call to <STRONG>wrefresh</STRONG>. The knowledge that only a single character is being output is used and, for non-control characters, a considerable performance gain may be seen by using these routines instead of their equivalents. <STRONG>Line</STRONG> <STRONG>Graphics</STRONG> The following variables may be used to add line drawing characters to the screen with routines of the <STRONG>addch</STRONG> fam- ily. The default character listed below is used if the <STRONG>acsc</STRONG> capability doesn't define a terminal-specific replacement for it (but see the EXTENSIONS section below). The names are taken from VT100 nomenclature. <EM>Name</EM> <EM>Default</EM> <EM>Description</EM> -------------------------------------------------- ACS_BLOCK # solid square block ACS_BOARD # board of squares ACS_BTEE + bottom tee ACS_BULLET o bullet ACS_CKBOARD : checker board (stipple) ACS_DARROW v arrow pointing down ACS_DEGREE ' degree symbol ACS_DIAMOND + diamond ACS_GEQUAL > greater-than-or-equal-to ACS_HLINE - horizontal line ACS_LANTERN # lantern symbol ACS_LARROW < arrow pointing left ACS_LEQUAL < less-than-or-equal-to ACS_LLCORNER + lower left-hand corner ACS_LRCORNER + lower right-hand corner ACS_LTEE + left tee ACS_NEQUAL ! not-equal ACS_PI * greek pi ACS_PLMINUS # plus/minus ACS_PLUS + plus ACS_RARROW > arrow pointing right ACS_RTEE + right tee ACS_S1 - scan line 1 ACS_S3 - scan line 3 ACS_S7 - scan line 7 ACS_S9 _ scan line 9 ACS_STERLING f pound-sterling symbol ACS_TTEE + top tee ACS_UARROW ^ arrow pointing up ACS_ULCORNER + upper left-hand corner ACS_URCORNER + upper right-hand corner ACS_VLINE | vertical line</PRE><H2>RETURN VALUE</H2><PRE> All routines return the integer <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> on success (the SVr4 manuals specify only "an integer value other than <STRONG>ERR</STRONG>") upon successful completion, unless other- wise noted in the preceding routine descriptions.</PRE><H2>NOTES</H2><PRE> Note that <STRONG>addch</STRONG>, <STRONG>mvaddch</STRONG>, <STRONG>mvwaddch</STRONG>, and <STRONG>echochar</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. Some ACS symbols (ACS_S3, ACS_S7, ACS_LEQUAL, ACS_GEQUAL, ACS_PI, ACS_NEQUAL, ACS_STERLING) were not documented in any publicly released System V. However, many publicly available terminfos include <STRONG>acsc</STRONG> strings in which their key characters (pryz{|}) are embedded, and a second-hand list of their character descriptions has come to light. The ACS-prefixed names for them were invented for <STRONG><A HREF="ncurses.3x.html">ncurses(3x)</A></STRONG>. The <STRONG>TABSIZE</STRONG> variable is implemented in some versions of curses, but is not part of X/Open curses.</PRE><H2>SEE ALSO</H2><PRE> <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG>, <STRONG><A HREF="curs_clear.3x.html">curs_clear(3x)</A></STRONG>, <STRONG><A HREF="curs_inch.3x.html">curs_inch(3x)</A></STRONG>, <STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>, <STRONG><A HREF="putc.3S.html">putc(3S)</A></STRONG>. <STRONG><A HREF="curs_addch.3x.html">curs_addch(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>?? 快捷鍵說明
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