xref: /illumos-gate/usr/src/man/man3xcurses/addch.3xcurses (revision 2aeafac3612e19716bf8164f89c3c9196342979c)
te
Copyright (c) 1990, 1995 by Mortice Kern Systems Inc. All Rights Reserved Portions Copyright (c) 1996, Sun Microsystems, Inc. All Rights Reserved
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
ADDCH 3XCURSES "Jun 5, 2002"
NAME
addch, mvaddch, mvwaddch, waddch - add a character (with rendition) to a window
SYNOPSIS

cc [ flag... ] file... -I /usr/xpg4/include  -L  /usr/xpg4/lib \e
 -R  /usr/xpg4/lib  -lcurses  [ library... ]

c89 [ flag... ] file... -lcurses [ library ... ]

#include <curses.h>

int addch(const chtype ch);

int mvaddch(int y, int x, const chtype ch);

int mvwaddch(WINDOW *win, int y, int x, const chtype ch);

int waddch(WINDOW *win, const chtype ch);
DESCRIPTION

The addch() function writes a character to the stdscr window at the current cursor position. The mvaddch() and mvwaddch() functions write the character to the position indicated by the x (column) and y (row) parameters. The mvaddch() function writes the character to the stdscr window, while mvwaddch() writes the character to the window specified by win. The waddch() function is identical to addch(), but writes the character to the window specified by win.

These functions advance the cursor after writing the character. Characters that do not fit on the end of the current line are wrapped to the beginning of the next line unless the current line is the last line of the window and scrolling is disabled. In that situation, characters which extend beyond the end of the line are discarded.

When ch is a backspace, carriage return, newline, or tab, X/Open Curses moves the cursor appropriately. Each tab character moves the cursor to the next tab stop. By default, tab stops occur every eight columns. When ch is a control character other than backspace, carriage return, newline, or tab, it is written using ^x notation, where x is a printable character. When X/Open Curses writes ch to the last character position on a line, it automatically generates a newline. When ch is written to the last character position of a scrolling region and scrollok() is enabled, X/Open Curses scrolls the scrolling region up one line (see clearok(3XCURSES)).

PARAMETERS
wchstr

Is a pointer to the cchar_t string to be copied to the window.

n

Is the maximum number of characters to be copied from wchstr. If n is less than 0, the entire string is written or as much of it as fits on the line.

y

Is the y (row) coordinate of the starting position of wchstr in the window.

x

Is the x (column) coordinate of the starting position of wchstr in the window.

win

Is a pointer to the window to which the string is to be copied.

RETURN VALUES

On success, these functions return OK. Otherwise, they return ERR.

ERRORS

None.

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE
Interface Stability Standard
MT-Level Unsafe
SEE ALSO

attroff(3XCURSES), bkgdset(3XCURSES), doupdate(3XCURSES), inch(3XCURSES), insch(3XCURSES), libcurses(3XCURSES), nl(3XCURSES), printw(3XCURSES), scrollok(3XCURSES), scrl(3XCURSES), terminfo(4), attributes(5), standards(5)