1.\" $NetBSD: curses_addch.3,v 1.5 2003/05/21 21:22:15 jdc Exp $ 2.\" 3.\" Copyright (c) 2002 4.\" Brett Lymn (blymn@NetBSD.org, brett_lymn@yahoo.com.au) 5.\" 6.\" This code is donated to the NetBSD Foundation by the Author. 7.\" 8.\" Redistribution and use in source and binary forms, with or without 9.\" modification, are permitted provided that the following conditions 10.\" are met: 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 3. The name of the Author may not be used to endorse or promote 17.\" products derived from this software without specific prior written 18.\" permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" 33.Dd May 21, 2003 34.Dt CURSES_ADDCH 3 35.Os 36.Sh NAME 37.Nm curses_addch , 38.Nm addch , 39.Nm waddch , 40.Nm mvaddch , 41.Nm mvwaddch 42.Nd curses add characters to windows routines 43.Sh LIBRARY 44.Lb libcurses 45.Sh SYNOPSIS 46.In curses.h 47.Ft int 48.Fn addch "chtype ch" 49.Ft int 50.Fn waddch "WINDOW *win" "chtype ch" 51.Ft int 52.Fn mvaddch "int y" "int x" "chtype ch" 53.Ft int 54.Fn mvwaddch "WINDOW *win" "int y" "int x" "chtype ch" 55.Sh DESCRIPTION 56These functions add characters to 57.Dv stdscr 58or to the specified window. 59.Pp 60The 61.Fn addch 62function adds the character given in 63.Fa ch 64to 65.Dv stdscr 66at the current cursor position and advances the current cursor position by one. 67Any character attributes set in 68.Fa ch 69will be merged with the background attributes currently set on 70.Dv stdscr . 71.Pp 72The 73.Fn waddch 74function is the same as the 75.Fn addch 76function, excepting that the character is added to the window specified by 77.Fa win . 78.Pp 79The 80.Fn mvaddch 81and 82.Fn mvwaddch 83functions are the same as the 84.Fn addch 85and 86.Fn waddch 87functions, respectively, excepting that 88.Fn wmove 89is called to move the cursor to the position specified by 90.Fa y , 91.Fa x 92before the character is added to the window. 93.Sh RETURN VALUES 94Functions returning pointers will return 95.Dv NULL 96if an error is detected. 97The functions that return an int will return one of the following 98values: 99.Pp 100.Bl -tag -width ERR -compact 101.It Er OK 102The function completed successfully. 103.It Er ERR 104An error occurred in the function. 105.El 106.Sh SEE ALSO 107.Xr curses_addchstr 3 , 108.Xr curses_addstr 3 , 109.Xr curses_attributes 3 , 110.Xr curses_cursor 3 , 111.Xr curses_delch 3 , 112.Xr curses_inch 3 , 113.Xr curses_insertch 3 114.Sh STANDARDS 115The 116.Nx 117Curses library complies with the X/Open Curses specification, part of the 118Single Unix Specification. 119.Sh HISTORY 120The Curses package appeared in 121.Bx 4.0 . 122