xref: /titanic_52/usr/src/man/man3xcurses/bkgd.3xcurses (revision e5803b76927480e8f9b67b22201c484ccf4c2bcf)
te
Copyright (c) 1990, 1995 by Mortice Kern Systems Inc. All Rights Reserved Portions Copyright (c) 1999, 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]
BKGD 3XCURSES "Jun 5, 2002"
NAME
bkgd, bkgdset, getbkgd, wbkgd, wbkgdset - set or get the background character (and rendition) of 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 bkgd(chtype ch);

void bkgdset(chtype ch);

chtype getbkgd(WINDOW *win);

int wbkgd(WINDOW *win, chtype ch);

void wbkgdset(WINDOW *win, chtype ch);
DESCRIPTION

The bkgdset() and wbkgdset() functions turn off the previous background attributes, logical OR the requested attributes into the window rendition, and set the background property of the current or specified window based on the information in ch. If ch refers to a multi-column character, the results are undefined.

The bkgd() and wbkgd() functions turn off the previous background attributes, logical OR the requested attributes into the window rendition, and set the background property of the current or specified window and then apply this setting to every character position in that window:

The rendition of every character on the screen is changed to the new window rendition.

Wherever the former background character appears, it is changed to the new background character.

The getbkgd() function extracts the specified window's background character and rendition.

PARAMETERS
ch

Is the background character to be set.

win

Is a pointer to the window in which the background character is to be set.

RETURN VALUES

Upon successful completion, the bkgd() and wbkgd() functions return OK. Otherwise, they return ERR.

The bkgdset() and wbkgdset() functions do not return a value.

Upon successful completion, the getbkgd() function returns the specified window's background character and rendition. Otherwise, it returns (chtype)ERR.

ERRORS

No errors are defined.

USAGE

These functions are only guaranteed to operate reliably on character sets in which each character fits into a single byte, whose attributes can be expressed using only constants with the A_ prefix.

ATTRIBUTES

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

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

addch(3XCURSES), addchstr(3XCURSES), attroff(3XCURSES), bkgrnd(3XCURSES), clear(3XCURSES), clrtoeol(3XCURSES), clrtobot(3XCURSES), erase(3XCURSES), inch(3XCURSES), libcurses(3XCURSES), mvprintw(3XCURSES), attributes(5), standards(5)