getbkgd man page on DigitalUNIX

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curs_bkgd(3)							  curs_bkgd(3)

NAME
       curs_bkgd,  bkgd,  wbkgd,  bkgdset,  wbkgdset,  getbkgd	- Routines for
       manipulating the background in a Curses window

SYNOPSIS
       #include <curses.h>

       int bkgd(
	       chtype ch ); int wbkgd(
	       WINDOW *win,
	       chtype ch ); void bkgdset(
	       chtype ch ); voidwbkgdset(
	       WINDOW *win,
	       chtype ch ); chtypegetbkgd(
	       WINDOW *win );

LIBRARY
       Curses Library (libcurses)

STANDARDS
       Interfaces documented on this reference page conform to industry	 stan‐
       dards as follows:

       bkgd, wbkgd, bkgdset, wbkgdset, getbkgd:	 XCURSES4.2

       Refer  to  the  standards(5)  reference page for more information about
       industry standards and associated tags.

DESCRIPTION
       The bkgdset and wbkgdset routines  manipulate  the  background  of  the
       named  window. Background is defined as chtype and consists of any com‐
       bination of attributes and a character.	 The  attribute	 part  of  the
       background  is  combined	 (by using an inclusive OR operation) with all
       nonblank characters that waddch writes into the window. Both the	 char‐
       acter and attribute parts of the background are combined with the blank
       characters. The background becomes a  property  of  the	character  and
       moves  with  the	 character  through  any  scrolling  and insert/delete
       line/character operations. To the extent possible on a particular  ter‐
       minal, the attribute part of the background is displayed as the graphic
       rendition of the character put on the screen.

       The bkgd and wbkgd routines combine the new background with every posi‐
       tion  in	 the window. Background is any combination of attributes and a
       character. Only the attribute part is used to  set  the	background  of
       nonblank	 characters,  while both character and attributes are used for
       blank positions. To the extent possible on a particular	terminal,  the
       attribute  part of the background is displayed as the graphic rendition
       of the character put on the screen.

       The getbkgd routine returns the background  character  and  attributes,
       encoded in a chtype data element, for the specified window.

NOTES
       The  header  file  <curses.h>  automatically  includes  the header file
       <stdio.h>.

       Note that bkgdset and bkgd may be macros.

RETURN VALUES
       The bkgd and wbkgd routines return OK on success or ERR on failure.

       The wbkgdset and wbkgdset routines have no return value.

       The getbkgd routine returns the background character and its  rendition
       on success or ERR on failure.

SEE ALSO
       Functions: curses(3), curs_addch(3), curs_bkgrnd(3), curs_outopts(3)

       Others: standards(5)

								  curs_bkgd(3)
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