curs_bkgd man page on Ultrix

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curs_bkgd(3X)							 curs_bkgd(3X)

NAME
       bkgdset,	 wbkgdset, bkgd, wbkgd - curses window background manipulation
       routines

SYNOPSIS
       #include <curses.h>

       void bkgdset(const chtype ch);
       void wbkgdset(WINDOW *win, const chtype ch);
       int bkgd(const chtype ch);
       int wbkgd(WINDOW *win, const chtype ch);
       chtype getbkgd(WINDOW *win);

DESCRIPTION
       The bkgdset and wbkgdset routines  manipulate  the  background  of  the
       named window.  The window background is a chtype consisting of any com‐
       bination	 of  attributes	 (i.e.,	 rendition)  and  a  character.	   The
       attribute part of the background is combined (OR'ed) with all non-blank
       characters that are written into the  window  with  waddch.   Both  the
       character  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 terminal, the attribute part  of
       the  background	is displayed as the graphic rendition of the character
       put on the screen.

       The bkgd and wbkgd functions 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 background rendition.

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

       The getbkgd function returns  the  given	 window's  current  background
       character/attribute pair.

RETURN VALUE
       The  routines  bkgd and wbkgd return the integer OK.  The SVr4.0 manual
       says "or a non-negative integer if immedok is set", but this appears to
       be an error.

NOTES
       Note that bkgdset and bkgd may be macros.

PORTABILITY
       These functions are described in the XSI Curses standard, Issue 4.  The
       draft does not include const qualifiers on the arguments.  The standard
       specifies  that	bkgd  and  wbkgd  return ERR, on failure. but gives no
       failure conditions.

SEE ALSO
       curses(3X), curs_addch(3X), curs_outopts(3X)

								 curs_bkgd(3X)
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