NAME

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

SYNOPSIS

       #include <curses.h>

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

DESCRIPTION

   bkgdset
       The  bkgdset  and wbkgdset routines manipulate the background of the named window.  The window background
       is a chtype consisting of any combination 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.

   bkgd
       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.

   getbkgd
       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.  It  specifies  that  bkgd  and  wbkgd
       return ERR on failure, but gives no failure conditions.

SEE ALSO

       ncurses(3NCURSES), addch(3NCURSES), attr(3NCURSES), outopts(3NCURSES)

                                                                                                  bkgd(3NCURSES)