curs_bkgd(3X)                    UNIX System V                    curs_bkgd(3X)


NAME
      cursbkgd:  bkgdset, wbkgdset, bkgd, wbkgd - 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);

DESCRIPTION
      The bkgdset and wbkgdset routines manipulate the background of the named
      window.  Background is a chtype consisting of any combination of
      attributes and a character.  The attribute part of the background is
      combined (ORed) 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 routines combine the new background with every
      position in the window.  Background is any combination of attributes and
      a character.  Only the attribute part is used to set the background of
      non-blank 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.

RETURN VALUE
      bkgd and wbkgd return the integer OK, or a non-negative integer, if
      immedok is set.

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

      Note that bkgdset and bkgd may be macros.

SEE ALSO
      curses(3X), cursaddch(3X), cursoutopts(3X)










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