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curs_bkgrnd (3X)                                                                              curs_bkgrnd (3X)



NAME
       bkgrnd,  wbkgrnd,  bkgrndset,  wbkgrndset,  getbkgrnd,  wgetbkgrnd - curses window complex background
       manipulation routines

SYNOPSIS
       #include <curses.h>

       int bkgrnd( const cchar_t *wch);
       int wbkgrnd( WINDOW *win, const cchar_t *wch);
       void bkgrndset(const cchar_t *wch );
       void wbkgrndset(WINDOW *win, const cchar_t *wch);
       int getbkgrnd(cchar_t *wch);
       int wgetbkgrnd(WINDOW *win, cchar_t *wch);

DESCRIPTION
       The bkgrndset and wbkgrndset routines manipulate the background of  the  named  window.   The  window
       background  is  a cchar_t consisting of any combination of attributes (i.e., rendition) and a complex
       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 back-ground background
       ground 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 bkgrnd and wbkgrnd 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 charac-ter. character.
              ter.

       The getbkgrnd function returns the given window's current background character/attribute pair via the
       wch pointer.

NOTES
       Note that bkgrnd, bkgrndset, and getbkgrnd may be macros.

RETURN VALUES
       The bkgrndset and wbkgrndset routines do not return a value.

       Upon  successful completion, the other functions return OK.  Otherwise, they return ERR.  A null win-dow window
       dow pointer is treated as an error.

SEE ALSO
       curses(3X), curs_bkgd (3X)



                                                                                             curs_bkgrnd (3X)