curs_bkgrnd 3x

curs_bkgrnd(3x)                                         curs_bkgrnd(3x)


       bkgrnd,  wbkgrnd,  bkgrndset, wbkgrndset, getbkgrnd, wget-
       bkgrnd - curses  window  complex  background  manipulation


       #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);


       The bkgrndset and wbkgrndset routines manipulate the back-
       ground 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 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  bkgrnd and wbkgrnd functions set the background prop-
       erty 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  getbkgrnd function returns the given window's current
       background character/attribute pair via the wch pointer.


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


       The bkgrndset and wbkgrndset  routines  do  not  return  a

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


       curses(3x), curs_bkgd(3x)


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