1curs_bkgrnd(3X)                                                curs_bkgrnd(3X)
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NAME

6       bkgrnd,  wbkgrnd, bkgrndset, wbkgrndset, getbkgrnd, wgetbkgrnd - curses
7       window complex background manipulation routines
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SYNOPSIS

10       #include <curses.h>
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12       int bkgrnd( const cchar_t *wch);
13       int wbkgrnd( WINDOW *win, const cchar_t *wch);
14       void bkgrndset(const cchar_t *wch );
15       void wbkgrndset(WINDOW *win, const cchar_t *wch);
16       int getbkgrnd(cchar_t *wch);
17       int wgetbkgrnd(WINDOW *win, cchar_t *wch);
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DESCRIPTION

20       The bkgrndset and wbkgrndset routines manipulate the background of  the
21       named  window.   The  window  background is a cchar_t consisting of any
22       combination of attributes (i.e., rendition) and  a  complex  character.
23       The  attribute part of the background is combined (OR'ed) with all non-
24       blank characters that are written into the window  with  waddch.   Both
25       the  character  and attribute parts of the background are combined with
26       the blank characters.  The background becomes a property of the charac‐
27       ter   and   moves   with   the  character  through  any  scrolling  and
28       insert/delete line/character operations.
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30       To the extent possible on a particular terminal, the attribute part  of
31       the  background  is displayed as the graphic rendition of the character
32       put on the screen.
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34       The bkgrnd and wbkgrnd functions set the  background  property  of  the
35       current  or specified window and then apply this setting to every char‐
36       acter position in that window:
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38              The rendition of every character on the screen is changed to the
39              new background rendition.
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41              Wherever  the former background character appears, it is changed
42              to the new background character.
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44       The getbkgrnd function returns the given  window's  current  background
45       character/attribute pair via the wch pointer.
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NOTES

48       Note that bkgrnd, bkgrndset, and getbkgrnd may be macros.
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RETURN VALUES

51       The bkgrndset and wbkgrndset routines do not return a value.
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53       Upon  successful completion, the other functions return OK.  Otherwise,
54       they return ERR.  A null window pointer is treated as an error.
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SEE ALSO

57       curses(3X), curs_bkgd(3X)
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61                                                               curs_bkgrnd(3X)
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