# curs_border 3x 2023-12-16 ncurses 6.4 Library calls

    curs_border(3x)                  Library calls                 curs_border(3x)

## NAME

           border,  wborder, box, hline, whline, vline, wvline, mvhline, mvwhline,
           mvvline, mvwvline - draw borders  and  lines  in  a  curses  window  of
           characters

## SYNOPSIS

           #include <curses.h>

           int border(chtype ls, chtype rs, chtype ts, chtype bs,
                      chtype tl, chtype tr, chtype bl, chtype br);
           int wborder(WINDOW *win, chtype ls, chtype rs,
                       chtype ts, chtype bs, chtype tl, chtype tr,
                       chtype bl, chtype br);

           int box(WINDOW *win, chtype verch, chtype horch);

           int hline(chtype ch, int n);
           int whline(WINDOW *win, chtype ch, int n);
           int vline(chtype ch, int n);
           int wvline(WINDOW *win, chtype ch, int n);

           int mvhline(int y, int x, chtype ch, int n);
           int mvwhline(WINDOW *win, int y, int x, chtype ch, int n);
           int mvvline(int y, int x, chtype ch, int n);
           int mvwvline(WINDOW *win, int y, int x, chtype ch, int n);

## DESCRIPTION

           The  border,  wborder and box routines draw a box around the edges of a
           window.  Other than the window,  each  argument  is  a  character  with
           attributes:

                  ls - left side,
                  rs - right side,
                  ts - top side,
                  bs - bottom side,
                  tl - top left-hand corner,
                  tr - top right-hand corner,
                  bl - bottom left-hand corner, and
                  br - bottom right-hand corner.

           If  any  of  these  arguments  is  zero, then the corresponding default
           values (defined in curses.h) are used instead:

                  ACS_VLINE,
                  ACS_VLINE,
                  ACS_HLINE,
                  ACS_HLINE,
                  ACS_ULCORNER,
                  ACS_URCORNER,
                  ACS_LLCORNER,
                  ACS_LRCORNER.

           box(win,  verch,  horch)  is  a  shorthand  for  the  following   call:
           wborder(win, verch, verch, horch, horch, 0, 0, 0, 0).

           The  hline  and whline functions draw a horizontal (left to right) line
           using ch starting at the current cursor position in  the  window.   The
           current  cursor  position  is  not  changed.   The  line  is  at most n
           characters long, or as many as fit into the window.

           The vline and wvline functions draw a vertical  (top  to  bottom)  line
           using  ch  starting  at the current cursor position in the window.  The
           current cursor position  is  not  changed.   The  line  is  at  most  n
           characters long, or as many as fit into the window.

## RETURN VALUE

           All  routines 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.

           X/Open does not  define  any  error  conditions.   This  implementation
           returns an error if the window pointer is null.

           Functions  with  a  "mv"  prefix  first perform a cursor movement using
           wmove, and return an error if the position is outside the window, or if
           the window pointer is null.

## NOTES

           The  borders  generated  by these functions are inside borders (this is
           also true of SVr4 curses, though the fact is not documented).

           Note that border and box may be macros.

## PORTABILITY

           These functions are described in the XSI Curses standard, Issue 4.

## SEE ALSO

           curses(3x), curs_outopts(3x)

    ncurses 6.4                       2023-12-16                   curs_border(3x)