border_set, wborder_set, box_set, hline_set, whline_set, mvhline_set, mvwhline_set, vline_set,

       The border_set and wborder_set functions draw a border around the  edges  of  the  current  or  specified
       window.  These functions do not change the cursor position, and do not wrap.

       Other than the window, each argument is a complex 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:
              WACS_VLINE,
              WACS_VLINE,
              WACS_HLINE,
              WACS_HLINE,
              WACS_ULCORNER,
              WACS_URCORNER,
              WACS_LLCORNER, and
              WACS_LRCORNER.

       box_set(win, verch,horch); is a shorthand for the following call:

       wborder_set(win,verch,verch,horch,horch,NULL,NULL,NULL,NULL);

       The *line_set functions use wch to draw a line starting at the current cursor  position  in  the  window.
       The  line is at most n characters long or as many as fit into the window.  The current cursor position is
       not changed.

       The hline_set, mvhline_set, mvwhline_set, and whline_set functions draw a line proceeding toward the last
       column of the same line.

       The vline_set, mvvline_set, mvwvline_set, and wvline_set functions draw a line proceeding toward the last
       line of the window.

       X/Open Curses Issue 4 (1995) initially specified these functions.

border_set,   wborder_set,   box_set,   hline_set,   whline_set,  mvhline_set,  mvwhline_set,  vline_set,
       wvline_set, mvvline_set, mvwvline_set - draw borders and lines in a curses window of wide characters

border_set, hline_set,  mvhline_set,  mvvline_set,  mvwhline_set,  mvwvline_set,  and  vline_set  may  be
       implemented as macros.

       X/Open Curses Issue 4 describes these functions.  It specifies no error conditions for them.

       Upon successful completion, these functions return OK.  Otherwise, they return ERR.

       Functions using a window parameter return ERR if it is null.

       Functions prefixed with “mv” first perform cursor movement and fail if the position (y, x) is outside the
       window boundaries.

ncurses(3NCURSES), add_wch(3NCURSES), border(3NCURSES), outopts(3NCURSES)

ncurses 6.5                                        2025-02-01                               border_set(3NCURSES)

#include<curses.h>intborder_set(constcchar_t*ls,constcchar_t*rs,constcchar_t*ts,constcchar_t*bs,constcchar_t*tl,constcchar_t*tr,constcchar_t*bl,constcchar_t*br);intwborder_set(WINDOW*win,constcchar_t*ls,constcchar_t*rs,constcchar_t*ts,constcchar_t*bs,constcchar_t*tl,constcchar_t*tr,constcchar_t*bl,constcchar_t*br);intbox_set(WINDOW*win,constcchar_t*verch,constcchar_t*horch);inthline_set(constcchar_t*wch,intn);intwhline_set(WINDOW*win,constcchar_t*wch,intn);intmvhline_set(inty,intx,constcchar_t*wch,intn);intmvwhline_set(WINDOW*win,inty,intx,constcchar_t*wch,intn);intvline_set(constcchar_t*wch,intn);intwvline_set(WINDOW*win,constcchar_t*wch,intn);intmvvline_set(inty,intx,constcchar_t*wch,intn);intmvwvline_set(WINDOW*win,inty,intx,constcchar_t*wch,intn);