| CURSES_ADDCH(3) | Library Functions Manual | CURSES_ADDCH(3) | 
curses_addch, addch,
  waddch, mvaddch,
  mvwaddch —
#include <curses.h>
int
  
  addch(chtype
    ch);
int
  
  waddch(WINDOW
    *win, chtype
  ch);
int
  
  mvaddch(int
    y, int x,
    chtype ch);
int
  
  mvwaddch(WINDOW
    *win, int y,
    int x,
    chtype ch);
stdscr or to the
  specified window.
The addch() function adds the character
    given in ch to stdscr at the
    current cursor position and advances the current cursor position by one. Any
    character attributes set in ch will be merged with the
    background attributes currently set on stdscr.
The waddch() function is the same as the
    addch() function, excepting that the character is
    added to the window specified by win.
The mvaddch() and
    mvwaddch() functions are the same as the
    addch() and waddch()
    functions, respectively, excepting that wmove() is
    called to move the cursor to the position specified by
    y, x before the character is
    added to the window.
| Name | Default | Description | 
| ACS_RARROW | > | Arrow pointing right | 
| ACS_LARROW | < | Arrow pointing left | 
| ACS_UARROW | ^ | Arrow pointing up | 
| ACS_DARROW | v | Arrow pointing down | 
| ACS_BLOCK | # | Solid square block | 
| ACS_DIAMOND | + | Diamond | 
| ACS_CKBOARD | : | Checker board (stipple) | 
| ACS_DEGREE | ' | Degree symbol | 
| ACS_PLMINUS | # | Plus/minus | 
| ACS_BOARD | # | Board of squares | 
| ACS_LANTERN | # | Lantern symbol | 
| ACS_LRCORNER | + | Lower right-hand corner | 
| ACS_URCORNER | + | Upper right-hand corner | 
| ACS_ULCORNER | + | Upper left-hand corner | 
| ACS_LLCORNER | + | Lower left-hand corner | 
| ACS_PLUS | + | Plus | 
| ACS_HLINE | - | Horizontal line | 
| ACS_S1 | - | Scan line 1 | 
| ACS_S9 | - | Scan line 9 | 
| ACS_LTEE | + | Left tee | 
| ACS_RTEE | + | Right tee | 
| ACS_BTEE | + | Bottom tee | 
| ACS_TTEE | + | Top tee | 
| ACS_VLINE | | | Vertical line | 
| ACS_BULLET | o | Bullet | 
The following additional, ncurses compatible, characters are also supported.
| Name | Default | Description | 
| ACS_S3 | - | Scan line 3 | 
| ACS_S7 | - | Scan line 7 | 
| ACS_LEQUAL | < | Less than or equal to | 
| ACS_GEQUAL | > | Greater than or equal to | 
| ACS_PI | * | Pi symbol | 
| ACS_NEQUAL | ! | Not equal to | 
| ACS_STERLING | f | Sterling symbol | 
For compatibility with some System V implementations, the following definitions are also supported.
| System V Name | NetBSD Curses Name | 
| ACS_SBBS | ACS_LRCORNER | 
| ACS_BBSS | ACS_URCORNER | 
| ACS_BSSB | ACS_ULCORNER | 
| ACS_SSBB | ACS_LLCORNER | 
| ACS_SSSS | ACS_PLUS | 
| ACS_BSBS | ACS_HLINE | 
| ACS_SSSB | ACS_LTEE | 
| ACS_SBSS | ACS_RTEE | 
| ACS_SSBS | ACS_BTEE | 
| ACS_BSSS | ACS_TTEE | 
| ACS_SBSB | ACS_VLINE | 
NULL if an
  error is detected. The functions that return an int will return one of the
  following values:
OKERR| October 25, 2018 | NetBSD 10.0 |