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CURSES_ADDCH(3)            Library Functions Manual            CURSES_ADDCH(3)

     curses_addch, addch, waddch, mvaddch, mvwaddch - curses add characters to
     windows routines

     Curses Library (libcurses, -lcurses)

     #include <curses.h>

     addch(chtype ch);

     waddch(WINDOW *win, chtype ch);

     mvaddch(int y, int x, chtype ch);

     mvwaddch(WINDOW *win, int y, int x, chtype ch);

     These functions add characters to 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.

     Some terminals support the display of line drawing and graphics
     characters.  These characters can be added using their defined names, as
     shown in the table below.  Where the terminal does not support a specific
     character, the default (non-graphics) character is displayed instead.

           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

           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

     Functions returning pointers will return NULL if an error is detected.
     The functions that return an int will return one of the following values:

     OK   The function completed successfully.
     ERR  An error occurred in the function.

     curses_addchstr(3), curses_addstr(3), curses_attributes(3),
     curses_cursor(3), curses_delch(3), curses_inch(3), curses_insch(3)

     The NetBSD Curses library complies with the X/Open Curses specification,
     part of the Single Unix Specification.

     The Curses package appeared in 4.0BSD.

NetBSD 9.99                    October 25, 2018                    NetBSD 9.99