CURSES_ADDCH(3)         NetBSD Library Functions Manual        CURSES_ADDCH(3)

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

LIBRARY
     Curses Library (libcurses, -lcurses)

SYNOPSIS
     #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);

DESCRIPTION
     These functions add characters to stdscr or to the specified window.

     The addch() function adds the character given in ch to stdscr at the cur-
     rent 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.

   LINE DRAWING CHARACTERS
     Some terminals support the display of line drawing and graphics charac-
     ters.  These characters can be added using their defined names, as shown
     in the table below.  Where the terminal does not support a specific char-
     acter, 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 sup-
     ported.

           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 defi-
     nitions 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

RETURN VALUES
     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.

SEE ALSO
     curses_addchstr(3), curses_addstr(3), curses_attributes(3),
     curses_cursor(3), curses_delch(3), curses_inch(3), curses_insertch(3)

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

HISTORY
     The Curses package appeared in 4.0BSD.

NetBSD 5.0_STABLE                July 11, 2007               NetBSD 5.0_STABLE
