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CURSES_ADDCH(3)		 BSD 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.

BSD				 July 11, 2007				   BSD
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