curs_addch(3)						     Library Functions Manual						     curs_addch(3)

NAME

       curs_addch,  addch,  waddch,  mvaddch, mvwaddch, echochar, wechochar - Add a character (with attributes) to a Curses window and advance the
       cursor

SYNOPSIS

       #include <curses.h>

       int addch(
	       const chtype ch ); int waddch(
	       WINDOW *win,
	       const chtype ch ); int mvaddch(
	       int y,
	       int x,
	       const chtype ch ); int mvwaddch(
	       WINDOW *win,
	       int y,
	       int x,
	       const chtype ch ); int echochar(
	       const chtype ch ); int wechochar(
	       WINDOW *win,
	       const chtype ch );

LIBRARY

       Curses Library (libcurses)

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       addch, waddch, mvaddch, mvwaddch, echochar, wechochar:  XCURSES4.2

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

DESCRIPTION

       The addch, waddch, mvaddch, and mvwaddch routines put the character ch into the window at the current cursor position  of  the  window  and
       advance	the  position  of  the window cursor. Their function is similar to that of the putchar function. At the right margin, an automatic
       newline is performed. At the bottom of the scrolling region, if scrollok is enabled, the scrolling region is scrolled up one line.

       If ch is a tab, newline, or backspace, these functions move the cursor appropriately within the window. A newline  also	performs  clrtoeol
       before moving. Tabs are considered to be at every eighth column.

       If ch is another control character, it is drawn in the ^X notation. Calling winch after adding a control character does not return the con-
       trol character, but instead returns the representation of the control character.

       Video attributes can be combined with a character in a parameter through  an  inclusive	OR  operation.	This  operation  also  sets  these
       attributes.  (The  intent here is to allow text, including attributes, to be copied from one place to another by using inch and addch.  See
       the discussion on standout, predefined video attribute constants, in the curs_attr(3) reference page.)

       The echochar and wechochar routines are functionally equivalent to a call to addch followed by a call to refresh, or a call to waddch  fol-
       lowed  by  a  call to wrefresh. The knowledge that only a single character is being output is taken into consideration and, for non-control
       characters, a considerable performance gain may be realized by using these routines instead of their equivalents.

   Line Graphics
       The following variables may be used with routines of the addch family to add line-drawing characters to	the  screen.  When  variables  are
       defined for the terminal, the A_ALTCHARSET bit is turned on (see curs_attr(3)). Otherwise, the default character specified in the following
       list is stored in the variable. The names chosen for variables are consistent with the VT100 nomenclature.

       -------------------------------------------------
       Name	      Default	Glyph Description
       -------------------------------------------------
       ACS_ULCORNER   + 	upper left-hand corner
       ACS_LLCORNER   + 	lower left-hand corner
       ACS_URCORNER   + 	upper right-hand corner
       ACS_LRCORNER   + 	lower right-hand corner
       ACS_RTEE       + 	right tee
       ACS_LTEE       + 	left tee

       ACS_BTEE       + 	bottom tee
       ACS_TTEE       + 	top tee
       ACS_HLINE      - 	horizontal line
       ACS_VLINE      | 	vertical line
       ACS_PLUS       + 	plus
       ACS_S1	      - 	scan line 1
       ACS_S9	      _ 	scan line 9
       ACS_DIAMOND    + 	diamond
       ACS_CKBOARD    : 	checker board (stipple)
       ACS_DEGREE     ' 	degree symbol
       ACS_PLMINUS    # 	plus/minus
       ACS_BULLET     o 	bullet
       ACS_LARROW     < 	arrow pointing left
       ACS_RARROW     > 	arrow pointing right
       ACS_DARROW     v 	arrow pointing down
       ACS_UARROW     ^ 	arrow pointing up
       ACS_BOARD      # 	board of squares
       ACS_LANTERN    # 	lantern symbol
       ACS_BLOCK      # 	solid square block
       -------------------------------------------------

NOTES

       The header file <curses.h> automatically includes the header file <stdio.h>.

       Note that addch, mvaddch, mvwaddch, and echochar may be macros.

RETURN VALUES

       All routines return the integer ERR upon failure and OK upon successful completion.

SEE ALSO

       Functions: curses(3), curs_attr(3), curs_clear(3), curs_inch(3), curs_outopts(3), curs_refresh(3), putc(3)

       Others: standards(5)

																     curs_addch(3)