add_wch man page on Archlinux

Printed from http://www.polarhome.com/service/man/?qf=add_wch&af=0&tf=2&of=Archlinux

curs_add_wch(3X)					      curs_add_wch(3X)

NAME
       add_wch, wadd_wch, mvadd_wch, mvwadd_wch, echo_wchar, wecho_wchar - add
       a complex character and rendition to a curses window, then advance  the
       cursor

SYNOPSIS
       #include <curses.h>

       int add_wch( const cchar_t *wch );
       int wadd_wch( WINDOW *win, const cchar_t *wch );
       int mvadd_wch( int y, int x, const cchar_t *wch );
       int mvwadd_wch( WINDOW *win, int y, int x, const cchar_t *wch );
       int echo_wchar( const cchar_t *wch );
       int wecho_wchar( WINDOW *win, const cchar_t *wch );

DESCRIPTION
       The add_wch, wadd_wch, mvadd_wch, and mvwadd_wch functions put the com‐
       plex character wch into the given window at its current position, which
       is then advanced.  These functions perform wrapping and special-charac‐
       ter processing as follows:

       ·   If wch refers to a spacing character, then any  previous  character
	   at  that  location is removed.  A new character specified by wch is
	   placed at that location with rendition specified by wch.  The  cur‐
	   sor then advances to the next spacing character on the screen.

       ·   If  wch  refers to a non-spacing character, all previous characters
	   at that location are preserved.  The non-spacing characters of  wch
	   are added to the spacing complex character, and the rendition spec‐
	   ified by wch is ignored.

       ·   If the character part of wch is a tab, newline, backspace or	 other
	   control character, the window is updated and the cursor moves as if
	   addch were called.

       The echo_wchar function is functionally equivalent to a call to add_wch
       followed by a call to refresh.  Similarly, the wecho_wchar is function‐
       ally equivalent to a call to wadd_wch followed 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 per‐
       formance	 gain  might  be seen by using the *echo* functions instead of
       their equivalents.

   Line Graphics
       Like addch(3X), addch_wch accepts symbols which make it simple to  draw
       lines and other frequently used special characters.  These symbols cor‐
       respond to the same VT100 line-drawing set as addch(3X).

       Name		 Unicode    Default   Description
       ────────────────────────────────────────────────────────────────
       WACS_BLOCK	 0x25ae	    #	      solid square block
       WACS_BOARD	 0x2592	    #	      board of squares
       WACS_BTEE	 0x2534	    +	      bottom tee
       WACS_BULLET	 0x00b7	    o	      bullet
       WACS_CKBOARD	 0x2592	    :	      checker board (stipple)
       WACS_DARROW	 0x2193	    v	      arrow pointing down
       WACS_DEGREE	 0x00b0	    '	      degree symbol
       WACS_DIAMOND	 0x25c6	    +	      diamond
       WACS_GEQUAL	 0x2265	    >	      greater-than-or-equal-to
       WACS_HLINE	 0x2500	    -	      horizontal line
       WACS_LANTERN	 0x2603	    #	      lantern symbol

       WACS_LARROW	 0x2190	    <	      arrow pointing left
       WACS_LEQUAL	 0x2264	    <	      less-than-or-equal-to
       WACS_LLCORNER	 0x2514	    +	      lower left-hand corner
       WACS_LRCORNER	 0x2518	    +	      lower right-hand corner
       WACS_LTEE	 0x2524	    +	      left tee
       WACS_NEQUAL	 0x2260	    !	      not-equal
       WACS_PI		 0x03c0	    *	      greek pi
       WACS_PLMINUS	 0x00b1	    #	      plus/minus
       WACS_PLUS	 0x253c	    +	      plus
       WACS_RARROW	 0x2192	    >	      arrow pointing right
       WACS_RTEE	 0x251c	    +	      right tee
       WACS_S1		 0x23ba	    -	      scan line 1
       WACS_S3		 0x23bb	    -	      scan line 3
       WACS_S7		 0x23bc	    -	      scan line 7
       WACS_S9		 0x23bd	    _	      scan line 9
       WACS_STERLING	 0x00a3	    f	      pound-sterling symbol
       WACS_TTEE	 0x252c	    +	      top tee
       WACS_UARROW	 0x2191	    ^	      arrow pointing up
       WACS_ULCORNER	 0x250c	    +	      upper left-hand corner
       WACS_URCORNER	 0x2510	    +	      upper right-hand corner
       WACS_VLINE	 0x2502	    |	      vertical line

       The wide-character configuration of ncurses also	 defines  symbols  for
       thick- and double-lines:

       Name		 Unicode   Default   Description
       ─────────────────────────────────────────────────────────────────────
       WACS_T_ULCORNER	 0x250f	   +	     thick upper left corner
       WACS_T_LLCORNER	 0x2517	   +	     thick lower left corner
       WACS_T_URCORNER	 0x2513	   +	     thick upper right corner
       WACS_T_LRCORNER	 0x251b	   +	     thick lower right corner
       WACS_T_LTEE	 0x252b	   +	     thick tee pointing right
       WACS_T_RTEE	 0x2523	   +	     thick tee pointing left
       WACS_T_BTEE	 0x253b	   +	     thick tee pointing up
       WACS_T_TTEE	 0x2533	   +	     thick tee pointing down
       WACS_T_HLINE	 0x2501	   -	     thick horizontal line
       WACS_T_VLINE	 0x2503	   |	     thick vertical line
       WACS_T_PLUS	 0x254b	   +	     thick large plus or crossover
       WACS_D_ULCORNER	 0x2554	   +	     double upper left corner
       WACS_D_LLCORNER	 0x255a	   +	     double lower left corner
       WACS_D_URCORNER	 0x2557	   +	     double upper right corner
       WACS_D_LRCORNER	 0x255d	   +	     double lower right corner
       WACS_D_RTEE	 0x2563	   +	     double tee pointing left
       WACS_D_LTEE	 0x2560	   +	     double tee pointing right
       WACS_D_BTEE	 0x2569	   +	     double tee pointing up
       WACS_D_TTEE	 0x2566	   +	     double tee pointing down
       WACS_D_HLINE	 0x2550	   -	     double horizontal line
       WACS_D_VLINE	 0x2551	   |	     double vertical line
       WACS_D_PLUS	 0x256c	   +	     double large plus or crossover

RETURN VALUES
       All routines return the integer ERR upon failure and OK on success.

       Functions  with	a  "mv"	 prefix	 first perform a cursor movement using
       wmove, and return an error if the position is outside the window, or if
       the window pointer is null.

NOTES
       Note that add_wch, mvadd_wch, mvwadd_wch, and echo_wchar may be macros.

PORTABILITY
       All  of these functions are described in the XSI Curses standard, Issue
       4.  The defaults specified for line-drawing  characters	apply  in  the
       POSIX locale.

       X/Open  Curses  makes it clear that the WACS_ symbols should be defined
       as a pointer to cchar_t data, e.g., in the discussion of border_set.  A
       few implementations are problematic:

       ·   NetBSD curses defines the symbols as a wchar_t within a cchar_t.

       ·   HPUX curses equates some of the ACS_ symbols to the analogous WACS_
	   symbols as if the ACS_ symbols were wide  characters.   The	misde‐
	   fined  symbols  are the arrows and other symbols which are not used
	   for line-drawing.

       X/Open Curses does not define symbols for thick- or double-lines.  SVr4
       curses  implementations	defined their line-drawing symbols in terms of
       intermediate symbols.  This implementation extends those symbols,  pro‐
       viding new definitions which are not in the SVr4 implementations.

SEE ALSO
       curses(3X),  curs_addch(3X),  curs_attr(3X),  curs_clear(3X), curs_out‐
       opts(3X), curs_refresh(3X), putwc(3)

							      curs_add_wch(3X)
[top]

List of man pages available for Archlinux

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net