doc/html/man/curs_add_wch.3x.html

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  34 <TITLE>curs_add_wch 3x</TITLE>
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  39 <H1>curs_add_wch 3x</H1>
  40 <HR>
  41 <PRE>
  42 <!-- Manpage converted by man2html 3.0.1 -->
  43 <STRONG><A HREF="curs_add_wch.3x.html">curs_add_wch(3x)</A></STRONG>                                       <STRONG><A HREF="curs_add_wch.3x.html">curs_add_wch(3x)</A></STRONG>
  44
  45
  46
  47
  48 </PRE>
  49 <H2>NAME</H2><PRE>
  50        <STRONG>add_wch</STRONG>,   <STRONG>wadd_wch</STRONG>,  <STRONG>mvadd_wch</STRONG>,  <STRONG>mvwadd_wch</STRONG>,  <STRONG>echo_wchar</STRONG>,
  51        <STRONG>wecho_wchar</STRONG> - add a complex character and rendition  to  a
  52        <STRONG>curses</STRONG> window, then advance the cursor
  53
  54
  55 </PRE>
  56 <H2>SYNOPSIS</H2><PRE>
  57        <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
  58
  59        <STRONG>int</STRONG> <STRONG>add_wch(</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG>
  60        <STRONG>int</STRONG> <STRONG>wadd_wch(</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG>
  61        <STRONG>int</STRONG> <STRONG>mvadd_wch(</STRONG> <STRONG>int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG>
  62        <STRONG>int</STRONG>  <STRONG>mvwadd_wch(</STRONG>  <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG>
  63        <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG>
  64        <STRONG>int</STRONG> <STRONG>echo_wchar(</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG>
  65        <STRONG>int</STRONG> <STRONG>wecho_wchar(</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG>
  66
  67
  68 </PRE>
  69 <H2>DESCRIPTION</H2><PRE>
  70        The <STRONG>add_wch</STRONG>, <STRONG>wadd_wch</STRONG>, <STRONG>mvadd_wch</STRONG>, and <STRONG>mvwadd_wch</STRONG> functions
  71        put the complex character <EM>wch</EM> into the given window at its
  72        current position, which is then advanced.  These functions
  73        perform  wrapping and special-character processing as fol-
  74        lows:
  75
  76        <STRONG>o</STRONG>   If <EM>wch</EM> refers to a spacing character, then any  previ-
  77            ous  character  at  that  location  is removed.  A new
  78            character specified by <EM>wch</EM> is placed at that  location
  79            with  rendition  specified  by  <EM>wch</EM>.   The cursor then
  80            advances to the next spacing character on the screen.
  81
  82        <STRONG>o</STRONG>   If <EM>wch</EM> refers to a non-spacing character, all previous
  83            characters  at  that location are preserved.  The non-
  84            spacing characters of <EM>wch</EM> are  added  to  the  spacing
  85            complex  character, and the rendition specified by <EM>wch</EM>
  86            is ignored.
  87
  88        <STRONG>o</STRONG>   If the character  part  of  <EM>wch</EM>  is  a  tab,  newline,
  89            backspace  or  other  control character, the window is
  90            updated and the cursor moves as if <STRONG>addch</STRONG> were called.
  91
  92        The <STRONG>echo_wchar</STRONG> function is functionally  equivalent  to  a
  93        call to <STRONG>add_wch</STRONG> followed by a call to <STRONG>refresh</STRONG>.  Similarly,
  94        the <STRONG>wecho_wchar</STRONG> is functionally equivalent to  a  call  to
  95        <STRONG>wadd_wch</STRONG>  followed  by  a call to <STRONG>wrefresh</STRONG>.  The knowledge
  96        that only a single character is being output is taken into
  97        consideration and, for non-control characters, a consider-
  98        able performance gain might be seen by  using  the  *<STRONG>echo</STRONG>*
  99        functions instead of their equivalents.
 100
 101
 102 </PRE>
 103 <H2>RETURN VALUES</H2><PRE>
 104        All routines return the integer <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> on
 105        success.
 106
 107        Functions with a "mv" prefix first perform a cursor  move-
 108        ment  using  <STRONG>wmove</STRONG>, and return an error if the position is
 109        outside the window, or if the window pointer is null.
 110
 111
 112 </PRE>
 113 <H2>NOTES</H2><PRE>
 114        Note that <STRONG>add_wch</STRONG>, <STRONG>mvadd_wch</STRONG>, <STRONG>mvwadd_wch</STRONG>,  and  <STRONG>echo_wchar</STRONG>
 115        may be macros.
 116
 117
 118 </PRE>
 119 <H2>PORTABILITY</H2><PRE>
 120        All  these functions are described in the XSI Curses stan-
 121        dard, Issue 4.  The defaults specified  for  forms-drawing
 122        characters apply in the POSIX locale.
 123
 124        XSI  documents  constants  beginning  with <STRONG>WACS_</STRONG> which are
 125        used for line-drawing.  Those  are  not  currently  imple-
 126        mented in <STRONG>ncurses</STRONG>.
 127
 128
 129 </PRE>
 130 <H2>SEE ALSO</H2><PRE>
 131        <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>, <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG>, <STRONG><A HREF="curs_clear.3x.html">curs_clear(3x)</A></STRONG>,
 132        <STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>, <STRONG><A HREF="putwc.3.html">putwc(3)</A></STRONG>
 133
 134
 135
 136                                                        <STRONG><A HREF="curs_add_wch.3x.html">curs_add_wch(3x)</A></STRONG>
 137 </PRE>
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