release/src/router/libncurses/doc/html/man/curs_getcchar.3x.html

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  30   * @Id: curs_getcchar.3x,v 1.15 2010/12/04 18:36:44 tom Exp @
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  39 <H1>curs_getcchar 3x</H1>
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  41 <PRE>
  42 <!-- Manpage converted by man2html 3.0.1 -->
  43 <STRONG><A HREF="curs_getcchar.3x.html">curs_getcchar(3x)</A></STRONG>                                     <STRONG><A HREF="curs_getcchar.3x.html">curs_getcchar(3x)</A></STRONG>
  44
  45
  46
  47
  48 </PRE>
  49 <H2>NAME</H2><PRE>
  50        <STRONG>getcchar</STRONG>,  <STRONG>setcchar</STRONG> - Get a wide character string and ren-
  51        dition from a <STRONG>cchar_t</STRONG> or set a <STRONG>cchar_t</STRONG> from a wide-charac-
  52        ter string
  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>getcchar(</STRONG>
  60                <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wcval</EM><STRONG>,</STRONG>
  61                <STRONG>wchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM><STRONG>,</STRONG>
  62                <STRONG>attr_t</STRONG> <STRONG>*</STRONG><EM>attrs</EM><STRONG>,</STRONG>
  63                <STRONG>short</STRONG> <STRONG>*</STRONG><EM>color</EM><STRONG>_</STRONG><EM>pair</EM><STRONG>,</STRONG>
  64                <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM> <STRONG>);</STRONG>
  65
  66        <STRONG>int</STRONG> <STRONG>setcchar(</STRONG>
  67                <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wcval</EM><STRONG>,</STRONG>
  68                <STRONG>const</STRONG> <STRONG>wchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM><STRONG>,</STRONG>
  69                <STRONG>const</STRONG> <STRONG>attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG>
  70                <STRONG>short</STRONG> <EM>color</EM><STRONG>_</STRONG><EM>pair</EM><STRONG>,</STRONG>
  71                <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM> <STRONG>);</STRONG>
  72
  73
  74 </PRE>
  75 <H2>DESCRIPTION</H2><PRE>
  76        The  <STRONG>getcchar</STRONG>  function  gets  a wide-character string and
  77        rendition from a <STRONG>cchar_t</STRONG> argument.  When <EM>wch</EM> is not a null
  78        pointer, the <STRONG>getcchar</STRONG> function does the following:
  79
  80        <STRONG>o</STRONG>   Extracts information from a <STRONG>cchar_t</STRONG> value <EM>wcval</EM>
  81
  82        <STRONG>o</STRONG>   Stores   the  character  attributes  in  the  location
  83            pointed to by <EM>attrs</EM>
  84
  85        <STRONG>o</STRONG>   Stores the color-pair in the location  pointed  to  by
  86            <EM>color</EM><STRONG>_</STRONG><EM>pair</EM>
  87
  88        <STRONG>o</STRONG>   Stores  the  wide-character  string, characters refer-
  89            enced by <EM>wcval</EM>, into the array pointed to by <EM>wch</EM>.
  90
  91        When <EM>wch</EM> is a null pointer, the <STRONG>getcchar</STRONG> function does the
  92        following:
  93
  94        <STRONG>o</STRONG>   Obtains  the  number  of wide characters pointed to by
  95            <EM>wcval</EM>
  96
  97        <STRONG>o</STRONG>   Does not  change  the  data  referenced  by  <EM>attrs</EM>  or
  98            <EM>color</EM><STRONG>_</STRONG><EM>pair</EM>
  99
 100        The  <STRONG>setcchar</STRONG> function initializes the location pointed to
 101        by <EM>wcval</EM> by using:
 102
 103        <STRONG>o</STRONG>   The character attributes in <EM>attrs</EM>
 104
 105        <STRONG>o</STRONG>   The color pair in <EM>color</EM><STRONG>_</STRONG><EM>pair</EM>
 106
 107        <STRONG>o</STRONG>   The wide-character string  pointed  to  by  <EM>wch</EM>.   The
 108            string  must  be L'\0' terminated, contain at most one
 109            spacing character, which must be the first.
 110
 111            Up to <STRONG>CCHARW_MAX</STRONG>-1 nonspacing characters  may  follow.
 112            Additional nonspacing characters are ignored.
 113
 114            The  string  may  contain  a  single control character
 115            instead.  In that case, no nonspacing  characters  are
 116            allowed.
 117
 118
 119 </PRE>
 120 <H2>NOTES</H2><PRE>
 121        The  <EM>opts</EM> argument is reserved for future use.  Currently,
 122        an application must provide a null pointer as <EM>opts</EM>.
 123
 124        The <EM>wcval</EM> argument may be a value generated by a  call  to
 125        <STRONG>setcchar</STRONG>  or by a function that has a <STRONG>cchar_t</STRONG> output argu-
 126        ment.  If <EM>wcval</EM> is constructed by  any  other  means,  the
 127        effect is unspecified.
 128
 129
 130 </PRE>
 131 <H2>RETURN VALUES</H2><PRE>
 132        When <EM>wch</EM> is a null pointer, <STRONG>getcchar</STRONG> returns the number of
 133        wide characters referenced by <EM>wcval</EM>, including one  for  a
 134        trailing null.
 135
 136        When  <EM>wch</EM>  is not a null pointer, <STRONG>getcchar</STRONG> returns <STRONG>OK</STRONG> upon
 137        successful completion, and <STRONG>ERR</STRONG> otherwise.
 138
 139        Upon successful completion, <STRONG>setcchar</STRONG> returns  <STRONG>OK</STRONG>.   Other-
 140        wise, it returns <STRONG>ERR</STRONG>.
 141
 142
 143 </PRE>
 144 <H2>SEE ALSO</H2><PRE>
 145        Functions:   <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG>,   <STRONG><A HREF="curs_color.3x.html">curs_color(3x)</A></STRONG>,  <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>,
 146        <STRONG><A HREF="wcwidth.3.html">wcwidth(3)</A></STRONG>.
 147
 148
 149
 150                                                       <STRONG><A HREF="curs_getcchar.3x.html">curs_getcchar(3x)</A></STRONG>
 151 </PRE>
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