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* @Id: curs_getcchar.3x,v 1.17 2015/07/21 09:30:38 tom Exp @
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<H1 class="no-header">curs_getcchar 3x</H1>
<PRE>
<STRONG><A HREF="curs_getcchar.3x.html">curs_getcchar(3x)</A></STRONG> <STRONG><A HREF="curs_getcchar.3x.html">curs_getcchar(3x)</A></STRONG>
</PRE>
<H2><a name="h2-NAME">NAME</a></H2><PRE>
<STRONG>getcchar</STRONG>, <STRONG>setcchar</STRONG> - Get a wide character string and ren-
dition from a <STRONG>cchar_t</STRONG> or set a <STRONG>cchar_t</STRONG> from a wide-charac-
ter string
</PRE>
<H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
<STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
<STRONG>int</STRONG> <STRONG>getcchar(</STRONG>
<STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wcval</EM><STRONG>,</STRONG>
<STRONG>wchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM><STRONG>,</STRONG>
<STRONG>attr_t</STRONG> <STRONG>*</STRONG><EM>attrs</EM><STRONG>,</STRONG>
<STRONG>short</STRONG> <STRONG>*</STRONG><EM>color</EM><STRONG>_</STRONG><EM>pair</EM><STRONG>,</STRONG>
<STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM> <STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>setcchar(</STRONG>
<STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wcval</EM><STRONG>,</STRONG>
<STRONG>const</STRONG> <STRONG>wchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM><STRONG>,</STRONG>
<STRONG>const</STRONG> <STRONG>attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG>
<STRONG>short</STRONG> <EM>color</EM><STRONG>_</STRONG><EM>pair</EM><STRONG>,</STRONG>
<STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM> <STRONG>);</STRONG>
</PRE>
<H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
</PRE>
<H3><a name="h3-getcchar">getcchar</a></H3><PRE>
The <STRONG>getcchar</STRONG> function gets a wide-character string and
rendition from a <STRONG>cchar_t</STRONG> argument. When <EM>wch</EM> is not a null
pointer, the <STRONG>getcchar</STRONG> function does the following:
<STRONG>o</STRONG> Extracts information from a <STRONG>cchar_t</STRONG> value <EM>wcval</EM>
<STRONG>o</STRONG> Stores the character attributes in the location
pointed to by <EM>attrs</EM>
<STRONG>o</STRONG> Stores the color-pair in the location pointed to by
<EM>color</EM><STRONG>_</STRONG><EM>pair</EM>
<STRONG>o</STRONG> Stores the wide-character string, characters refer-
enced by <EM>wcval</EM>, into the array pointed to by <EM>wch</EM>.
When <EM>wch</EM> is a null pointer, the <STRONG>getcchar</STRONG> function does the
following:
<STRONG>o</STRONG> Obtains the number of wide characters pointed to by
<EM>wcval</EM>
<STRONG>o</STRONG> Does not change the data referenced by <EM>attrs</EM> or
<EM>color</EM><STRONG>_</STRONG><EM>pair</EM>
</PRE>
<H3><a name="h3-setcchar">setcchar</a></H3><PRE>
The <STRONG>setcchar</STRONG> function initializes the location pointed to
by <EM>wcval</EM> by using:
<STRONG>o</STRONG> The character attributes in <EM>attrs</EM>
<STRONG>o</STRONG> The color pair in <EM>color</EM><STRONG>_</STRONG><EM>pair</EM>
<STRONG>o</STRONG> The wide-character string pointed to by <EM>wch</EM>. The
string must be L'\0' terminated, contain at most one
spacing character, which must be the first.
Up to <STRONG>CCHARW_MAX</STRONG>-1 nonspacing characters may follow.
Additional nonspacing characters are ignored.
The string may contain a single control character
instead. In that case, no nonspacing characters are
allowed.
</PRE>
<H2><a name="h2-NOTES">NOTES</a></H2><PRE>
The <EM>opts</EM> argument is reserved for future use. Currently,
an application must provide a null pointer as <EM>opts</EM>.
The <EM>wcval</EM> argument may be a value generated by a call to
<STRONG>setcchar</STRONG> or by a function that has a <STRONG>cchar_t</STRONG> output argu-
ment. If <EM>wcval</EM> is constructed by any other means, the
effect is unspecified.
</PRE>
<H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
When <EM>wch</EM> is a null pointer, <STRONG>getcchar</STRONG> returns the number of
wide characters referenced by <EM>wcval</EM>, including one for a
trailing null.
When <EM>wch</EM> is not a null pointer, <STRONG>getcchar</STRONG> returns <STRONG>OK</STRONG> upon
successful completion, and <STRONG>ERR</STRONG> otherwise.
Upon successful completion, <STRONG>setcchar</STRONG> returns <STRONG>OK</STRONG>. Other-
wise, it returns <STRONG>ERR</STRONG>.
</PRE>
<H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
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>,
<STRONG>wcwidth(3)</STRONG>.
<STRONG><A HREF="curs_getcchar.3x.html">curs_getcchar(3x)</A></STRONG>
</PRE>
<div class="nav">
<ul>
<li><a href="#h2-NAME">NAME</a></li>
<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
<li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
<ul>
<li><a href="#h3-getcchar">getcchar</a></li>
<li><a href="#h3-setcchar">setcchar</a></li>
</ul>
</li>
<li><a href="#h2-NOTES">NOTES</a></li>
<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
</ul>
</div>
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