ncurses 6.0 - patch 20150606
[ncurses.git] / doc / html / man / curs_getcchar.3x.html
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41 <H1 class="no-header">curs_getcchar 3x</H1>
42 <PRE>
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><a name="h2-NAME">NAME</a></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><a name="h2-SYNOPSIS">SYNOPSIS</a></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><a name="h2-DESCRIPTION">DESCRIPTION</a></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><a name="h2-NOTES">NOTES</a></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><a name="h2-RETURN-VALUE">RETURN VALUE</a></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><a name="h2-SEE-ALSO">SEE ALSO</a></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>wcwidth(3)</STRONG>.
147
148
149
150                                                       <STRONG><A HREF="curs_getcchar.3x.html">curs_getcchar(3x)</A></STRONG>
151 </PRE>
152 <div class="nav">
153 <ul>
154 <li><a href="#h2-NAME">NAME</a></li>
155 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
156 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
157 <li><a href="#h2-NOTES">NOTES</a></li>
158 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
159 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
160 </ul>
161 </div>
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