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<H1 class="no-header">curs_in_wchstr 3x 2025-10-20 ncurses 6.6 Library calls</H1>
<PRE>
<STRONG><A HREF="curs_in_wchstr.3x.html">curs_in_wchstr(3x)</A></STRONG> Library calls <STRONG><A HREF="curs_in_wchstr.3x.html">curs_in_wchstr(3x)</A></STRONG>
</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
<STRONG>in_wchstr</STRONG>, <STRONG>in_wchnstr</STRONG>, <STRONG>win_wchstr</STRONG>, <STRONG>win_wchnstr</STRONG>, <STRONG>mvin_wchstr</STRONG>,
<STRONG>mvin_wchnstr</STRONG>, <STRONG>mvwin_wchstr</STRONG>, <STRONG>mvwin_wchnstr</STRONG> - get a <EM>curses</EM> complex
character string from a window
</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
<STRONG>int</STRONG> <STRONG>in_wchstr(cchar_t</STRONG> <STRONG>*</STRONG> <EM>wchstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>win_wchstr(WINDOW</STRONG> <STRONG>*</STRONG> <EM>win</EM><STRONG>,</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG> <EM>wchstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvin_wchstr(int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG> <EM>wchstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvwin_wchstr(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>cchar_t</STRONG> <STRONG>*</STRONG> <EM>wchstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>in_wchnstr(cchar_t</STRONG> <STRONG>*</STRONG> <EM>wchstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>win_wchnstr(WINDOW</STRONG> <STRONG>*</STRONG> <EM>win</EM><STRONG>,</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG> <EM>wchstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvin_wchnstr(int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG> <EM>wchstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvwin_wchnstr(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>cchar_t</STRONG> <STRONG>*</STRONG> <EM>wchstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>)</STRONG>
</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
<STRONG>win_wchstr</STRONG> extracts a <EM>curses</EM> complex character string from a <EM>curses</EM>
window <EM>win</EM>, starting at the cursor and stopping at the end of the line,
and stores it in <EM>wchstr</EM>, terminating it with a wide null <EM>curses</EM>
character. <STRONG>win_wchnstr</STRONG> does the same, but copies at most <EM>n</EM> <EM>curses</EM>
complex characters from <EM>win</EM>. A negative <EM>n</EM> implies no limit;
<STRONG>win_wchnstr</STRONG> then works like <STRONG>win_wchstr</STRONG>. <STRONG><A HREF="ncurses.3x.html">ncurses(3x)</A></STRONG> describes the
variants of these functions.
</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
These functions return <STRONG>OK</STRONG> on success and <STRONG>ERR</STRONG> on failure.
In <EM>ncurses</EM>, these functions fail if
<STRONG>o</STRONG> the <EM>curses</EM> screen has not been initialized,
<STRONG>o</STRONG> (for functions taking a <EM>WINDOW</EM> pointer argument) <EM>win</EM> is a null
pointer, or
<STRONG>o</STRONG> <EM>wchstr</EM> is a null pointer.
Functions prefixed with "mv" first perform cursor movement and fail if
the position (<EM>y</EM>, <EM>x</EM>) is outside the window boundaries.
</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
All of these functions except <STRONG>win_wchnstr</STRONG> may be implemented as macros.
Reading a line that overflows the array pointed to by <EM>wchstr</EM> and its
variants causes undefined results. Instead, use the <EM>n</EM>-infixed
functions with a positive <EM>n</EM> argument no larger than the size of the
buffer backing <EM>wchstr</EM>.
</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
X/Open Curses Issue 4 describes these functions. It specifies no error
conditions for them.
</PRE><H2><a name="h2-HISTORY">HISTORY</a></H2><PRE>
X/Open Curses Issue 4 (1995) initially specified these functions. The
System V Interface Definition Version 4 of the same year specified a
function named <EM>winwchstr</EM> (and the usual variants). This was a later
addition to SVr4.<EM>x</EM>, not appearing in the first SVr4 (1989). It
differed from X/Open's later <EM>win</EM><STRONG>_</STRONG><EM>wchstr</EM> in that it took an argument of
type pointer-to-<EM>chtype</EM> instead of pointer-to-<EM>cchar</EM><STRONG>_</STRONG><EM>t</EM>.
</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
<STRONG><A HREF="curs_inchstr.3x.html">curs_inchstr(3x)</A></STRONG> describes comparable functions of the <EM>ncurses</EM> library
in its non-wide-character configuration.
<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_inwstr.3x.html">curs_inwstr(3x)</A></STRONG>, <STRONG><A HREF="curs_in_wch.3x.html">curs_in_wch(3x)</A></STRONG>
ncurses 6.6 2025-10-20 <STRONG><A HREF="curs_in_wchstr.3x.html">curs_in_wchstr(3x)</A></STRONG>
</PRE>
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<ul>
<li><a href="#h2-NAME">NAME</a></li>
<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
<li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
<li><a href="#h2-NOTES">NOTES</a></li>
<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
<li><a href="#h2-HISTORY">HISTORY</a></li>
<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
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