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<H1 class="no-header">curs_add_wchstr 3x 2025-10-20 ncurses 6.6 Library calls</H1>
<PRE>
<STRONG><A HREF="curs_add_wchstr.3x.html">curs_add_wchstr(3x)</A></STRONG> Library calls <STRONG><A HREF="curs_add_wchstr.3x.html">curs_add_wchstr(3x)</A></STRONG>
</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
<STRONG>add_wchstr</STRONG>, <STRONG>wadd_wchstr</STRONG>, <STRONG>mvadd_wchstr</STRONG>, <STRONG>mvwadd_wchstr</STRONG>, <STRONG>add_wchnstr</STRONG>,
<STRONG>wadd_wchnstr</STRONG>, <STRONG>mvadd_wchnstr</STRONG>, <STRONG>mvwadd_wchnstr</STRONG> - add a <EM>curses</EM> complex
character string to a window
</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
<STRONG>int</STRONG> <STRONG>add_wchstr(const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG> <EM>wchstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>wadd_wchstr(WINDOW</STRONG> <STRONG>*</STRONG> <EM>win</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG> <EM>wchstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvadd_wchstr(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>wchstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvwadd_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>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG> <EM>wchstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>add_wchnstr(const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG> <EM>wchstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>wadd_wchnstr(WINDOW</STRONG> <STRONG>*</STRONG> <EM>win</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG> <EM>wchstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvadd_wchnstr(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>wchstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvwadd_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>const</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>wadd_wchstr</STRONG> copies the string of complex characters <EM>wchstr</EM> to the
window <EM>win</EM>. A null complex character terminates the string. If a
complex character does not completely fit at the end of the line,
<EM>curses</EM> fills its remaining cells with the window's background
character; see <STRONG><A HREF="curs_bkgrnd.3x.html">bkgrnd(3x)</A></STRONG>. <STRONG>wadd_wchnstr</STRONG> does the same, but copies at
most <EM>n</EM> characters, or as many as possible if <EM>n</EM> is <STRONG>-1</STRONG>. <STRONG><A HREF="ncurses.3x.html">ncurses(3x)</A></STRONG>
describes the variants of these functions.
Because these functions do not call <STRONG><A HREF="curs_add_wch.3x.html">wadd_wch(3x)</A></STRONG> internally, they are
faster than <STRONG><A HREF="curs_addwstr.3x.html">waddwstr(3x)</A></STRONG> and <STRONG><A HREF="curs_addwstr.3x.html">waddnwstr(3x)</A></STRONG>. On the other hand, they
<STRONG>o</STRONG> do not treat the backspace, carriage return, or line feed
characters specially;
<STRONG>o</STRONG> do not represent unprintable characters with <STRONG><A HREF="curs_util.3x.html">wunctrl(3x)</A></STRONG>;
<STRONG>o</STRONG> do not update the cursor position to follow the last character
written; and
<STRONG>o</STRONG> truncate the string at the window's right margin, rather than
wrapping it to the next line and potentially scrolling.
</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> <EM>wchstr</EM> is a null pointer, or
<STRONG>o</STRONG> (for functions taking a <EM>WINDOW</EM> pointer argument) <EM>win</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>wadd_wchnstr</STRONG> may be implemented as
macros.
</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
functions named <EM>waddwchstr</EM> and <EM>waddwchnstr</EM> (and the usual variants).
These were later additions to SVr4.<EM>x</EM>, not appearing in the first SVr4
(1989). They differed from X/Open's later <EM>wadd</EM><STRONG>_</STRONG><EM>wchstr</EM> and <EM>wadd</EM><STRONG>_</STRONG><EM>wchnstr</EM>
in that they each took an argument of type <EM>wchar</EM><STRONG>_</STRONG><EM>t</EM> instead of <EM>cchar</EM><STRONG>_</STRONG><EM>t</EM>.
</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
<STRONG><A HREF="curs_addchstr.3x.html">curs_addchstr(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_addwstr.3x.html">curs_addwstr(3x)</A></STRONG>, <STRONG><A HREF="curs_add_wch.3x.html">curs_add_wch(3x)</A></STRONG>
ncurses 6.6 2025-10-20 <STRONG><A HREF="curs_add_wchstr.3x.html">curs_add_wchstr(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></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>
</ul>
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