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<H1 class="no-header">curs_inchstr 3x 2025-10-20 ncurses 6.6 Library calls</H1>
<PRE>
<STRONG><A HREF="curs_inchstr.3x.html">curs_inchstr(3x)</A></STRONG> Library calls <STRONG><A HREF="curs_inchstr.3x.html">curs_inchstr(3x)</A></STRONG>
</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
<STRONG>inchstr</STRONG>, <STRONG>inchnstr</STRONG>, <STRONG>winchstr</STRONG>, <STRONG>winchnstr</STRONG>, <STRONG>mvinchstr</STRONG>, <STRONG>mvinchnstr</STRONG>,
<STRONG>mvwinchstr</STRONG>, <STRONG>mvwinchnstr</STRONG> - get a <EM>curses</EM> 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>inchstr(chtype</STRONG> <STRONG>*</STRONG> <EM>chstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>inchnstr(chtype</STRONG> <STRONG>*</STRONG> <EM>chstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>winchstr(WINDOW</STRONG> <STRONG>*</STRONG> <EM>win</EM><STRONG>,</STRONG> <STRONG>chtype</STRONG> <STRONG>*</STRONG> <EM>chstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>winchnstr(WINDOW</STRONG> <STRONG>*</STRONG> <EM>win</EM><STRONG>,</STRONG> <STRONG>chtype</STRONG> <STRONG>*</STRONG> <EM>chstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvinchstr(int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>chtype</STRONG> <STRONG>*</STRONG> <EM>chstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvinchnstr(int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>chtype</STRONG> <STRONG>*</STRONG> <EM>chstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvwinchstr(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>chtype</STRONG> <STRONG>*</STRONG> <EM>chstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvwinchnstr(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>chtype</STRONG> <STRONG>*</STRONG> <EM>chstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
<STRONG>winchstr</STRONG> extracts a <EM>curses</EM> 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>chstr</EM>, terminating it with a null <EM>curses</EM> character. <STRONG>winchnstr</STRONG>
does the same, but copies at most <EM>n</EM> <EM>curses</EM> characters from <EM>win</EM>. A
negative <EM>n</EM> implies no limit; <STRONG>winchnstr</STRONG> then works like <STRONG>winchstr</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>chstr</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>winchnstr</STRONG> may be implemented as macros.
Reading a line that overflows the array pointed to by <EM>chstr</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>chstr</EM>.
</PRE><H2><a name="h2-EXTENSIONS">EXTENSIONS</a></H2><PRE>
<STRONG>inchnstr</STRONG>, <STRONG>winchnstr</STRONG>, <STRONG>mvinchnstr</STRONG>, and <STRONG>mvwinchnstr</STRONG>'s acceptance of
negative <EM>n</EM> values is an <EM>ncurses</EM> extension.
</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
Applications employing <EM>ncurses</EM> extensions should condition their use on
the visibility of the <STRONG>NCURSES_VERSION</STRONG> preprocessor macro.
X/Open Curses Issue 4 describes these functions. It specifies no error
conditions for them. It characterizes the strings stored by these
functions as containing "at most <EM>n</EM> elements" from a window, but does
not specify whether the string stored by these functions is null-
terminated.
SVr4 does not document whether it null-terminates the <EM>curses</EM> character
string it stores in <EM>chstr</EM>, and does not document whether a trailing
null <EM>curses</EM> character counts toward the length limit <EM>n</EM>.
SVr4 describes a successful return value only as "an integer value
other than <EM>ERR</EM>".
</PRE><H2><a name="h2-HISTORY">HISTORY</a></H2><PRE>
SVr3.1 (1987) introduced these functions.
</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
<STRONG><A HREF="curs_in_wchstr.3x.html">curs_in_wchstr(3x)</A></STRONG> describes comparable functions of the <EM>ncurses</EM>
library in its wide-character configuration (<EM>ncursesw</EM>).
<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_inch.3x.html">curs_inch(3x)</A></STRONG>, <STRONG><A HREF="curs_inwstr.3x.html">curs_inwstr(3x)</A></STRONG>
ncurses 6.6 2025-10-20 <STRONG><A HREF="curs_inchstr.3x.html">curs_inchstr(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-EXTENSIONS">EXTENSIONS</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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