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+<H1 class="no-header">curs_instr 3x 2024-04-20 ncurses 6.4 Library calls</H1>
<PRE>
-<!-- Manpage converted by man2html 3.0.1 -->
+<STRONG><A HREF="curs_instr.3x.html">curs_instr(3x)</A></STRONG> Library calls <STRONG><A HREF="curs_instr.3x.html">curs_instr(3x)</A></STRONG>
-</PRE>
-<H2>NAME</H2><PRE>
- <B>instr</B>, <B>innstr</B>, <B>winstr</B>, <B>winnstr</B>, <B>mvinstr</B>, <B>mvinnstr</B>, <B>mvwin-</B>
- <B>str</B>, <B>mvwinnstr</B> - get a string of characters from a <B>curses</B>
- window
-</PRE>
-<H2>SYNOPSIS</H2><PRE>
- <B>#include</B> <B><curses.h></B>
- <B>int</B> <B>instr(char</B> <B>*str);</B>
- <B>int</B> <B>innstr(char</B> <B>*str,</B> <B>int</B> <B>n);</B>
- <B>int</B> <B>winstr(WINDOW</B> <B>*win,</B> <B>char</B> <B>*str);</B>
- <B>int</B> <B>winnstr(WINDOW</B> <B>*win,</B> <B>char</B> <B>*str,</B> <B>int</B> <B>n);</B>
- <B>int</B> <B>mvinstr(int</B> <B>y,</B> <B>int</B> <B>x,</B> <B>char</B> <B>*str);</B>
- <B>int</B> <B>mvinnstr(int</B> <B>y,</B> <B>int</B> <B>x,</B> <B>char</B> <B>*str,</B> <B>int</B> <B>n);</B>
- <B>int</B> <B>mvwinstr(WINDOW</B> <B>*win,</B> <B>int</B> <B>y,</B> <B>int</B> <B>x,</B> <B>char</B> <B>*str);</B>
- <B>int</B> <B>mvwinnstr(WINDOW</B> <B>*win,</B> <B>int</B> <B>y,</B> <B>int</B> <B>x,</B> <B>char</B> <B>*str,</B> <B>int</B>
- <B>n);</B>
+</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
+ <STRONG>instr</STRONG>, <STRONG>innstr</STRONG>, <STRONG>winstr</STRONG>, <STRONG>winnstr</STRONG>, <STRONG>mvinstr</STRONG>, <STRONG>mvinnstr</STRONG>, <STRONG>mvwinstr</STRONG>, <STRONG>mvwinnstr</STRONG>
+ - get a string from a <EM>curses</EM> window
-</PRE>
-<H2>DESCRIPTION</H2><PRE>
- These routines return a string of characters in <I>str</I>,
- extracted starting at the current cursor position in the
- named window. Attributes are stripped from the charac-
- ters. The four functions with <I>n</I> as the last argument
- return a leading substring at most <I>n</I> characters long
- (exclusive of the trailing NUL).
+</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
+ <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
+ <STRONG>int</STRONG> <STRONG>instr(char</STRONG> <STRONG>*</STRONG><EM>str</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>innstr(char</STRONG> <STRONG>*</STRONG><EM>str</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>winstr(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>str</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>winnstr(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>str</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
-</PRE>
-<H2>RETURN VALUE</H2><PRE>
- All of the functions return <B>ERR</B> upon failure, or the num-
- ber of characters actually read into the string.
+ <STRONG>int</STRONG> <STRONG>mvinstr(int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>str</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>mvinnstr(int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>str</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>mvwinstr(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>char</STRONG> <STRONG>*</STRONG><EM>str</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>mvwinnstr(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>char</STRONG> <STRONG>*</STRONG><EM>str</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
-</PRE>
-<H2>NOTES</H2><PRE>
- Note that all routines except <B>winnstr</B> may be macros.
+</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
+ These routines return a string of characters in <EM>str</EM>, starting at the
+ current cursor position in the named window. Attributes are stripped
+ from the characters.
+ The four functions with <EM>n</EM> as the last argument return a leading
+ substring at most <EM>n</EM> characters long (exclusive of the trailing NUL).
+ Transfer stops at the end of the current line, or when <EM>n</EM> characters
+ have been stored at the location referenced by <EM>str</EM>.
-</PRE>
-<H2>PORTABILITY</H2><PRE>
- The XSI Curses error conditions <B>EILSEQ</B> and <B>EILOVERFLOW</B>
- associated with extended-level conformance are not yet
- detected (this implementation does not yet support XPG4
- multi-byte characters). SVr4 does not document whether a
- length limit includes or excludes the trailing NUL.
- The ncurses library extends the XSI description by allow-
- ing a negative value for <I>n</I>. In this case, the functions
- return the string ending at the right margin.
+</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
+ All of the functions return <STRONG>ERR</STRONG> upon failure, or the number of
+ characters actually read into the string.
+ X/Open Curses defines no error conditions. This implementation returns
+ an error
+
+ <STRONG>o</STRONG> if the <EM>win</EM> parameter is null or
+
+ <STRONG>o</STRONG> if the <EM>chstr</EM> parameter is null.
+
+ 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 routines except <STRONG>winnstr</STRONG> may be macros.
+
+ Reading a line that overflows the array pointed to by <EM>str</EM> with <STRONG>instr</STRONG>,
+ <STRONG>mvinstr</STRONG>, <STRONG>mvwinstr</STRONG> or <STRONG>winstr</STRONG> causes undefined results. Therefore, the
+ use of <STRONG>innstr</STRONG>, <STRONG>mvinnstr</STRONG>, <STRONG>mvwinnstr</STRONG>, or <STRONG>winnstr</STRONG> is recommended.
-</PRE>
-<H2>SEE ALSO</H2><PRE>
- <B><A HREF="ncurses.3x.html">curses(3x)</A></B>.
+</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
+ SVr4 does not document whether a length limit includes or excludes the
+ trailing NUL.
+ The <EM>ncurses</EM> library extends the X/Open Curses description by allowing a
+ negative value for <EM>n</EM>. In this case, the functions return the string
+ ending at the right margin.
+</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
+ <STRONG><A HREF="curs_ins_wstr.3x.html">curs_ins_wstr(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_inchstr.3x.html">curs_inchstr(3x)</A></STRONG>
+ncurses 6.4 2024-04-20 <STRONG><A HREF="curs_instr.3x.html">curs_instr(3x)</A></STRONG>
</PRE>
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+<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-SEE-ALSO">SEE ALSO</a></li>
+</ul>
+</div>
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