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* @Id: curs_instr.3x,v 1.16 2010/12/04 18:38:55 tom Exp @
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<H1>curs_instr 3x</H1>
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<PRE>
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<STRONG><A HREF="curs_instr.3x.html">curs_instr(3x)</A></STRONG> <STRONG><A HREF="curs_instr.3x.html">curs_instr(3x)</A></STRONG>
</PRE>
<H2>NAME</H2><PRE>
<STRONG>instr</STRONG>, <STRONG>innstr</STRONG>, <STRONG>winstr</STRONG>, <STRONG>winnstr</STRONG>, <STRONG>mvinstr</STRONG>, <STRONG>mvinnstr</STRONG>, <STRONG>mvwin-</STRONG>
<STRONG>str</STRONG>, <STRONG>mvwinnstr</STRONG> - get a string of characters from a <STRONG>curses</STRONG>
window
</PRE>
<H2>SYNOPSIS</H2><PRE>
<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
<STRONG>int</STRONG> <STRONG>instr(char</STRONG> <STRONG>*str);</STRONG>
<STRONG>int</STRONG> <STRONG>innstr(char</STRONG> <STRONG>*str,</STRONG> <STRONG>int</STRONG> <STRONG>n);</STRONG>
<STRONG>int</STRONG> <STRONG>winstr(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>char</STRONG> <STRONG>*str);</STRONG>
<STRONG>int</STRONG> <STRONG>winnstr(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>char</STRONG> <STRONG>*str,</STRONG> <STRONG>int</STRONG> <STRONG>n);</STRONG>
<STRONG>int</STRONG> <STRONG>mvinstr(int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>char</STRONG> <STRONG>*str);</STRONG>
<STRONG>int</STRONG> <STRONG>mvinnstr(int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>char</STRONG> <STRONG>*str,</STRONG> <STRONG>int</STRONG> <STRONG>n);</STRONG>
<STRONG>int</STRONG> <STRONG>mvwinstr(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>char</STRONG> <STRONG>*str);</STRONG>
<STRONG>int</STRONG> <STRONG>mvwinnstr(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>char</STRONG> <STRONG>*str,</STRONG> <STRONG>int</STRONG>
<STRONG>n);</STRONG>
</PRE>
<H2>DESCRIPTION</H2><PRE>
These routines return a string of characters in <EM>str</EM>,
extracted starting at the current cursor position in the
named window. Attributes are stripped from the charac-
ters. 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).
</PRE>
<H2>RETURN VALUE</H2><PRE>
All of the functions return <STRONG>ERR</STRONG> upon failure, or the num-
ber of characters actually read into the string.
X/Open defines no error conditions. In this implementa-
tion, if the window parameter is null or the str parameter
is null, a zero is returned.
Functions with a "mv" prefix first perform a cursor move-
ment using <STRONG>wmove</STRONG>, and return an error if the position is
outside the window, or if the window pointer is null.
</PRE>
<H2>NOTES</H2><PRE>
Note that all routines except <STRONG>winnstr</STRONG> may be macros.
</PRE>
<H2>PORTABILITY</H2><PRE>
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 <EM>n</EM>. In this case, the functions
return the string ending at the right margin.
</PRE>
<H2>SEE ALSO</H2><PRE>
<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>.
<STRONG><A HREF="curs_instr.3x.html">curs_instr(3x)</A></STRONG>
</PRE>
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