ncursesw-morphos/man/curs_instr.3x
Thomas E. Dickey 96d6b16de0 ncurses 5.7 - patch 20101204
+ add special case to _nc_infotocap() to recognize the setaf/setab
  strings from xterm+256color and xterm+88color, and provide a reduced
  version which works with termcap.
+ remove obsolete emacs "Local Variables" section from documentation
  (request by Sven Joachim).
+ update doc/html/index.html to include NCURSES-Programming-HOWTO.html
  (report by Sven Joachim).
2010-12-04 21:15:53 +00:00

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.\"***************************************************************************
.\" Copyright (c) 1998-2006,2010 Free Software Foundation, Inc. *
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.\" furnished to do so, subject to the following conditions: *
.\" *
.\" The above copyright notice and this permission notice shall be included *
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.\"
.\" $Id: curs_instr.3x,v 1.16 2010/12/04 18:38:55 tom Exp $
.TH curs_instr 3X ""
.SH NAME
\fBinstr\fR,
\fBinnstr\fR,
\fBwinstr\fR,
\fBwinnstr\fR,
\fBmvinstr\fR,
\fBmvinnstr\fR,
\fBmvwinstr\fR,
\fBmvwinnstr\fR \- get a string of characters from a \fBcurses\fR window
.SH SYNOPSIS
\fB#include <curses.h>\fR
.sp
\fBint instr(char *str);\fR
.br
\fBint innstr(char *str, int n);\fR
.br
\fBint winstr(WINDOW *win, char *str);\fR
.br
\fBint winnstr(WINDOW *win, char *str, int n);\fR
.br
\fBint mvinstr(int y, int x, char *str);\fR
.br
\fBint mvinnstr(int y, int x, char *str, int n);\fR
.br
\fBint mvwinstr(WINDOW *win, int y, int x, char *str);\fR
.br
\fBint mvwinnstr(WINDOW *win, int y, int x, char *str, int n);\fR
.br
.SH DESCRIPTION
These routines return a string of characters in \fIstr\fR, extracted starting
at the current cursor position in the named window.
Attributes are stripped from the characters. The four
functions with \fIn\fR as the last argument return a leading substring at most
\fIn\fR characters long (exclusive of the trailing NUL).
.SH RETURN VALUE
All of the functions return \fBERR\fR upon failure,
or the number of characters actually read into the string.
.PP
X/Open defines no error conditions.
In this implementation,
if the window parameter is null or the str parameter is null,
a zero is returned.
.PP
Functions with a "mv" prefix first perform a cursor movement using
\fBwmove\fP, and return an error if the position is outside the window,
or if the window pointer is null.
.SH NOTES
Note that all routines except \fBwinnstr\fR may be macros.
.SH PORTABILITY
SVr4 does not
document whether a length limit includes or excludes the trailing NUL.
.PP
The ncurses library extends the XSI description by allowing a negative
value for \fIn\fR.
In this case, the functions return the string ending at the right margin.
.SH SEE ALSO
\fBcurses\fR(3X).