ncurses 6.0 - patch 20170429
[ncurses.git] / doc / html / man / curs_instr.3x.html
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41 <H1 class="no-header">curs_instr 3x</H1>
42 <PRE>
43 <STRONG><A HREF="curs_instr.3x.html">curs_instr(3x)</A></STRONG>                                           <STRONG><A HREF="curs_instr.3x.html">curs_instr(3x)</A></STRONG>
44
45
46
47
48 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
49        <STRONG>instr</STRONG>,  <STRONG>innstr</STRONG>, <STRONG>winstr</STRONG>, <STRONG>winnstr</STRONG>, <STRONG>mvinstr</STRONG>, <STRONG>mvinnstr</STRONG>, <STRONG>mvwin-</STRONG>
50        <STRONG>str</STRONG>, <STRONG>mvwinnstr</STRONG> - get a string of characters from a  <STRONG>curses</STRONG>
51        window
52
53
54 </PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
55        <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
56
57        <STRONG>int</STRONG> <STRONG>instr(char</STRONG> <STRONG>*str);</STRONG>
58        <STRONG>int</STRONG> <STRONG>innstr(char</STRONG> <STRONG>*str,</STRONG> <STRONG>int</STRONG> <STRONG>n);</STRONG>
59        <STRONG>int</STRONG> <STRONG>winstr(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>char</STRONG> <STRONG>*str);</STRONG>
60        <STRONG>int</STRONG> <STRONG>winnstr(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>char</STRONG> <STRONG>*str,</STRONG> <STRONG>int</STRONG> <STRONG>n);</STRONG>
61        <STRONG>int</STRONG> <STRONG>mvinstr(int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>char</STRONG> <STRONG>*str);</STRONG>
62        <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>
63        <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>
64        <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>
65        <STRONG>n);</STRONG>
66
67
68 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
69        These routines return  a  string  of  characters  in  <EM>str</EM>,
70        extracted  starting  at the current cursor position in the
71        named window.  Attributes are stripped  from  the  charac-
72        ters.   The  four  functions  with  <EM>n</EM> as the last argument
73        return a leading  substring  at  most  <EM>n</EM>  characters  long
74        (exclusive of the trailing NUL).
75
76
77 </PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
78        All  of the functions return <STRONG>ERR</STRONG> upon failure, or the num-
79        ber of characters actually read into the string.
80
81        X/Open Curses defines no error conditions.  In this imple-
82        mentation:
83
84        <STRONG>o</STRONG>   If the <EM>win</EM> parameter is null, an error is returned,
85
86        <STRONG>o</STRONG>   If the <EM>chstr</EM> parameter is null, an error is returned,
87
88        Functions  with a "mv" prefix first perform a cursor move-
89        ment using <STRONG>wmove</STRONG>, and return an error if the  position  is
90        outside the window, or if the window pointer is null.
91
92
93 </PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
94        Note that all routines except <STRONG>winnstr</STRONG> may be macros.
95
96
97 </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
98        SVr4  does not document whether a length limit includes or
99        excludes the trailing NUL.
100
101        The ncurses library extends the XSI description by  allow-
102        ing  a  negative value for <EM>n</EM>.  In this case, the functions
103        return the string ending at the right margin.
104
105
106 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
107        <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>.
108
109
110
111                                                          <STRONG><A HREF="curs_instr.3x.html">curs_instr(3x)</A></STRONG>
112 </PRE>
113 <div class="nav">
114 <ul>
115 <li><a href="#h2-NAME">NAME</a></li>
116 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
117 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
118 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
119 <li><a href="#h2-NOTES">NOTES</a></li>
120 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
121 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
122 </ul>
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