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29 * @Id: curs_getstr.3x,v 1.19 2010/12/04 18:36:44 tom Exp @
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41 <H1 class="no-header">curs_getstr 3x</H1>
43 <STRONG><A HREF="curs_getstr.3x.html">curs_getstr(3x)</A></STRONG> <STRONG><A HREF="curs_getstr.3x.html">curs_getstr(3x)</A></STRONG>
48 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
49 <STRONG>getstr</STRONG>, <STRONG>getnstr</STRONG>, <STRONG>wgetstr</STRONG>, <STRONG>wgetnstr</STRONG>, <STRONG>mvgetstr</STRONG>, <STRONG>mvgetnstr</STRONG>,
50 <STRONG>mvwgetstr</STRONG>, <STRONG>mvwgetnstr</STRONG> - accept character strings from
51 <STRONG>curses</STRONG> terminal keyboard
54 </PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
55 <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
57 <STRONG>int</STRONG> <STRONG>getstr(char</STRONG> <STRONG>*str);</STRONG>
58 <STRONG>int</STRONG> <STRONG>getnstr(char</STRONG> <STRONG>*str,</STRONG> <STRONG>int</STRONG> <STRONG>n);</STRONG>
59 <STRONG>int</STRONG> <STRONG>wgetstr(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>char</STRONG> <STRONG>*str);</STRONG>
60 <STRONG>int</STRONG> <STRONG>wgetnstr(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>char</STRONG> <STRONG>*str,</STRONG> <STRONG>int</STRONG> <STRONG>n);</STRONG>
61 <STRONG>int</STRONG> <STRONG>mvgetstr(int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>char</STRONG> <STRONG>*str);</STRONG>
62 <STRONG>int</STRONG> <STRONG>mvwgetstr(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>char</STRONG> <STRONG>*str);</STRONG>
63 <STRONG>int</STRONG> <STRONG>mvgetnstr(int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>char</STRONG> <STRONG>*str,</STRONG> <STRONG>int</STRONG> <STRONG>n);</STRONG>
64 <STRONG>int</STRONG> <STRONG>mvwgetnstr(WINDOW</STRONG> <STRONG>*,</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>
67 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
68 The function <STRONG>getstr</STRONG> is equivalent to a series of calls to
69 <STRONG>getch</STRONG>, until a newline or carriage return is received (the
70 terminating character is not included in the returned
71 string). The resulting value is placed in the area point-
72 ed to by the character pointer <EM>str</EM>.
74 <STRONG>wgetnstr</STRONG> reads at most <EM>n</EM> characters, thus preventing a
75 possible overflow of the input buffer. Any attempt to en-
76 ter more characters (other than the terminating newline or
77 carriage return) causes a beep. Function keys also cause
78 a beep and are ignored. The <STRONG>getnstr</STRONG> function reads from
79 the <EM>stdscr</EM> default window.
81 The user's erase and kill characters are interpreted. If
82 keypad mode is on for the window, <STRONG>KEY_LEFT</STRONG> and
83 <STRONG>KEY_BACKSPACE</STRONG> are both considered equivalent to the user's
86 Characters input are echoed only if <STRONG>echo</STRONG> is currently on.
87 In that case, backspace is echoed as deletion of the pre-
88 vious character (typically a left motion).
91 </PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
92 All routines return the integer <STRONG>ERR</STRONG> upon failure and an <STRONG>OK</STRONG>
93 (SVr4 specifies only "an integer value other than <STRONG>ERR</STRONG>")
94 upon successful completion.
96 X/Open defines no error conditions.
98 In this implementation, these functions return an error if
99 the window pointer is null, or if its timeout expires
100 without having any data.
102 This implementation provides an extension as well. If a
103 SIGWINCH interrupts the function, it will return <STRONG>KEY_RE-</STRONG>
104 <STRONG>SIZE</STRONG> rather than <STRONG>OK</STRONG> or <STRONG>ERR</STRONG>.
106 Functions with a "mv" prefix first perform a cursor move-
107 ment using <STRONG>wmove</STRONG>, and return an error if the position is
108 outside the window, or if the window pointer is null.
111 </PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
112 Note that <STRONG>getstr</STRONG>, <STRONG>mvgetstr</STRONG>, and <STRONG>mvwgetstr</STRONG> may be macros.
115 </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
116 These functions are described in the XSI Curses standard,
117 Issue 4. They read single-byte characters only. The
118 standard does not define any error conditions. This im-
119 plementation returns ERR if the window pointer is null, or
120 if the lower-level <STRONG>wgetch</STRONG> call returns an ERR.
122 SVr3 and early SVr4 curses implementations did not reject
123 function keys; the SVr4.0 documentation claimed that "spe-
124 cial keys" (such as function keys, "home" key, "clear"
125 key, <EM>etc</EM>.) are "interpreted", without giving details. It
126 lied. In fact, the `character' value appended to the
127 string by those implementations was predictable but not
128 useful (being, in fact, the low-order eight bits of the
131 The functions <STRONG>getnstr</STRONG>, <STRONG>mvgetnstr</STRONG>, and <STRONG>mvwgetnstr</STRONG> were
132 present but not documented in SVr4.
135 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
136 <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_getch.3x.html">curs_getch(3x)</A></STRONG>, <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>.
140 <STRONG><A HREF="curs_getstr.3x.html">curs_getstr(3x)</A></STRONG>
144 <li><a href="#h2-NAME">NAME</a></li>
145 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
146 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
147 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
148 <li><a href="#h2-NOTES">NOTES</a></li>
149 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
150 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>