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<H1 class="no-header">curs_get_wstr 3x</H1>
<PRE>
<STRONG><A HREF="curs_get_wstr.3x.html">curs_get_wstr(3x)</A></STRONG> <STRONG><A HREF="curs_get_wstr.3x.html">curs_get_wstr(3x)</A></STRONG>
</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
<STRONG>get_wstr</STRONG>, <STRONG>getn_wstr</STRONG>, <STRONG>wget_wstr</STRONG>, <STRONG>wgetn_wstr</STRONG>, <STRONG>mvget_wstr</STRONG>, <STRONG>mvgetn_wstr</STRONG>,
<STRONG>mvwget_wstr</STRONG>, <STRONG>mvwgetn_wstr</STRONG> - get an array of wide characters from a
curses terminal keyboard
</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
<STRONG>int</STRONG> <STRONG>get_wstr(wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>getn_wstr(wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>wget_wstr(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>wgetn_wstr(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvget_wstr(int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvgetn_wstr(int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvwget_wstr(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>wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvwgetn_wstr(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>wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
The effect of <STRONG>get_wstr</STRONG> is as though a series of calls to <STRONG><A HREF="curs_get_wch.3x.html">get_wch(3x)</A></STRONG>
were made, until a newline, other end-of-line, or end-of-file condition
is processed. An end-of-file condition is represented by <STRONG>WEOF</STRONG>, as de-
fined in <STRONG><wchar.h></STRONG>. The newline and end-of-line conditions are repre-
sented by the <STRONG>\n</STRONG> <STRONG>wchar_t</STRONG> value. In all instances, the end of the
string is terminated by a null <STRONG>wchar_t</STRONG>. The routine places resulting
values in the area pointed to by <EM>wstr</EM>.
The user's erase and kill characters are interpreted. If keypad mode
is on for the window, <STRONG>KEY_LEFT</STRONG> and <STRONG>KEY_BACKSPACE</STRONG> are both considered
equivalent to the user's kill character.
Characters input are echoed only if <STRONG>echo</STRONG> is currently on. In that
case, backspace is echoed as deletion of the previous character (typi-
cally a left motion).
The effect of <STRONG>wget_wstr</STRONG> is as though a series of calls to <STRONG>wget_wch</STRONG> were
made.
The effect of <STRONG>mvget_wstr</STRONG> is as though a call to <STRONG>move</STRONG> and then a series
of calls to <STRONG>get_wch</STRONG> were made.
The effect of <STRONG>mvwget_wstr</STRONG> is as though a call to <STRONG>wmove</STRONG> and then a se-
ries of calls to <STRONG>wget_wch</STRONG> were made.
The <STRONG>getn_wstr</STRONG>, <STRONG>mvgetn_wstr</STRONG>, <STRONG>mvwgetn_wstr</STRONG>, and <STRONG>wgetn_wstr</STRONG> functions are
identical to the <STRONG>get_wstr</STRONG>, <STRONG>mvget_wstr</STRONG>, <STRONG>mvwget_wstr</STRONG>, and <STRONG>wget_wstr</STRONG> func-
tions, respectively, except that the <STRONG>*n_*</STRONG> versions read at most <EM>n</EM> char-
acters, letting the application prevent overflow of the input buffer.
</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
Using <STRONG>get_wstr</STRONG>, <STRONG>mvget_wstr</STRONG>, <STRONG>mvwget_wstr</STRONG>, or <STRONG>wget_wstr</STRONG> to read a line
that overflows the array pointed to by <STRONG>wstr</STRONG> causes undefined results.
The use of <STRONG>getn_wstr</STRONG>, <STRONG>mvgetn_wstr</STRONG>, <STRONG>mvwgetn_wstr</STRONG>, or <STRONG>wgetn_wstr</STRONG>, respec-
tively, is recommended.
These functions cannot return <STRONG>KEY_</STRONG> values because there is no way to
distinguish a <STRONG>KEY_</STRONG> value from a valid <STRONG>wchar_t</STRONG> value.
All of these routines except <STRONG>wgetn_wstr</STRONG> may be macros.
</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
All of these functions return <STRONG>OK</STRONG> upon successful completion. Other-
wise, they return <STRONG>ERR</STRONG>.
Functions using a window parameter return an error if it is null.
<STRONG>wgetn_wstr</STRONG>
returns an error if the associated call to <STRONG>wget_wch</STRONG> failed.
Functions with a "mv" prefix first perform a cursor movement using
<STRONG>wmove</STRONG>, and return an error if the position is outside the window, or if
the window pointer is null.
</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
These functions are described in The Single Unix Specification, Version
2. No error conditions are defined. This implementation returns <STRONG>ERR</STRONG>
if the window pointer is null, or if the lower-level <STRONG>wget_wch</STRONG> call re-
turns an <STRONG>ERR</STRONG>. In the latter case, an <STRONG>ERR</STRONG> return without other data is
treated as an end-of-file condition, and the returned array contains a
<STRONG>WEOF</STRONG> followed by a null <STRONG>wchar_t</STRONG>.
X/Open curses documented these functions to pass an array of <STRONG>wchar_t</STRONG> in
1997, but that was an error because of this part of the description:
The effect of <EM>get</EM><STRONG>_</STRONG><EM>wstr()</EM> is as though a series of calls to
<EM>get</EM><STRONG>_</STRONG><EM>wch()</EM> were made, until a newline character, end-of-line
character, or end-of-file character is processed.
The latter function <EM>get</EM><STRONG>_</STRONG><EM>wch()</EM> can return a negative value, while
<STRONG>wchar_t</STRONG> is a unsigned type. All of the vendors implement this using
<STRONG>wint_t</STRONG>, following the standard.
X/Open Curses, Issue 7 (2009) is unclear regarding whether the termi-
nating <EM>null</EM> <STRONG>wchar_t</STRONG> value is counted in the length parameter <EM>n</EM>. X/Open
Curses, Issue 7 revised the corresponding description of <STRONG>wgetnstr</STRONG> to
address this issue. The unrevised description of <STRONG>wget_nwstr</STRONG> can be in-
terpreted either way. This implementation counts the terminator in the
length.
X/Open Curses does not specify what happens if the length <EM>n</EM> is nega-
tive.
<STRONG>o</STRONG> For analogy with <STRONG>wgetnstr</STRONG>, ncurses 6.2 uses a limit (based on
<STRONG>LINE_MAX</STRONG>).
<STRONG>o</STRONG> Some other implementations (such as Solaris xcurses) do the same,
while others (PDCurses) do not allow this.
<STRONG>o</STRONG> NetBSD 7 curses imitates ncurses 6.1 in this regard, treating a <STRONG>-1</STRONG>
as an indefinite number of characters.
</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
Functions: <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_get_wch.3x.html">curs_get_wch(3x)</A></STRONG>, <STRONG><A HREF="curs_getstr.3x.html">curs_getstr(3x)</A></STRONG>.
<STRONG><A HREF="curs_get_wstr.3x.html">curs_get_wstr(3x)</A></STRONG>
</PRE>
<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-NOTES">NOTES</a></li>
<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
</ul>
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