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- 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.
+ Functions prefixed with "mv" first perform cursor movement and fail if
+ the position (<EM>y</EM>, <EM>x</EM>) is outside the window boundaries.
</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
Any of these functions other than <STRONG>wgetn_wstr</STRONG> may be macros.
</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
Any of these functions other than <STRONG>wgetn_wstr</STRONG> may be macros.
- 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>,
+ 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>,
distinguish a <STRONG>KEY_</STRONG> value from a valid <STRONG>wchar_t</STRONG> value.
</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
distinguish a <STRONG>KEY_</STRONG> value from a valid <STRONG>wchar_t</STRONG> value.
</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.
+ X/Open Curses, Issue 4 describes these functions. It specifies no
+ error conditions for them.
- This implementation returns <STRONG>ERR</STRONG> if the window pointer is null, or if
- the lower-level <STRONG>wget_wch</STRONG> call returns an <STRONG>ERR</STRONG>. In the latter case, an
- <STRONG>ERR</STRONG> return without other data is treated as an end-of-file condition,
+ This implementation returns <STRONG>ERR</STRONG> if the window pointer is null, or if
+ the lower-level <STRONG>wget_wch</STRONG> call returns 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 <STRONG>get_wstr</STRONG> is as though a series of calls to <STRONG>get_wch</STRONG>
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 <STRONG>get_wstr</STRONG> is as though a series of calls to <STRONG>get_wch</STRONG>
- were made, until a newline character, end-of-line character, or
+ were made, until a newline character, end-of-line character, or
- 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>,
+ 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>,
- <STRONG>wgetnstr</STRONG> to address this issue. The unrevised description of
- <STRONG>wget_nwstr</STRONG> can be interpreted either way. This implementation counts
+ <STRONG>wgetnstr</STRONG> to address this issue. The unrevised description of
+ <STRONG>wget_nwstr</STRONG> can be interpreted either way. This implementation counts
- <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_getstr.3x.html">curs_getstr(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> describes comparable functions of the <EM>ncurses</EM> library
+ in its non-wide-character configuration.