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- * Copyright (c) 1998-2006,2010 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2010,2017 Free Software Foundation, Inc. *
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- * @Id: curs_instr.3x,v 1.16 2010/12/04 18:38:55 tom Exp @
+ * @Id: curs_instr.3x,v 1.17 2017/04/29 21:37:55 tom Exp @
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All of the functions return <STRONG>ERR</STRONG> upon failure, or the num-
ber of characters actually read into the string.
- X/Open defines no error conditions. In this implementa-
- tion, if the window parameter is null or the str parameter
- is null, a zero is returned.
+ X/Open Curses defines no error conditions. In this imple-
+ mentation:
- Functions with a "mv" prefix first perform a cursor move-
- ment using <STRONG>wmove</STRONG>, and return an error if the position is
+ <STRONG>o</STRONG> If the <EM>win</EM> parameter is null, an error is returned,
+
+ <STRONG>o</STRONG> If the <EM>chstr</EM> parameter is null, an error is returned,
+
+ Functions with a "mv" prefix first perform a cursor move-
+ ment 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>
- SVr4 does not document whether a length limit includes or
+ SVr4 does not document whether a length limit includes or
excludes the trailing NUL.
- The ncurses library extends the XSI description by allow-
- ing a negative value for <EM>n</EM>. In this case, the functions
+ The ncurses library extends the XSI description by allow-
+ ing a negative value for <EM>n</EM>. In this case, the functions
return the string ending at the right margin.
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