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- * @Id: curs_inch.3x,v 1.44 2024/01/13 22:05:39 tom Exp @
+ * @Id: curs_inch.3x,v 1.51 2024/04/20 21:20:07 tom Exp @
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-<H1 class="no-header">curs_inch 3x 2024-01-13 ncurses 6.4 Library calls</H1>
+<H1 class="no-header">curs_inch 3x 2024-04-20 ncurses 6.4 Library calls</H1>
<PRE>
<STRONG><A HREF="curs_inch.3x.html">curs_inch(3x)</A></STRONG> Library calls <STRONG><A HREF="curs_inch.3x.html">curs_inch(3x)</A></STRONG>
</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
- 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.
- The <STRONG>winch</STRONG> function does not return an error if the window contains
- characters larger than 8-bits (255). Only the low-order 8 bits of the
+ The <STRONG>winch</STRONG> function does not return an error if the window contains
+ characters larger than 8-bits (255). Only the low-order 8 bits of the
character are used by <STRONG>winch</STRONG>.
</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
- These functions are described in the XSI Curses standard, Issue 4.
+ These functions are described in X/Open Curses, Issue 4.
- Very old systems (before standardization) provide a different function
+ Very old systems (before standardization) provide a different function
with the same name:
- <STRONG>o</STRONG> The <STRONG>winch</STRONG> function was part of the original BSD curses library,
- which stored a 7-bit character combined with the <EM>standout</EM>
+ <STRONG>o</STRONG> The <STRONG>winch</STRONG> function was part of the original BSD curses library,
+ which stored a 7-bit character combined with the <EM>standout</EM>
attribute.
- In BSD curses, <STRONG>winch</STRONG> returned only the character (as an integer)
+ In BSD curses, <STRONG>winch</STRONG> returned only the character (as an integer)
with the <EM>standout</EM> attribute removed.
- <STRONG>o</STRONG> System V curses added support for several video attributes which
+ <STRONG>o</STRONG> System V curses added support for several video attributes which
could be combined with characters in the window.
Reflecting this improvement, the function was altered to return the
character combined with all video attributes in a <STRONG>chtype</STRONG> value.
X/Open Curses does not specify the size and layout of attributes, color
- and character values in <STRONG>chtype</STRONG>; it is implementation-dependent. This
- implementation uses 8 bits for character values. An application using
- more bits, e.g., a Unicode value, should use the wide-character
+ and character values in <STRONG>chtype</STRONG>; it is implementation-dependent. This
+ implementation uses 8 bits for character values. An application using
+ more bits, e.g., a Unicode value, should use the wide-character
equivalents to these functions.
</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
- <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>
- gives an overview of the <STRONG>WINDOW</STRONG> and <STRONG>chtype</STRONG> data types.
+ <STRONG><A HREF="curs_in_wch.3x.html">curs_in_wch(3x)</A></STRONG> describes comparable functions of the <EM>ncurses</EM> library
+ in its wide-character configuration (<EM>ncursesw</EM>).
- <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG>
- goes into more detail, pointing out portability problems and
- constraints on the use of <STRONG>chtype</STRONG> for returning window
- information.
+ <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_instr.3x.html">curs_instr(3x)</A></STRONG>
- <STRONG><A HREF="curs_in_wch.3x.html">curs_in_wch(3x)</A></STRONG>
- describes comparable functions for the wide-character (ncursesw)
- library.
-
-ncurses 6.4 2024-01-13 <STRONG><A HREF="curs_inch.3x.html">curs_inch(3x)</A></STRONG>
+ncurses 6.4 2024-04-20 <STRONG><A HREF="curs_inch.3x.html">curs_inch(3x)</A></STRONG>
</PRE>
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