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- * @Id: curs_inch.3x,v 1.33 2023/08/19 20:46:33 tom Exp @
+ * @Id: curs_inch.3x,v 1.37 2023/09/16 23:37:03 tom Exp @
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-<H1 class="no-header">curs_inch 3x 2023-08-19 ncurses 6.4 Library calls</H1>
+<H1 class="no-header">curs_inch 3x 2023-09-16 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-NAME">NAME</a></H2><PRE>
- <STRONG>inch</STRONG>, <STRONG>winch</STRONG>, <STRONG>mvinch</STRONG>, <STRONG>mvwinch</STRONG> - get a character and attributes from a
- <STRONG>curses</STRONG> window
+ <STRONG>inch</STRONG>, <STRONG>winch</STRONG>, <STRONG>mvinch</STRONG>, <STRONG>mvwinch</STRONG> - get a <EM>curses</EM> character from a window
</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
- These routines return the character, of type <STRONG>chtype</STRONG>, at the current
- position in the named window. If any attributes are set for that
- position, their values are OR'ed into the value returned. Constants
- defined in <STRONG><curses.h></STRONG> can be used with the <STRONG>&</STRONG> (logical AND) operator to
+ These routines return the character, of type <STRONG>chtype</STRONG>, at the current
+ position in the named window. If any attributes are set for that
+ position, their values are OR'ed into the value returned. Constants
+ defined in <STRONG><curses.h></STRONG> can be used with the <STRONG>&</STRONG> (logical AND) operator to
extract the character or attributes alone.
</PRE><H3><a name="h3-Attributes">Attributes</a></H3><PRE>
- The following bit-masks may be AND-ed with characters returned by
+ The following bit-masks may be AND-ed with characters returned by
<STRONG>winch</STRONG>.
<STRONG>A_CHARTEXT</STRONG> Bit-mask to extract character
</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
- Functions with a "mv" prefix first perform a cursor movement using
+ 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.
- 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.
- 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.
gives an overview of the WINDOW and <STRONG>chtype</STRONG> data types.
<STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG>
- goes into more detail, pointing out portability problems and
+ goes into more detail, pointing out portability problems and
constraints on the use of <STRONG>chtype</STRONG> for returning window information.
<STRONG><A HREF="curs_in_wch.3x.html">curs_in_wch(3x)</A></STRONG>
- describes comparable functions for the wide-character (ncursesw)
+ describes comparable functions for the wide-character (ncursesw)
library.
-ncurses 6.4 2023-0
8-19 <STRONG><A HREF="curs_inch.3x.html">curs_inch(3x)</A></STRONG>
+ncurses 6.4 2023-0
9-16 <STRONG><A HREF="curs_inch.3x.html">curs_inch(3x)</A></STRONG>
</PRE>
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