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+<H1 class="no-header">curs_inch 3x 2024-04-20 ncurses 6.4 Library calls</H1>
<PRE>
-<!-- Manpage converted by man2html 3.0.1 -->
+<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>NAME</H2><PRE>
- <B>inch</B>, <B>winch</B>, <B>mvinch</B>, <B>mvwinch</B> - get a character and
- attributes from a <B>curses</B> window
-</PRE>
-<H2>SYNOPSIS</H2><PRE>
- <B>#include</B> <B><curses.h></B>
- <B>chtype</B> <B>inch(void);</B>
- <B>chtype</B> <B>winch(WINDOW</B> <B>*win);</B>
- <B>chtype</B> <B>mvinch(int</B> <B>y,</B> <B>int</B> <B>x);</B>
- <B>chtype</B> <B>mvwinch(WINDOW</B> <B>*win,</B> <B>int</B> <B>y,</B> <B>int</B> <B>x);</B>
+</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
+ <STRONG>inch</STRONG>, <STRONG>winch</STRONG>, <STRONG>mvinch</STRONG>, <STRONG>mvwinch</STRONG> - get a <EM>curses</EM> character from a window
-</PRE>
-<H2>DESCRIPTION</H2><PRE>
- These routines return the character, of type <B>chtype</B>, 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
- <B><curses.h></B> can be used with the <B>&</B> (logical AND) operator
- to extract the character or attributes alone.
+</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
+ <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
+ <STRONG>chtype</STRONG> <STRONG>inch(void);</STRONG>
+ <STRONG>chtype</STRONG> <STRONG>winch(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
- <B>Attributes</B>
- The following bit-masks may be AND-ed with characters
- returned by <B>winch</B>.
+ <STRONG>chtype</STRONG> <STRONG>mvinch(int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>);</STRONG>
+ <STRONG>chtype</STRONG> <STRONG>mvwinch(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>
- <B>A_CHARTEXT</B> Bit-mask to extract character
- <B>A_ATTRIBUTES</B> Bit-mask to extract attributes
- <B>A_COLOR</B> Bit-mask to extract color-pair field information
+</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
+ extract the character or attributes alone.
-</PRE>
-<H2>NOTES</H2><PRE>
- Note that all of these routines may be macros.
+</PRE><H3><a name="h3-Attributes">Attributes</a></H3><PRE>
+ The following bit masks may be AND-ed with characters returned by
+ <STRONG>winch</STRONG>.
-</PRE>
-<H2>PORTABILITY</H2><PRE>
- These functions are described in the XSI Curses standard,
- Issue 4.
+ <STRONG>Name</STRONG> <STRONG>Description</STRONG>
+ ------------------------------------------------------------------------
+ <STRONG>A_CHARTEXT</STRONG> Extract character
+ <STRONG>A_ATTRIBUTES</STRONG> Extract attributes
+ <STRONG>A_COLOR</STRONG> Extract color pair information
-</PRE>
-<H2>SEE ALSO</H2><PRE>
- <B><A HREF="ncurses.3x.html">curses(3x)</A></B>.
+</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
+ 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
+ character are used by <STRONG>winch</STRONG>.
+</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
+ Note that all of these routines may be macros.
+
+</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
+ These functions are described in X/Open Curses, Issue 4.
+ 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>
+ attribute.
+ 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
+ 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
+ equivalents to these functions.
+</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
+ <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="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_instr.3x.html">curs_instr(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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+<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>
+<ul>
+<li><a href="#h3-Attributes">Attributes</a></li>
+</ul>
+</li>
+<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
+<li><a href="#h2-NOTES">NOTES</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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