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- * @Id: curs_addch.3x,v 1.59 2022/02/12 20:07:29 tom Exp @
+ * @Id: curs_addch.3x,v 1.64 2023/07/01 14:23:04 tom Exp @
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-<H1 class="no-header">curs_addch 3x</H1>
+<H1 class="no-header">curs_addch 3x 2023-07-01 ncurses 6.4 Library calls</H1>
<PRE>
-<STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>
<STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>
+<STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>
Library calls <STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>
<STRONG>o</STRONG> The cursor automatically wraps to the beginning of the next line.
- <STRONG>o</STRONG> At the bottom of the current scrolling region, and if <STRONG>scrollok</STRONG> is
- enabled, the scrolling region is scrolled up one line.
+ <STRONG>o</STRONG> At the bottom of the current scrolling region, and if <STRONG><A HREF="scrollok.3x.html">scrollok(3x)</A></STRONG>
+ is enabled, the scrolling region is scrolled up one line.
- <STRONG>o</STRONG> If <STRONG>scrollok</STRONG> is not enabled, writing a character at the lower right
- margin succeeds. However, an error is returned because it is not
- possible to wrap to a new line
+ <STRONG>o</STRONG> If <STRONG><A HREF="scrollok.3x.html">scrollok(3x)</A></STRONG> is not enabled, writing a character at the lower
+ right margin succeeds. However, an error is returned because it is
+ not possible to wrap to a new line
If <EM>ch</EM> is a tab, newline, carriage return or backspace, the cursor is
moved appropriately within the window:
may be altered by setting the <STRONG>TABSIZE</STRONG> variable.
If <EM>ch</EM> is any other nonprintable character, it is drawn in printable
- form, i.e., the <STRONG>^</STRONG><EM>X</EM> notation used by <STRONG><A HREF="unctrl.3x.html">unctrl(3x)</A></STRONG>. Calling <STRONG>winch</STRONG> after
- adding a nonprintable character does not return the character itself,
- but instead returns the printable representation of the character.
+ form, using the same convention as <STRONG><A HREF="unctrl.3x.html">unctrl(3x)</A></STRONG>:
+
+ <STRONG>o</STRONG> Control characters are displayed in the <STRONG>^</STRONG><EM>X</EM> notation.
+
+ <STRONG>o</STRONG> Values above 128 are either meta characters (if the screen has not
+ been initialized, or if <STRONG><A HREF="curs_inopts.3x.html">meta(3x)</A></STRONG> has been called with a <STRONG>TRUE</STRONG> E
+ parameter), shown in the <STRONG>M-</STRONG><EM>X</EM> notation, or are displayed as
+ themselves. In the latter case, the values may not be printable;
+ this follows the X/Open specification.
+
+ Calling <STRONG>winch</STRONG> after adding a nonprintable character does not return the
+ character itself, but instead returns the printable representation of
+ the character.
Video attributes can be combined with a character argument passed to
<STRONG>addch</STRONG> or related functions by logical-ORing them into the character.
If it is not possible to add a complete character, an error is
returned:
- <STRONG>o</STRONG> If <STRONG>scrollok</STRONG> is not enabled, writing a character at the lower right
- margin succeeds. However, an error is returned because it is not
- possible to wrap to a new line
+ <STRONG>o</STRONG> If <STRONG><A HREF="scrollok.3x.html">scrollok(3x)</A></STRONG> is not enabled, writing a character at the lower
+ right margin succeeds. However, an error is returned because it is
+ not possible to wrap to a new line
<STRONG>o</STRONG> If an error is detected when converting a multibyte character to a
sequence of bytes, or if it is not possible to add all of the
-
<STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>
+
ncurses 6.4 2023-07-01 <STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>
</PRE>
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