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-<TITLE>curs_addch 3x</TITLE>
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-<H1>curs_addch 3x</H1>
-<HR>
-<PRE>
-<!-- Manpage converted by man2html 3.0.1 -->
-
-</PRE>
-<H2>NAME</H2><PRE>
- <STRONG>addch</STRONG>, <STRONG>waddch</STRONG>, <STRONG>mvaddch</STRONG>, <STRONG>mvwaddch</STRONG>, <STRONG>echochar</STRONG>, <STRONG>wechochar</STRONG> -
- add a character (with attributes) to a <STRONG>curses</STRONG> window, then
- advance the cursor
-
-
-</PRE>
-<H2>SYNOPSIS</H2><PRE>
- <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
-
- <STRONG>int</STRONG> <STRONG>addch(const</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG>
- <STRONG>int</STRONG> <STRONG>waddch(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>const</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG>
- <STRONG>int</STRONG> <STRONG>mvaddch(int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>const</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG>
- <STRONG>int</STRONG> <STRONG>mvwaddch(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>const</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG>
- <STRONG>int</STRONG> <STRONG>echochar(const</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG>
- <STRONG>int</STRONG> <STRONG>wechochar(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>const</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG>
-
-
-</PRE>
-<H2>DESCRIPTION</H2><PRE>
- The <STRONG>addch</STRONG>, <STRONG>waddch</STRONG>, <STRONG>mvaddch</STRONG> and <STRONG>mvwaddch</STRONG> routines put the
- character <EM>ch</EM> into the given window at its current window
- position, which is then advanced. They are analogous to
- <STRONG>putchar</STRONG> in <STRONG><A HREF="stdio.3.html">stdio(3)</A></STRONG>. If the advance is at the right mar-
- gin, the cursor automatically wraps to the beginning of
- the next line. At the bottom of the current scrolling
- region, if <STRONG>scrollok</STRONG> is enabled, the scrolling region is
- scrolled up one line.
-
- If <EM>ch</EM> is a tab, newline, or backspace, the cursor is moved
- appropriately within the window. Backspace moves the cur-
- sor one character left; at the left edge of a window it
- does nothing. Newline does a <STRONG>clrtoeol</STRONG>, then moves the
- cursor to the window left margin on the next line,
- scrolling the window if on the last line). Tabs are con-
- sidered to be at every eighth column. The tab interval
- may be altered by setting the <STRONG>TABSIZE</STRONG> variable.
-
- If <EM>ch</EM> is any control character other than tab, newline, or
- backspace, it is drawn in <STRONG>^</STRONG><EM>X</EM> notation. Calling <STRONG>winch</STRONG>
- after adding a control character does not return the char-
- acter itself, but instead returns the ^-representation of
- the control 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. (Thus, text, including attributes,
- can be copied from one place to another using <STRONG>inch</STRONG> and
- <STRONG>addch</STRONG>.). See the <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG> page for values of prede-
- fined video attribute constants that can be usefully OR'ed
- into characters.
-
- The <STRONG>echochar</STRONG> and <STRONG>wechochar</STRONG> routines are equivalent to a
- call to <STRONG>addch</STRONG> followed by a call to <STRONG>refresh</STRONG>, or a call to
- <STRONG>waddch</STRONG> followed by a call to <STRONG>wrefresh</STRONG>. The knowledge that
- only a single character is being output is used and, for
- non-control characters, a considerable performance gain
- may be seen by using these routines instead of their
- equivalents.
-
- <STRONG>Line</STRONG> <STRONG>Graphics</STRONG>
- The following variables may be used to add line drawing
- characters to the screen with routines of the <STRONG>addch</STRONG> fam-
- ily. The default character listed below is used if the
- <STRONG>acsc</STRONG> capability doesn't define a terminal-specific
- replacement for it (but see the EXTENSIONS section below).
- The names are taken from VT100 nomenclature.
-
- <EM>Name</EM> <EM>Default</EM> <EM>Description</EM>
- --------------------------------------------------
- ACS_BLOCK # solid square block
- ACS_BOARD # board of squares
- ACS_BTEE + bottom tee
- ACS_BULLET o bullet
- ACS_CKBOARD : checker board (stipple)
- ACS_DARROW v arrow pointing down
- ACS_DEGREE ' degree symbol
- ACS_DIAMOND + diamond
- ACS_GEQUAL &gt; greater-than-or-equal-to
- ACS_HLINE - horizontal line
- ACS_LANTERN # lantern symbol
- ACS_LARROW &lt; arrow pointing left
- ACS_LEQUAL &lt; less-than-or-equal-to
- ACS_LLCORNER + lower left-hand corner
- ACS_LRCORNER + lower right-hand corner
- ACS_LTEE + left tee
- ACS_NEQUAL ! not-equal
- ACS_PI * greek pi
- ACS_PLMINUS # plus/minus
- ACS_PLUS + plus
- ACS_RARROW &gt; arrow pointing right
- ACS_RTEE + right tee
- ACS_S1 - scan line 1
- ACS_S3 - scan line 3
- ACS_S7 - scan line 7
- ACS_S9 _ scan line 9
- ACS_STERLING f pound-sterling symbol
- ACS_TTEE + top tee
- ACS_UARROW ^ arrow pointing up
- ACS_ULCORNER + upper left-hand corner
- ACS_URCORNER + upper right-hand corner
- ACS_VLINE | vertical line
-
-
-
-</PRE>
-<H2>RETURN VALUE</H2><PRE>
- All routines return the integer <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> on
- success (the SVr4 manuals specify only "an integer value
- other than <STRONG>ERR</STRONG>") upon successful completion, unless other-
- wise noted in the preceding routine descriptions.
-
-
-</PRE>
-<H2>NOTES</H2><PRE>
- Note that <STRONG>addch</STRONG>, <STRONG>mvaddch</STRONG>, <STRONG>mvwaddch</STRONG>, and <STRONG>echochar</STRONG> may be
- macros.
-
-
-</PRE>
-<H2>PORTABILITY</H2><PRE>
- All these functions are described in the XSI Curses stan-
- dard, Issue 4. The defaults specified for forms-drawing
- characters apply in the POSIX locale.
-
- Some ACS symbols (ACS_S3, ACS_S7, ACS_LEQUAL, ACS_GEQUAL,
- ACS_PI, ACS_NEQUAL, ACS_STERLING) were not documented in
- any publicly released System V. However, many publicly
- available terminfos include <STRONG>acsc</STRONG> strings in which their
- key characters (pryz{|}) are embedded, and a second-hand
- list of their character descriptions has come to light.
- The ACS-prefixed names for them were invented for
- <STRONG><A HREF="ncurses.3x.html">ncurses(3x)</A></STRONG>.
-
- The <STRONG>TABSIZE</STRONG> variable is implemented in some versions of
- curses, but is not part of X/Open curses.
-
-
-</PRE>
-<H2>SEE ALSO</H2><PRE>
- <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG>, <STRONG><A HREF="curs_clear.3x.html">curs_clear(3x)</A></STRONG>, <STRONG><A HREF="curs_inch.3x.html">curs_inch(3x)</A></STRONG>,
- <STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>, <STRONG><A HREF="putc.3S.html">putc(3S)</A></STRONG>.
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-<ADDRESS>
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