ncurses 5.9 - patch 20140712

[ncurses.git] / man / curs_addch.3x

diff --git a/man/curs_addch.3x b/man/curs_addch.3x
index d8b645d7c35983dd86b08eb41f1c258d3e4d1092..e45048793a1e17294d24d4f63ec43635ab3fd65c 100644 (file)
--- a/man/curs_addch.3x
+++ b/man/curs_addch.3x
@@ -1,6 +1,6 @@
 '\" t
 .\"***************************************************************************
-.\" Copyright (c) 1998-2005,2006 Free Software Foundation, Inc.              *
+.\" Copyright (c) 1998-2011,2014 Free Software Foundation, Inc.              *
 .\"                                                                          *
 .\" Permission is hereby granted, free of charge, to any person obtaining a  *
 .\" copy of this software and associated documentation files (the            *
@@ -27,12 +27,18 @@
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"
-.\" $Id: curs_addch.3x,v 1.25 2006/12/02 17:02:22 tom Exp $
+.\" $Id: curs_addch.3x,v 1.33 2014/05/24 19:47:41 tom Exp $
 .TH curs_addch 3X ""
+.de bP
+.IP \(bu 4
+..
 .SH NAME
-\fBaddch\fR, \fBwaddch\fR, \fBmvaddch\fR, \fBmvwaddch\fR,
+\fBaddch\fR,
+\fBwaddch\fR,
+\fBmvaddch\fR,
+\fBmvwaddch\fR,
 \fBechochar\fR,
-\fBwechochar\fR - add a character (with attributes) to a \fBcurses\fR window, then advance the cursor
+\fBwechochar\fR \- add a character (with attributes) to a \fBcurses\fR window, then advance the cursor
 .SH SYNOPSIS
 \fB#include <curses.h>\fR
 .PP
@@ -52,17 +58,29 @@
 The \fBaddch\fR, \fBwaddch\fR, \fBmvaddch\fR and \fBmvwaddch\fR routines put
 the character \fIch\fR into the given window at its current window position,
 which is then advanced.  They are analogous to \fBputchar\fR in \fBstdio\fR(3).
-If the advance is at the right margin, the cursor automatically wraps to the
-beginning of the next line.  At the bottom of the current scrolling region, if
-\fBscrollok\fR is enabled, the scrolling region is scrolled up one line.
+If the advance is at the right margin:
+.bP
+The cursor automatically wraps to the beginning of the next line.
+.bP
+At the bottom of the current scrolling region,
+and if \fBscrollok\fR is enabled,
+the scrolling region is scrolled up one line.
+.bP
+If \fBscrollok\fR 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
 .PP
 If \fIch\fR is a tab, newline, or backspace,
-the cursor is moved appropriately within the window.
+the cursor is moved appropriately within the window:
+.bP
 Backspace moves the cursor one character left; at the left
 edge of a window it does nothing.
+.bP
 Newline does a \fBclrtoeol\fR,
 then moves the cursor to the window left margin on the next line,
 scrolling the window if on the last line.
+.bP
 Tabs are considered to be at every eighth column.
 The tab interval may be altered by setting the \fBTABSIZE\fR variable.
 .PP
@@ -87,7 +105,7 @@ their equivalents.
 .SS Line Graphics
 The following variables may be used to add line drawing characters to the
 screen with routines of the \fBaddch\fR family.  The default character listed
-below is used if the \fBacsc\fR capability doesn't define a terminal-specific
+below is used if the \fBacsc\fR capability does not define a terminal-specific
 replacement for it.
 The names are taken from VT100 nomenclature.
 .PP
@@ -105,7 +123,7 @@ ACS_DARROW  v       arrow pointing down
 ACS_DEGREE     '       degree symbol
 ACS_DIAMOND    +       diamond
 ACS_GEQUAL     >       greater-than-or-equal-to
-ACS_HLINE      -       horizontal line
+ACS_HLINE      \-      horizontal line
 ACS_LANTERN    #       lantern symbol
 ACS_LARROW     <       arrow pointing left
 ACS_LEQUAL     <       less-than-or-equal-to
@@ -118,9 +136,9 @@ ACS_PLMINUS #       plus/minus
 ACS_PLUS       +       plus
 ACS_RARROW     >       arrow pointing right
 ACS_RTEE       +       right tee
-ACS_S1 -       scan line 1
-ACS_S3 -       scan line 3
-ACS_S7 -       scan line 7
+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
@@ -134,6 +152,10 @@ All routines return the integer \fBERR\fR upon failure and \fBOK\fR on success
 (the SVr4 manuals specify only "an integer value other than \fBERR\fR") upon
 successful completion, unless otherwise noted in the preceding routine
 descriptions.
+.PP
+Functions with a "mv" prefix first perform a cursor movement using
+\fBwmove\fP, and return an error if the position is outside the window,
+or if the window pointer is null.
 .SH NOTES
 Note that \fBaddch\fR, \fBmvaddch\fR, \fBmvwaddch\fR, and
 \fBechochar\fR may be macros.
@@ -141,6 +163,10 @@ Note that \fBaddch\fR, \fBmvaddch\fR, \fBmvwaddch\fR, and
 All these functions are described in the XSI Curses standard, Issue 4.
 The defaults specified for forms-drawing characters apply in the POSIX locale.
 .LP
+X/Open Curses states that the \fIACS_\fP definitions are \fBchar\fP constants.
+For the wide-character implementation (see \fBcurs_add_wch\fP),
+there are analogous \fIWACS_\fP definitions which are \fBcchar_t\fP constants.
+.LP
 Some ACS symbols
 (ACS_S3,
 ACS_S7,
@@ -168,14 +194,9 @@ This is true of other implementations, but is not documented.
 \fBcurs_inch\fR(3X),
 \fBcurs_outopts\fR(3X),
 \fBcurs_refresh\fR(3X),
-\fBputc\fR(3S).
+\fBcurs_variables\fR(3X),
+\fBputc\fR(3).
 .PP
 Comparable functions in the wide-character (ncursesw) library are
 described in
 \fBcurs_add_wch\fR(3X).
-.\"#
-.\"# The following sets edit modes for GNU EMACS
-.\"# Local Variables:
-.\"# mode:nroff
-.\"# fill-column:79
-.\"# End: