2004-03-16 22:20:20 +03:00
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.\" $NetBSD: curses_border.3,v 1.4 2004/03/16 19:20:20 snj Exp $
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2002-10-21 17:55:07 +04:00
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.\"
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.\" Copyright (c) 2002
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2003-02-14 19:29:11 +03:00
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.\" Brett Lymn (blymn@NetBSD.org, brett_lymn@yahoo.com.au)
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2002-10-21 17:55:07 +04:00
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.\"
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.\" This code is donated to the NetBSD Foundation by the Author.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of the Author may not be used to endorse or promote
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.\" products derived from this software without specific prior written
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.\" permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\"
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.Dd August 12, 2002
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.Dt CURSES_BORDER 3
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.Os
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.Sh NAME
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.Nm curses_border ,
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.Nm border ,
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.Nm box ,
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.Nm wborder
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.Nd curses border drawing routines
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.Sh LIBRARY
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.Lb libcurses
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.Sh SYNOPSIS
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2003-04-16 17:34:34 +04:00
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.In curses.h
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2002-10-21 17:55:07 +04:00
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.Ft int
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.Fo border
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.Fa "chtype ls"
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.Fa "chtype rs"
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.Fa "chtype ts"
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.Fa "chtype bs"
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.Fa "chtype tl"
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.Fa "chtype tr"
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.Fa "chtype bl"
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.Fa "chtype br"
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.Fc
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.Ft int
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.Fn box "WINDOW *win" "chtype vertical" "chtype horizontal"
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.Ft int
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.Fo wborder
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.Fa "WINDOW *win"
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.Fa "chtype ls"
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.Fa "chtype rs"
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.Fa "chtype ts"
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.Fa "chtype bs"
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.Fa "chtype tl"
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.Fa "chtype tr"
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.Fa "chtype bl"
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.Fa "chtype br"
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.Fc
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.Sh DESCRIPTION
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These functions draw borders around
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.Dv stdscr
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or around the specified window.
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.Pp
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The
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.Fn border
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function draws a border around
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.Dv stdscr
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using the characters given as arguments to the function.
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The
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.Fa ls ,
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.Fa rs ,
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.Fa ts
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and
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.Fa bs
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are the characters used to draw the left, right, top and bottom sides,
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respectively.
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The
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.Fa tl ,
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.Fa tr ,
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.Fa bl
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and
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.Fa br
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are the characters used to draw the top-left, top-right, bottom-left
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and bottom-right corners, respectively.
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If any of the characters have a text portion that is 0 then a default
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alternate character set character is used for that character.
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Note that even though the text portion of the argument is 0, the argument
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can still be used to specify the attributes for that portion of the border.
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The following table shows the default characters for each argument:
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.Pp
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.Bl -column "ls" -offset indent
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.It ls ACS_VLINE
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.It rs ACS_VLINE
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.It ts ACS_HLINE
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.It bs ACS_HLINE
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.It tl ACS_ULCORNER
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.It tr ACS_URCORNER
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.It bl ACS_LLCORNER
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.It br ACS_LRCORNER
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.El
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.Pp
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.Fn wborder
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is the same as
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.Fn border
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excepting that the border is drawn around the specified window.
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.Pp
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The
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.Fn box
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command draws a box around the window given in
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.Fa win
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using the
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.Fa vertical
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character for the vertical lines and the
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2004-03-16 22:20:20 +03:00
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.Fa horizontal
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2002-10-21 17:55:07 +04:00
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character for the horizontal lines.
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The corner characters of this box will be the defaults as described for
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.Fn border
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above.
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Passing characters with text portion that is 0 to
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.Fn box
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will result in the same defaults as those for
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.Fn border
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as described above.
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.Sh RETURN VALUES
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Functions returning pointers will return
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.Dv NULL
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if an error is detected.
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The functions that return an int will return one of the following
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values:
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.Pp
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.Bl -tag -width ERR -compact
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.It Er OK
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The function completed successfully.
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.It Er ERR
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An error occurred in the function.
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.El
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.Sh SEE ALSO
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.Xr curses_attributes 3 ,
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.Xr curses_line 3
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.Sh STANDARDS
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The
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.Nx
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Curses library complies with the X/Open Curses specification, part of the
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Single Unix Specification.
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.Sh HISTORY
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The Curses package appeared in
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.Bx 4.0 .
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