98 lines
3.2 KiB
Groff
98 lines
3.2 KiB
Groff
.\" $NetBSD: menu_item_current.3,v 1.6 2002/02/07 07:00:50 ross Exp $
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.\"
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.\" Copyright (c) 1999
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.\" Brett Lymn - blymn@baea.com.au, brett_lymn@yahoo.com.au
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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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.Dd September 10, 1999
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.Dt MENU_ITEM_CURRENT 3
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.Os
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.Sh NAME
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.Nm current_item ,
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.Nm item_index ,
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.Nm set_current_item ,
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.Nm set_top_row
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.Nm top_row
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.Nd get or set item pointers or top row
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.Sh LIBRARY
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.Lb libmenu
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.Sh SYNOPSIS
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.Fd #include \*[Lt]menu.h\*[Gt]
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.Ft ITEM *
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.Fn current_item "MENU *menu"
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.Ft int
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.Fn item_index "ITEM *item"
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.Ft int
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.Fn set_current_item "MENU *menu" "ITEM *item"
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.Ft int
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.Fn set_top_row "MENU *menu" "int row"
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.Ft int
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.Fn top_row "MENU *menu"
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.Sh DESCRIPTION
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The
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.Fn current_item
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returns a pointer to the current menu item. The
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.Fn set_current_item
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can be used to set this to the item give. The
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.Fn item_index
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function returns the index number in the array of items for the item
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pointed to by the
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.Fa item
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parameter. The
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.Fn set_top_row
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function sets the top row of the menu displayed to be the row given.
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The current item becomes the leftmost item of the top row. The
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.Fn top_row
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call returns the row number that is currently at the top of the
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displayed menu.
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.Sh RETURN VALUES
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.Fn current_item
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returns NULL if no items are attached to the menu.
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.Pp
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.Bl -tag -width E_NOT_CONNECTED -compact
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.It Er E_OK
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The function was successful.
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.It Er E_BAD_ARGUMENT
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One or more of the arguments passed to the function was incorrect.
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.It Er E_BAD_STATE
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The function was called from within an initialisation or termination
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routine.
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.It Er E_NOT_CONNECTED
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The item is not connected to a menu.
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.El
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.Sh SEE ALSO
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.Xr curses 3 ,
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.Xr menus 3
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.Sh NOTES
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The header
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.Pa \*[Lt]menu.h\*[Gt]
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automatically includes both
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.Pa \*[Lt]curses.h\*[Gt]
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and
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.Pa \*[Lt]eti.h\*[Gt] .
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