1999-11-24 15:43:15 +03:00
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.\" $NetBSD: menus.3,v 1.2 1999/11/24 12:43:19 kleink Exp $
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.\"
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1999-11-23 14:12:34 +03:00
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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, 1999
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.Dt MENUS 3
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.Os BSD 4
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.Sh NAME
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.Nm Menus
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.Nd menu library
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.Sh LIBRARY
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.Lb libmenu
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.Sh SYNOPSIS
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.Fd #include <menu.h>
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.Sh DESCRIPTION
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The
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.Xr menu 3
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provides a terminal independent menu system using the
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.Xr curses 3
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library. Before using the
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.Xr menu 3
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functions the terminal must be set up by
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.Xr curses 3
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using the
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.Fn initscr
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function or similar. Programs using
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.Xr menu
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functions must be linked with the
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.Xr curses 3
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library
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.Xr -lcurses .
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.Pp
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The
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.Xr menu 3
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library provides facilties for defining menu items, placing a menu on the
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terminal screen, assign pre and post change operations and setting the
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attributes of both the menu and it's items.
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.Sh Defining default attributes for menus and items
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The
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.Xr menu 3
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library allows any settable attribute or option of both the menu and item
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objects to be defined such that any new menu or item automatically inherits
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the value as default. Setting the default value will not affect any item or
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menu that has already been created but will be applied to subsequent objects.
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To set the default attribute or option the set routine is passed a NULL
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pointer in the item or menu parameter when calling the set routine. The
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current default value can be retrieved by calling the get routine with a
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NULL pointer for the item or menu parameter.
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.Pp
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.ta 20
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.nf
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.ft 3
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menus Routine Name Manual Page Name
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.sp 0.5
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current_item menu_item_current(3)
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free_item menu_item_new(3)
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free_menu menu_new(3)
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item_count menu_items(3)
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item_description menu_item_name(3)
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item_index menu_item_current(3)
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item_init menu_hook(3)
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item_name menu_item_name(3)
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item_opts menu_item_opts(3)
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item_opts_off menu_item_opts(3)
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item_opts_on menu_item_opts(3)
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item_term menu_hook(3)
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item_userptr menu_item_userptr(3)
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item_value menu_item_value(3)
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item_visible menu_item_visible(3)
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menu_back menu_attributes(3)
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menu_driver menu_driver(3)
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menu_fore menu_attributes(3)
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menu_format menu_format(3)
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menu_grey menu_attributes(3)
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menu_init menu_hook(3)
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menu_items menu_items(3)
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menu_mark menu_mark(3)
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menu_opts menu_opts(3)
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menu_opts_off menu_opts(3)
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menu_opts_on menu_opts(3)
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menu_pad menu_attributes(3)
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menu_pattern menu_pattern(3)
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menu_sub menu_win(3)
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menu_term menu_hook(3)
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menu_unmark menu_mark(3)
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menu_userptr menu_userptr(3)
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men_win menu_win(3)
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new_item menu_item_new(3)
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new_menu menu_new(3)
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pos_menu_cursor menu_cursor(3)
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post_menu menu_post(3)
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scale_window menu_win(3)
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set_current_item menu_item_current(3)
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set_item_init menu_hook(3)
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set_item_opts menu_item_opts(3)
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set_item_term menu_hook(3)
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set_item_userptr menu_item_userptr(3)
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set_item_value menu_item_value(3)
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set_menu_back menu_attributes(3)
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set_menu_fore menu_attributes(3)
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set_menu_format menu_format(3)
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set_menu_grey menu_attributes(3)
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set_menu_init menu_hook(3)
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set_menu_items menu_items(3)
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set_menu_mark menu_mark(3)
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set_menu_opts menu_opts(3)
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set_menu_pad menu_attributes(3)
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set_menu_pattern menu_pattern(3)
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set_menu_sub menu_win(3)
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set_menu_term menu_hook(3)
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set_menu_unmark menu_mark(3)
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set_menu_userptr menu_userptr(3)
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set_menu_win menu_win(3)
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set_top_row menu_item_current(3)
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top_row menu_item_current(3)
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unpost_menu menu_post(3)
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.fi
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.ft 1
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.br
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.ne 8
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.Sh RETURN VALUES
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Any function returning a string pointer will return NULL if an error
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occurs. Functions returning an integer will return one of the
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following:
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.Pp
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.ta 20
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.nf
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E_OK The function was successful
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E_SYSTEM_ERROR There was a system error during the call.
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E_BAD_ARGUMENT One or more of the arguments passed to the function
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was incorrect.
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E_POSTED The menu is already posted.
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E_CONNECTED An item was already connected to a menu.
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E_BAD_STATE The function was called from within an initialisation
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or termination routine.
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E_NO_ROOM The menu does not fit within the subwindow.
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E_NOT_POSTED The menu is not posted
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E_UNKNOWN_COMMAND The menu driver does not recognise the request
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passed to it.
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E_NO_MATCH The character search failed to find a match.
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E_NOT_SELECTABLE The item could not be selected.
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E_NOT_CONNECTED The item is not connected to a menu.
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E_REQUEST_DENIED The menu driver could not process the request.
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.fi
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.ft 1
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.br
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.ne 8
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.Sh SEE ALSO
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.Xr curses 3
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