menus - curses extension for programming menus
SYNOPSIS
#include <menu.h>
DESCRIPTION
The menus library provides terminal-independent facilities
for composing menu systems on character-cell terminals.
The library includes: item routines, which create and mod-
ify menu items; and menu routines, which group items into
menus, display menus on the screen, and handle interaction
with the user.
The menus library uses the curses libraries, and a curses
initialization routine such as initscr must be called
before using any of these functions. To use the menus
library, link with the options -lmenu -lcurses.
Current Default Values for Item Attributes
The menus library maintains a default value for item
attributes. You can get or set this default by calling
the appropriate get_ or set_ routine with a NULL item
pointer. Changing this default with a set_ function
affects future item creations, but does not change the
rendering of items already created.
Routine Name Index
The following table lists each menu routine and the name
of the manual page on which it is described.
l l . curses Routine Name Manual Page Name =
current_item mitem_current(3X) free_item
mitem_new(3X) free_menu menu_new(3X)
item_count menu_items(3X)
item_description mitem_name(3X)
item_index mitem_current(3X) item_init
menu_hook(3X) item_name mitem_name(3X) item_opts
mitem_opts(3X) item_opts_off mitem_opts(3X)
item_opts_on mitem_opts(3X) item_term menu_hook(3X)
item_userptr mitem_userptr(3X)
item_value mitem_value(3X) item_visible mitem_visi-
ble(3X) menu_back menu_attribs(3X)
menu_driver menu_driver(3X) menu_fore
menu_attribs(3X) menu_format menu_format(3X)
menu_grey menu_attribs(3X) menu_init
menu_hook(3X) menu_items menu_items(3X) menu_mark
menu_mark(3X) menu_opts menu_opts(3X)
menu_opts_off menu_opts(3X) menu_opts_on menu_opts(3X)
menu_pad menu_attribs(3X) menu_pattern menu_pat-
tern(3X) menu_request_by_name menu_requestname(3X)
menu_win(3X) menu_term menu_hook(3X)
menu_userptr menu_userptr(3X) menu_win
menu_win(3X) new_item mitem_new(3X) new_menu
menu_new(3X) pos_menu_cursor menu_cursor(3X)
post_menu menu_post(3X) scale_menu menu_win(3X)
set_current_item menu_current_item(3X)
set_item_init menu_hook(3X) set_item_opts mitem_opts(3X)
set_item_term menu_hook(3X)
set_item_userptr mitem_userptr(3X)
set_item_value mitem_value(3X)
set_menu_back menu_attribs(3X)
set_menu_fore menu_attribs(3X)
set_menu_format menu_format(3X)
set_menu_grey menu_attribs(3X)
set_menu_init menu_hook(3X) set_menu_items menu_items(3X)
set_menu_mark menu_mark(3X) set_menu_opts mitem_opts(3X)
set_menu_pad menu_attribs(3X)
set_menu_pattern menu_pattern(3X)
set_menu_spacing menu_spacing(3X)
set_menu_sub menu_win(3X) set_menu_term menu_hook(3X)
set_menu_userptr menu_userptr(3X)
set_menu_win menu_win(3X) set_top_row mitem_cur-
rent(3X) top_row mitem_current(3X)
unpost_menu menu_post(3X)
RETURN VALUE
Routines that return pointers return NULL on error. Rou-
tines that return an integer return one of the following
error codes:
E_OK The routine succeeded.
E_SYSTEM_ERROR
System error occurred (see errno).
E_BAD_ARGUMENT
Routine detected an incorrect or out-of-range argu-
ment.
E_POSTED
The menu is already posted.
E_BAD_STATE
Routine was called from an initialization or termina-
tion function.
E_NO_ROOM
Menu is too large for its window.
E_NOT_POSTED
The menu has not been posted.
The menu driver code saw an unknown request code.
E_NO_MATCH
Character failed to match.
E_NOT_SELECTABLE
The designated item cannot be selected.
E_NOT_CONNECTED
No items are connected to the menu.
E_REQUEST_DENIED
The menu driver could not process the request.
SEE ALSO
curses(3X) and 3X pages whose names begin "menu_" for
detailed descriptions of the entry points.
NOTES
The header file <menu.h> automatically includes the header
files <curses.h> and <eti.h>.
In your library list, libmenu.a should be before libn-
curses.a; that is, you want to say `-lmenu -lncurses', not
the other way around (which would give you a link error
using GNU ld(1) and many other linkers).
PORTABILITY
These routines emulate the System V menu library. They
were not supported on Version 7 or BSD versions.
AUTHORS
Juergen Pfeifer. Manual pages and adaptation for ncurses
by Eric S. Raymond.