menu.3x - Online Linux Manual Page

menu - Online Linux Manual PageSection : 3X
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NAMEmenu − curses extension for programming menus

SYNOPSIS#include <menu.h>

DESCRIPTIONThe menu library provides terminal-independent facilities for composing menu systems on character-cell terminals. The library includes: item routines, which create and modify menu items; and menu routines, which group items into menus, display menus on the screen, and handle interaction with the user. The menu 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 menu library, link with the options −lmenu −lcurses.

Current Default Values for Item Attributes The menu 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. curses Routine NameManual Page Name current_itemmitem_current(3X) free_item mitem_new(3X) free_menu menu_new(3X) item_countmenu_items(3X) item_descriptionmitem_name(3X) item_indexmitem_current(3X) item_init menu_hook(3X) item_name mitem_name(3X) item_opts mitem_opts(3X) item_opts_offmitem_opts(3X) item_opts_onmitem_opts(3X) item_term menu_hook(3X) item_userptrmitem_userptr(3X) item_valuemitem_value(3X) item_visiblemitem_visible(3X) menu_back menu_attributes(3X) menu_drivermenu_driver(3X) menu_fore menu_attributes(3X) menu_formatmenu_format(3X) menu_grey menu_attributes(3X) menu_init menu_hook(3X) menu_itemsmenu_items(3X) menu_mark menu_mark(3X) menu_opts menu_opts(3X) menu_opts_offmenu_opts(3X) menu_opts_onmenu_opts(3X) menu_pad menu_attributes(3X) menu_patternmenu_pattern(3X) menu_request_by_namemenu_requestname(3X) menu_request_namemenu_requestname(3X) menu_spacingmenu_spacing(3X) menu_sub menu_win(3X) menu_term menu_hook(3X) menu_userptrmenu_userptr(3X) menu_win menu_win(3X) new_item mitem_new(3X) new_menu menu_new(3X) pos_menu_cursormenu_cursor(3X) post_menu menu_post(3X) scale_menumenu_win(3X) set_current_itemmitem_current(3X) set_item_initmenu_hook(3X) set_item_optsmitem_opts(3X) set_item_termmenu_hook(3X) set_item_userptrmitem_userptr(3X) set_item_valuemitem_value(3X) set_menu_backmenu_attributes(3X) set_menu_foremenu_attributes(3X) set_menu_formatmenu_format(3X) set_menu_greymenu_attributes(3X) set_menu_initmenu_hook(3X) set_menu_itemsmenu_items(3X) set_menu_markmenu_mark(3X) set_menu_optsmitem_opts(3X) set_menu_padmenu_attributes(3X) set_menu_patternmenu_pattern(3X) set_menu_spacingmenu_spacing(3X) set_menu_submenu_win(3X) set_menu_termmenu_hook(3X) set_menu_userptrmenu_userptr(3X) set_menu_winmenu_win(3X) set_top_rowmitem_current(3X) top_row mitem_current(3X) unpost_menumenu_post(3X)

RETURN VALUERoutines that return pointers return NULL on error. Routines that return an integer return one of the following error codes: E_OK The routine succeeded. E_BAD_ARGUMENT Routine detected an incorrect or out-of-range argument. E_BAD_STATE Routine was called from an initialization or termination function. E_NO_MATCH Character failed to match. E_NO_ROOM Menu is too large for its window. E_NOT_CONNECTED No items are connected to the menu. E_NOT_POSTED The menu has not been posted. E_NOT_SELECTABLE The designated item cannot be selected. E_POSTED The menu is already posted. E_REQUEST_DENIED The menu driver could not process the request. E_SYSTEM_ERROR System error occurred (see errno(3)). E_UNKNOWN_COMMAND The menu driver code saw an unknown request code.

NOTESThe header file <menu.h> automatically includes the header files <curses.h> and <eti.h>. In your library list, libmenu.a should be before libncurses.a; that is, you should say ‟−lmenu −lncurses”, not the other way around (which would give a link-error when using static libraries).

PORTABILITYThese routines emulate the System V menu library. They were not supported on Version 7 or BSD versions. The menu facility was documented in SVr4.2 in Character User Interface Programming (UNIX SVR4.2). It is not part of X/Open Curses. Aside from ncurses, there are few implementations: • systems based on SVr4 source code, e.g., Solaris. • NetBSD curses.

AUTHORSJuergen Pfeifer. Manual pages and adaptation for ncurses by Eric S. Raymond.

SEE ALSOcurses(3X) and related pages whose names begin ‟menu_” for detailed descriptions of the entry points. This describes ncurses version 6.2 (patch 20210508). 0

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