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menu(3X)							      menu(3X)

NAME
       menu - curses extension for programming menus

SYNOPSIS
       #include <menu.h>

DESCRIPTION
       The 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	inter‐
       action 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	 func‐
       tions.  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 render‐
       ing 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 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_visible(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_pattern(3X)

       menu_request_by_name   menu_requestname(3X)
       menu_request_name      menu_requestname(3X)
       menu_spacing	      menu_spacing(3X)
       menu_sub		      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	      mitem_current(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_current(3X)
       top_row		      mitem_current(3X)
       unpost_menu	      menu_post(3X)

RETURN VALUE
       Routines 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_SYSTEM_ERROR
	    System error occurred (see errno).

       E_BAD_ARGUMENT
	    Routine detected an incorrect or out-of-range argument.

       E_POSTED
	    The menu is already posted.

       E_BAD_STATE
	    Routine was called from an initialization or termination function.

       E_NO_ROOM
	    Menu is too large for its window.

       E_NOT_POSTED
	    The menu has not been posted.

       E_UNKNOWN_COMMAND
	    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 descrip‐
       tions 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 libncurses.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 sup‐
       ported on Version 7 or BSD versions.

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

								      menu(3X)
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