Copyright (c) 1999
Brett Lymn - blymn (at] baea.com.au, brett_lymn (at] yahoo.com.au
This code is donated to The NetBSD Foundation by the author.
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.Dd September 10, 1999 .Dt MENUS 3 .Os .Sh NAME .Nm menu .Nd menu library .Sh LIBRARY .Lb libmenu .Sh SYNOPSIS .Fd #include <menu.h> .Sh DESCRIPTION The .Xr menu 3 provides a terminal independent menu system using the .Xr curses 3 library. Before using the .Xr menu 3 functions the terminal must be set up by .Xr curses 3 using the .Fn initscr function or similar. Programs using .Xr menu 3 functions must be linked with the .Xr curses 3 library.
p The .Xr menu 3 library provides facilties for defining menu items, placing a menu on the terminal screen, assign pre and post change operations and setting the attributes of both the menu and it's items. .Sh Defining default attributes for menus and items The .Xr menu 3 library allows any settable attribute or option of both the menu and item objects to be defined such that any new menu or item automatically inherits the value as default. Setting the default value will not affect any item or menu that has already been created but will be applied to subsequent objects. To set the default attribute or option the set routine is passed a NULL pointer in the item or menu parameter when calling the set routine. The current default value can be retrieved by calling the get routine with a NULL pointer for the item or menu parameter.
p l -tag -width item_description -compact t function name manual page name t current_item .Xr menu_item_current 3 t free_item .Xr menu_item_new 3 t free_menu .Xr menu_new 3 t item_count .Xr menu_items 3 t item_description .Xr menu_item_name 3 t item_index .Xr menu_item_current 3 t item_init .Xr menu_hook 3 t item_name .Xr menu_item_name 3 t item_opts .Xr menu_item_opts 3 t item_opts_off .Xr menu_item_opts 3 t item_opts_on .Xr menu_item_opts 3 t item_term .Xr menu_hook 3 t item_userptr .Xr menu_item_userptr 3 t item_value .Xr menu_item_value 3 t item_visible .Xr menu_item_visible 3 t menu_back .Xr menu_attributes 3 t menu_driver .Xr menu_driver 3 t menu_fore .Xr menu_attributes 3 t menu_format .Xr menu_format 3 t menu_grey .Xr menu_attributes 3 t menu_init .Xr menu_hook 3 t menu_items .Xr menu_items 3 t menu_mark .Xr menu_mark 3 t menu_opts .Xr menu_opts 3 t menu_opts_off .Xr menu_opts 3 t menu_opts_on .Xr menu_opts 3 t menu_pad .Xr menu_attributes 3 t menu_pattern .Xr menu_pattern 3 t menu_sub .Xr menu_win 3 t menu_term .Xr menu_hook 3 t menu_unmark .Xr menu_mark 3 t menu_userptr .Xr menu_userptr 3 t men_win .Xr menu_win 3 t new_item .Xr menu_item_new 3 t new_menu .Xr menu_new 3 t pos_menu_cursor .Xr menu_cursor 3 t post_menu .Xr menu_post 3 t scale_window .Xr menu_win 3 t set_current_item .Xr menu_item_current 3 t set_item_init .Xr menu_hook 3 t set_item_opts .Xr menu_item_opts 3 t set_item_term .Xr menu_hook 3 t set_item_userptr .Xr menu_item_userptr 3 t set_item_value .Xr menu_item_value 3 t set_menu_back .Xr menu_attributes 3 t set_menu_fore .Xr menu_attributes 3 t set_menu_format .Xr menu_format 3 t set_menu_grey .Xr menu_attributes 3 t set_menu_init .Xr menu_hook 3 t set_menu_items .Xr menu_items 3 t set_menu_mark .Xr menu_mark 3 t set_menu_opts .Xr menu_opts 3 t set_menu_pad .Xr menu_attributes 3 t set_menu_pattern .Xr menu_pattern 3 t set_menu_sub .Xr menu_win 3 t set_menu_term .Xr menu_hook 3 t set_menu_unmark .Xr menu_mark 3 t set_menu_userptr .Xr menu_userptr 3 t set_menu_win .Xr menu_win 3 t set_top_row .Xr menu_item_current 3 t top_row .Xr menu_item_current 3 t unpost_menu .Xr menu_post 3 .El .Sh RETURN VALUES Any function returning a string pointer will return NULL if an error occurs. Functions returning an integer will return one of the following:
p l -tag -width E_UNKNOWN_COMMAND -compact t Er E_OK The function was successful. t Er E_SYSTEM_ERROR There was a system error during the call. t Er E_BAD_ARGUMENT One or more of the arguments passed to the function was incorrect. t Er E_POSTED The menu is already posted. t Er E_CONNECTED An item was already connected to a menu. t Er E_BAD_STATE The function was called from within an initialisation or termination routine. t Er E_NO_ROOM The menu does not fit within the subwindow. t Er E_NOT_POSTED The menu is not posted. t Er E_UNKNOWN_COMMAND The menu driver does not recognise the request passed to it. t Er E_NO_MATCH The character search failed to find a match. t Er E_NOT_SELECTABLE The item could not be selected. t Er E_NOT_CONNECTED The item is not connected to a menu. t Er E_REQUEST_DENIED The menu driver could not process the request. .El .Sh SEE ALSO .Xr curses 3 , .Xr menu_attributes 3 , .Xr menu_cursor 3 , .Xr menu_driver 3 , .Xr menu_format 3 , .Xr menu_hook 3 , .Xr menu_item_current 3 , .Xr menu_item_name 3 , .Xr menu_item_new 3 , .Xr menu_item_opts 3 , .Xr menu_item_userptr 3 , .Xr menu_item_value 3 , .Xr menu_item_visible 3 , .Xr menu_items 3 , .Xr menu_mark 3 , .Xr menu_new 3 , .Xr menu_opts 3 , .Xr menu_pattern 3 , .Xr menu_post 3 , .Xr menu_userptr 3 , .Xr menu_win 3
Indexes created Wed Oct 15 16:09:53 GMT 2025