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'\" t
.TH menus 3X ""
.SH NAME
\fBmenus\fR - curses extension for programming menus
.SH SYNOPSIS
\fB#include <menu.h>\fR
.br
.SH DESCRIPTION
The \fBmenus\fR 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 \fBmenus\fR library uses the \fBcurses\fR libraries, and a curses
initialization routine such as \fBinitscr\fR must be called before using any of
these functions. To use the \Bmenus\fR library, link with the options
\fB-lmenu -lcurses\fR.
.SS Current Default Values for Item Attributes
The \fBmenus\fR library maintains a default value for item attributes. You can
get or set this default by calling the appropriate \fBget_\fR or \fBset_\fR
routine with a \fBNULL\fR item pointer. Changing this default with a
\fBset_\fR function affects future item creations, but does not change the
rendering of items already created.
.SS Routine Name Index
The following table lists each \fBmenu\fR routine and the name of
the manual page on which it is described.
.nf
\fBcurses\fR Routine Name Manual Page Name
_________________________________________
\fBcurrent_item\fR mitem_current(3X)
\fBfree_item\fR mitem_new(3X)
\fBfree_menu\fR menu_new(3X)
\fBitem_count\fR menu_items(3X)
\fBitem_description\fR mitem_name(3X)
\fBitem_index\fR mitem_current(3X)
\fBitem_init\fR menu_hook(3X)
\fBitem_name\fR mitem_name(3X)
\fBitem_opts\fR mitem_opts(3X)
\fBitem_opts_off\fR mitem_opts(3X)
\fBitem_opts_on\fR mitem_opts(3X)
\fBitem_term\fR menu_hook(3X)
\fBitem_userptr\fR mitem_userptr(3X)
\fBitem_value\fR mitem_value(3X)
\fBitem_visible\fR mitem_visible(3X)
\fBmenu_back\fR menu_attribs(3X)
\fBmenu_driver\fR menu_driver(3X)
\fBmenu_fore\fR menu_fore(3X)
\fBmenu_format\fR menu_format(3X)
\fBmenu_grey\fR menu_attribs(3X)
\fBmenu_init\fR menu_hook(3X)
\fBmenu_items\fR menu_items(3X)
\fBmenu_mark\fR menu_mark(3X)
\fBmenu_opts\fR menu_opts(3X)
\fBmenu_opts_off\fR menu_opts(3X)
\fBmenu_opts_on\fR menu_opts(3X)
\fBmenu_pad\fR menu_attribs(3X)
\fBmenu_pattern\fR menu_pattern(3X)
\fBmenu_sub\fR menu_win(3X)
\fBmenu_term\fR menu_hook(3X)
\fBmenu_userptr\fR menu_userptr(3X)
\fBmenu_win\fR menu_win(3X)
\fBnew_item\fR mitem_new(3X)
\fBnew_menu\fR menu_new(3X)
\fBpos_menu_cursor\fR menu_cursor(3X)
\fBpost_menu\fR menu_post(3X)
\fBscale_menu\fR menu_win(3X)
\fBset_current_item\fR menu_current_item(3X)
\fBset_item_init\fR menu_hook(3X)
\fBset_item_opts\fR mitem_opts(3X)
\fBset_item_term\fR menu_hook(3X)
\fBset_item_userptr\fR mitem_userptr(3X)
\fBset_item_value\fR mitem_value(3X)
\fBset_menu_back\fR menu_attribs(3X)
\fBset_menu_fore\fR menu_attribs(3X)
\fBset_menu_format\fR menu_format(3X)
\fBset_menu_grey\fR menu_attribs(3X)
\fBset_menu_init\fR menu_hook(3X)
\fBset_menu_items\fR menu_items(3X)
\fBset_menu_mark\fR menu_mark(3X)
\fBset_menu_opts\fR mitem_opts(3X)
\fBset_menu_pad\fR menu_attribs(3X)
\fBset_menu_pattern\fR menu_pattern(3X)
\fBset_menu_sub\fR menu_win(3X)
\fBset_menu_term\fR menu_hook(3X)
\fBset_menu_userptr\fR menu_userptr(3X)
\fBset_menu_win\fR menu_win(3X)
\fBset_top_row\fR mitem_current(3X)
\fBtop_row\fR mitem_current(3X)
\fBunpost_menu\fR menu_post(3X)
.fi
.SH RETURN VALUE
Routines that return pointers return \fBNULL\fR on error. Routines that return
an integer return one of the following error codes:
.TP 5
\fBE_OK\fR
The routine succeeded.
.TP 5
\fBE_SYSTEM_ERROR\fR
System error occurred (see \fBerrno\fR).
.TP 5
\fBE_BAD_ARGUMENT\fR
Routine detected an incorrect or out-of-range argument.
.TP 5
\fBE_POSTED\fR
The menu is already posted.
.TP 5
\fBE_BAD_STATE\fR
Routine was called from an initialization or termination function.
.TP 5
\fBE_NO_ROOM\fR
Menu is too large for its window.
.TP 5
\fBE_NOT_POSTED\fR
The menu has not been posted.
.TP 5
\fBE_UNKNOWN_COMMAND\fR
The menu driver code saw an unknown request code.
.TP 5
\fBE_NO_MATCH\fR
Character failed to match.
.TP 5
\fBE_NOT_SELECTABLE\fR
The designated item cannot be selected.
.TP 5
\fBE_NOT_CONNECTED\fR
No items are connected to the menu.
.TP 5
\fBE_REQUEST_DENIED\fR
The menu driver could not process the request.
.SH SEE ALSO
\fBcurses\fR(3X) and 3X pages whose names begin "menu_" for detailed
descriptions of the entry points.
.SH NOTES
The header file \fB<menu.h>\fR automatically includes the header files
\fB<curses.h>\fR and \fB<eti.h>\fR.
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 \fBld\fR(1) and many other linkers).
.SH PORTABILITY
These routines emulate the System V menu library. They were not supported on
Version 7 or BSD versions.
.SH AUTHORS
Juergen Pfeifer. Manual pages and adaptation for ncurses by Eric
S. Raymond.
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