- 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.
+
+ 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.
- E_POSTED
- The menu is already posted.
+ 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.
- E_BAD_STATE
- Routine was called from an initialization or termina-
- tion function.
- E_NO_ROOM
- Menu is too large for its window.
+
+ 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.
- E_NOT_POSTED
- The menu has not been posted.
- E_UNKNOWN_COMMAND
- The menu driver code saw an unknown request code.
+
+ 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_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_NOT_SELECTABLE
- The designated item cannot be selected.
+ E_NO_ROOM
+ Menu is too large for its window.
- E_NOT_CONNECTED
+ 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.
-
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-
+ 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.
+
+ 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 should say "-lmenu -lncurses", not the other way around (which
+ would give a link-error when using static libraries).
+
+ These routines emulate the System V menu library. They were not sup-
+ ported on Version 7 or BSD versions.
+ The menu facility was documented in SVr4.2 in CharacterUserInterface
+ Programming(UNIXSVR4.2).
+ It is not part of X/Open Curses.
+ Aside from ncurses, there are few implementations:
+ o systems based on SVr4 source code, e.g., Solaris.
+ o NetBSD curses.
+
+ curses(3x) and related pages whose names begin "menu_" for detailed
+ descriptions of the entry points.
+ This describes ncurses version 6.1 (patch 20190615).
+ menu(3x)