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Text User Interface using comboot
---------------------------------
This is a menu system written by Murali Krishnan Ganapathy and ported
from OpenWatcom to gcc by HPA.
To configure the menus, you need to set up a menu configuration file
to have the menu items you desire, then build the menu system using
make. You can use either simple.c or complex.c as a starting point
for your own menu configuration file; then add the name with a .com
extension to the MENUS list in the Makefile.
The resulting code runs both under DOS as well as SYSLINUX. A trivial
memory allocation routine is implemented, to reduce the memory footprint
of this utility.
Features currently supported are:
* menu items,
* submenus,
* disabled items,
* checkboxes,
* invisible items (useful for dynamic menus), and
* Radio menus
The keys used are:
* Arrow Keys, PgUp, PgDn, Home, End Keys
* Space to switch state of a checkbox
* Enter to choose the item
* Escape to exit from it
Features
--------
This is a general purpose menu system implemented using only BIOS calls,
so it can be executed in a COMBOOT environment as well. It is highly
customizable. Some features include:
* Status line
Display any help information associated with each menu item.
* Window
Specify a window within which the menu system draws all its menu's.
It is upto the user to ensure that the menu's fit within the window.
* Positioning submenus
By default, each submenu is positioned just below the corresponding
entry of the parent menu. However, the user may position each menu
at a specific location of his choice. This is useful, when the menu's
have lots of options.
* Registering handlers for each menu item
This is mainly used for checkboxes, where selecting a checkbox, may
result in disabling another menu item, or de-selecting another
checkbox.
* Global Handler
This is called every time the menu is redrawn. The user can display
additional information (usually outside the window where the menu is
being displayed). See the complex.c for an example, where the global
handler is used to display the choices made so far.
Credits
-------
* The Watcom developers and Peter Anvin for figuring out an OS
independent startup code.
- Murali (gmurali+guicd@cs.uchicago.edu)
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