source: xtideuniversalbios/trunk/Assembly_Library/Inc/MenuEvents.inc@ 187

; File name     :   MenuEvents.inc
; Project name  :   Assembly Library
; Created date  :   13.7.2010
; Last update   :   18.10.2010
; Author        :   Tomi Tilli
; Description   :   Defines for Menu events send to the user.
%ifndef MENUEVENTS_INC
%define MENUEVENTS_INC

;--------------------------------------------------------------------
; Events to be processed in user implemented handler.
;   Common parameters for all events:
;       BX:         Menu event (anything from MENUEVENT struct)
;       SS:BP:      Menu library handle
;   Common return values for all events:
;       CF:         Set if event processed
;                   Cleared if event not processed
;   Corrupts registers:
;       All
;--------------------------------------------------------------------

;
; There are two ways to use MENUEVENT:
;
; 1. If the program needs two different menus, include the definition of the MENUEVENT structure below,
;    instantiate with members that point to the routines that make up the menu.
;
; 2. If the program needs only one menu, %define MENUEVENT_INLINE_OFFSETS before this include file,
;    and define (through EQU statements) each of the entry points as offsets from a base address.  
;    Entry points must be within 256 bytes of the base (only a byte is used to pass the offset).
;

%ifndef MENUEVENT_INLINE_OFFSETS

struc MENUEVENT
    ; Parameters:
    ;   DS:SI:      Ptr to MENUINIT struct to initialize
    ; Returns:
    ;   DS:SI:      Ptr to initialized MENUINIT struct
    .InitializeMenuinitFromDSSI     resb    2
%define MENUEVENT_InitializeMenuinitFromDSSI MENUEVENT.InitializeMenuinitFromDSSI

    ; Parameters:
    ;   None
    ; Returns:
    ;   CF:         Set to exit menu
    ;               Clear to cancel exit
    .ExitMenu                       resb    2
%define MENUEVENT_ExitMenu MENUEVENT.ExitMenu

    ; Parameters:
    ;   None
    .IdleProcessing                 resb    2
%define MENUEVENT_IdleProcessing MENUEVENT.IdleProcessing

    ; Parameters:
    ;   CX:         Index of new highlighted item
    ;   DX:         Index of previously highlighted item or NO_ITEM_HIGHLIGHTED
    .ItemHighlightedFromCX          resb    2
%define MENUEVENT_ItemHighlightedFromCX MENUEVENT.ItemHighlightedFromCX

    ; Parameters:
    ;   CX:         Index of selected item
    .ItemSelectedFromCX             resb    2
%define MENUEVENT_ItemSelectedFromCX MENUEVENT.ItemSelectedFromCX

    ; Parameters:
    ;   AL:         ASCII character for the key
    ;   AH:         Keyboard library scan code for the key
    .KeyStrokeInAX                  resb    2
%define MENUEVENT_KeyStrokeInAX MENUEVENT.KeyStrokeInAX

    ; Parameters:
    ;   CX:         Index of highlighted item
    ;   Cursor has been positioned to the beginning of first line
    .RefreshTitle                   resb    2
    .RefreshInformation             resb    2
%define MENUEVENT_RefreshTitle MENUEVENT.RefreshTitle
%define MENUEVENT_RefreshInformation MENUEVENT.RefreshInformation

    ; Parameters:
    ;   CX:         Index of item to refresh
    ;   Cursor has been positioned to the beginning of item line
    .RefreshItemFromCX              resb    2
%define MENUEVENT_RefreshItemFromCX MENUEVENT.RefreshItemFromCX
endstruc

%endif ; MENUEVENTS_INLINE_OFFSETS

%endif ; MENUEVENTS_INC