source: xtideuniversalbios/trunk/Assembly_Library/Inc/MenuEvents.inc@ 629

; Project name  :   Assembly Library
; 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.
;

;
; If user level idle processing is desired, %define this symbol and .IdleProcessing will be called.
; Otherwise, the code and structure entry will be omitted.  Note that INCLUDE_MENU_DIALOGS requires
; the idle processing (if that is the case, it is turned on here).
;
;%define MENUEVENT_IDLEPROCESSING_ENABLE
;

%ifdef INCLUDE_MENU_DIALOGS
%define MENUEVENT_IDLEPROCESSING_ENABLE
%endif

%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

%ifdef MENUEVENT_IDLEPROCESSING_ENABLE
    ; Parameters:
    ;   None
    ; See the definition of MENUEVENT_IDLEPROCESSING_ENABLE below.
    .IdleProcessing             resb    2
%define MENUEVENT_IdleProcessing                MENUEVENT.IdleProcessing
%endif

    ; 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 ; MENUEVENT_INLINE_OFFSETS

%endif ; MENUEVENTS_INC