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;                                                  ;

;      EXAMPLE APPLICATION                         ;

;                                                  ;

;      Compile with FASM                           ;

;                                                  ;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

format binary as ""                     ; Binary file format without extension

use32                                   ; Tell compiler to use 32 bit instructions

org 0x0                                 ; the base address of code, always 0x0

; The header

db 'MENUET01'

dd 0x01

dd START

dd I_END

dd 0x100000

dd 0x7fff0

dd 0, 0

; The code area

include 'macros.inc'

START:                                  ; start of execution

        call    draw_window             ; draw the window

; After the window is drawn, it's practical to have the main loop.

; Events are distributed from here.

event_wait:

        mov     eax, 10                 ; function 10 : wait until event

        mcall                           ; event type is returned in eax

        cmp     eax, 1                  ; Event redraw request ?

        je      red                     ; Expl.: there has been activity on screen and

                                        ; parts of the applications has to be redrawn.

        cmp     eax, 2                  ; Event key in buffer ?

        je      key                     ; Expl.: User has pressed a key while the

                                        ; app is at the top of the window stack.

        cmp     eax, 3                  ; Event button in buffer ?

        je      button                  ; Expl.: User has pressed one of the

                                        ; applications buttons.

        jmp     event_wait

;  The next section reads the event and processes data.

red:                                    ; Redraw event handler

        call    draw_window             ; We call the window_draw function and

        jmp     event_wait              ; jump back to event_wait

key:                                    ; Keypress event handler

        mov     eax, 2                  ; The key is returned in ah. The key must be

        mcall                           ; read and cleared from the system queue.

        jmp     event_wait              ; Just read the key, ignore it and jump to event_wait.

button:                                 ; Buttonpress event handler

        mov     eax,17                  ; The button number defined in window_draw

        mcall                           ; is returned to ah.

        cmp     ah,1                    ; button id=1 ?

        jne     noclose

        mov     eax,-1                  ; Function -1 : close this program

        mcall

noclose:

        jmp     event_wait              ; This is for ignored events, useful at development

;  *********************************************

;  ******  WINDOW DEFINITIONS AND DRAW  ********

;  *********************************************

;

;  The static window parts are drawn in this function. The window canvas can

;  be accessed later from any parts of this code (thread) for displaying

;  processes or recorded data, for example.

;

;  The static parts *must* be placed within the fn 12 , ebx = 1 and ebx = 2.

draw_window:

        mov     eax, 12                 ; function 12: tell os about windowdraw

        mov     ebx, 1                  ; 1, start of draw

        mcall

        mov     eax, 0                  ; function 0 : define and draw window

        mov     ebx, 100 * 65536 + 300  ; [x start] *65536 + [x size]

        mov     ecx, 100 * 65536 + 120  ; [y start] *65536 + [y size]

        mov     edx, 0x14ffffff         ; color of work area RRGGBB

                                        ; 0x02000000 = window type 4 (fixed size, skinned window)

        mov     esi, 0x808899ff         ; color of grab bar  RRGGBB

                                        ; 0x80000000 = color glide

        mov     edi, title

        mcall

        mov     ebx, 25 * 65536 + 35    ; draw info text with function 4

        mov     ecx, 0x224466

        mov     edx, text

        mov     esi, 40

        mov     eax, 4

  .newline:                             ; text from the DATA AREA

        mcall

        add     ebx, 10

        add     edx, 40

        cmp     byte[edx], 0

        jne     .newline

        mov     eax, 12                 ; function 12:tell os about windowdraw

        mov     ebx, 2                  ; 2, end of draw

        mcall

        ret

;  *********************************************

;  *************   DATA AREA   *****************

;  *********************************************

;

; Data can be freely mixed with code to any parts of the image.

; Only the header information is required at the beginning of the image.

text    db  "It looks like you have just compiled    "

        db  "your first program for KolibriOS.       "

        db  "                                        "

        db  "Congratulations!                        ", 0

title   db  "Example application", 0

I_END:

; The area after I_END is free for use as the application memory,

; just avoid the stack.

;

; Application memory structure, according to the used header, 1 Mb.

;

; 0x00000   - Start of compiled image

; I_END     - End of compiled image

;

;           + Free for use in the application

;

; 0x7ff00   - Start of stack area

; 0x7fff0   - End of stack area                 - defined in the header

;

;           + Free for use in the application

;

; 0xFFFFF   - End of freely useable memory      - defined in the header

;

; All of the the areas can be modified within the application with a

; direct reference.

; For example, mov [0x80000],byte 1 moves a byte above the stack area.