Меню можно добавить в процессе создания окна, использовав при этом аргумент hMenu - дискриптор меню. Его возращает функция LoadMenu.

==>Begin cr_menu2.asm<==

.386

.model flat, stdcall

include win32.inc



extrn            CreateWindowExA:PROC

extrn            DefWindowProcA:PROC

extrn            DispatchMessageA:PROC

extrn            ExitProcess:PROC

extrn            GetMessageA:PROC

extrn            GetModuleHandleA:PROC

extrn            LoadCursorA:PROC

extrn            LoadIconA:PROC

extrn            LoadMenuA:PROC

extrn            MessageBoxA:PROC

extrn            PostQuitMessage:PROC

extrn            RegisterClassA:PROC

extrn            ShowWindow:PROC

extrn            TranslateMessage:PROC

extrn            UpdateWindow:PROC





IDM_1     EQU 1

IDM_2     EQU 2

IDM_EXIT  EQU 3

IDM_ABOUT EQU 4



.data



newhwnd          dd 0

hMenu            dd ?

msg              MSGSTRUCT   

wc               WNDCLASS    



hInst            dd 0



szMenuName       db 'MENU_1', 0

szTitleName      db 'Win32 Assembly Program', 0

szClassName      db 'ASMCLASS32',0

mb_message       db 'Win32 Assembler: Menu',0

mb_title         db 'About',0



.code

;-----------------------------------------------------------------------------

start:



        push    0

        call    GetModuleHandleA        ; get hmod (in eax)

        mov     [hInst], eax            ; hInstance is same as HMODULE

                                        ; in the Win32 world

; initialize the WndClass structure

        mov     [wc.clsStyle], CS_HREDRAW + CS_VREDRAW + CS_GLOBALCLASS

        mov     [wc.clsLpfnWndProc], offset WndProc

        mov     [wc.clsCbClsExtra], 0

        mov     [wc.clsCbWndExtra], 0



        mov     eax, [hInst]

        mov     [wc.clsHInstance], eax



        push    IDI_APPLICATION

        push    0

        call    LoadIconA

        mov     [wc.clsHIcon], eax



        push    IDC_ARROW

        push    0

        call    LoadCursorA

        mov     [wc.clsHCursor], eax



        push    offset szMenuName

        push    [hInst]

        call    LoadMenuA

        mov     [hMenu], eax



        mov     [wc.clsHbrBackground], COLOR_WINDOW + 1

        mov     dword ptr [wc.clsLpszMenuName], 0

        mov     dword ptr [wc.clsLpszClassName], offset szClassName



        push    offset wc

        call    RegisterClassA



        push    0                        ; lpParam

        push    [hInst]                  ; hInstance

        push    [hMenu]                  ; menu

        push    0                        ; parent hwnd

        push    CW_USEDEFAULT            ; height

        push    CW_USEDEFAULT            ; width

        push    CW_USEDEFAULT            ; y

        push    CW_USEDEFAULT            ; x

        push    WS_OVERLAPPEDWINDOW      ; Style

        push    offset szTitleName       ; Title string

        push    offset szClassName       ; Class name

        push    0                        ; extra style



        call    CreateWindowExA



        mov     [newhwnd], eax



        push    SW_SHOWNORMAL

        push    [newhwnd]

        call    ShowWindow



        push    [newhwnd]

        call    UpdateWindow



msg_loop:

        push    0

        push    0

        push    0

        push    offset msg

        call    GetMessageA



        cmp     ax, 0

        je      end_loop



        push    offset msg

        call    TranslateMessage



        push    offset msg

        call    DispatchMessageA



        jmp     msg_loop



end_loop:

        push    [msg.msWPARAM]

        call    ExitProcess





;-----------------------------------------------------------------------------

WndProc          proc uses ebx edi esi, hwnd:DWORD, wmsg:DWORD,\

                 wparam:DWORD, lparam:DWORD



        cmp     [wmsg], WM_DESTROY

        je      wmdestroy

        cmp     [wmsg], WM_COMMAND

        je      wmcommand



        push    [lparam]

        push    [wparam]

        push    [wmsg]

        push    [hwnd]

        call    DefWindowProcA

        jmp     finish



wmdestroy:

        push    0

        call    PostQuitMessage

        mov     eax, 0

        jmp     finish



wmcommand:

        mov     eax, [wparam]

        cmp     eax, IDM_ABOUT

        jne     wmnext

        push   0

        push   offset mb_title

        push   offset mb_message

        push   0

        call   MessageBoxA

wmnext:

        cmp     eax, IDM_EXIT

        je      wmdestroy



finish:

        ret

WndProc          endp

ends

end start

==>End of cr_menu2.asm<==