.386
.model flat, stdcall
option casemap :none
include \masm32\include\windows.inc
include \masm32\include\masm32.inc
include \masm32\include\gdi32.inc
include \masm32\include\user32.inc
include \masm32\include\kernel32.inc
include \masm32\include\Comctl32.inc
include \masm32\include\comdlg32.inc
include \masm32\include\shell32.inc
include \masm32\include\oleaut32.inc
includelib \masm32\lib\gdi32.lib
includelib \masm32\lib\user32.lib
includelib \masm32\lib\kernel32.lib
includelib \masm32\lib\Comctl32.lib
includelib \masm32\lib\comdlg32.lib
includelib \masm32\lib\shell32.lib
includelib \masm32\lib\oleaut32.lib
.data
buffer db 32 dup(0)
prefix db "%d", 13, 10, "%d", 0
.code
start:
mov eax, 123456
mov ebx, 654321
sub esp, 4
mov [esp], eax  ; push eax
sub esp, 4
mov [esp], ebx  ; push ebx
mov eax, 654321
mov ebx, 123456
invoke wsprintf, ADDR buffer, ADDR prefix, eax, ebx
invoke MessageBox, 0, ADDR buffer, 0,0
mov ebx, [esp]  ; pop ebx
add esp, 4
mov eax, [esp]  ; pop eax
add esp, 4
invoke wsprintf, ADDR buffer, ADDR prefix, eax, ebx
invoke MessageBox, 0, ADDR buffer, 0,0
ret
end start