$ FileName "t.exe"
#include "$\inc\RTL64.inc"

Declare Function MessageBox Lib "user32.dll" Alias "MessageBoxA" (ByVal hwnd As Long, ByVal lpText As String, ByVal lpCaption As String, ByVal wType As Long) As Sys

zstring tit[]="64Bit OxygenBasic"
zstring msg[]="Hello World!"
'#show sys a=@messagebox
'#show addr rax,messagebox
sub  rsp,32
mov  r9,  0       
lea  r8,  tit   
lea  rdx, msg   
mov  rcx, 0
call messagebox       
add  rsp, 32

