.386
.model flat,stdcall
option casemap:none
include \masm32\include\windows.inc
include \masm32\include\user32.inc
include \masm32\include\kernel32.inc
includelib \masm32\lib\user32.lib
includelib \masm32\lib\kernel32.lib  
.data
  sz1 db "..",0
  sz2 db ",,,",0
  szDllName db "user32.dll",0
  szMessageBoxA db "MessageBoxA",0
  hFile HWND ?
.code
myproc proc
  invoke MessageBox,0,addr sz1,addr sz2,0
  ;mov hFile,eax
  mov eax,[dwOld_AddressOfEntryPoint]
  ;mov eax,hFile
  mov [dwOld_AddressOfEntryPoint],eax
  xor eax,eax
  ret
myproc endp
myStart:
        call nStart
nStart:      
        ret
;变量定义
        dwOld_AddressOfEntryPoint        dd        0
        dwOld_ImageBase                        dd        0
        szTitleMsg                        db        "关闭提示",0       
        szContent                        db        "是否继续？",0
        MessageBoxAddr                        dd        0
      
myEnd:
start:
  call myproc
end start

代码上面的,出现的问题
dwOld_AddressOfEntryPoint 读地址错误!!
在程序结构不变化前提下,怎么才能正常使用dwOld_AddressOfEntryPoint这个变量??

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