C++ Wow64DisableWow64FsRedirection（）函数在Visual Studio窗口10中为64位编译时不工作

我在

Wow64DisableWow64FsRedirection（）

中遇到问题

当我在Visual Studio 2010中为64位平台编译时，它在窗口10中不工作，返回错误1

但是，当我为32位平台编译时，该函数在windows10中工作

typedef BOOL(__stdcall *tFSRED)(HMODULE );

HMODULE hKernel = LoadLibrary(_T("Kernel32.dll")); // Get Kernel module handle
if (hKernel == NULL)
{
    return 2;
}

tFSRED pFunc;
pFunc = (tFSRED) GetProcAddress(hKernel, "Wow64DisableWow64FsRedirection");
ret = pFunc(&oldValue);  // Turn the file the file system redirector off
if (ret == FALSE)
{
    _tprintf(_T("\nFile System Redirection could not be turned off. Reason: %d"), GetLastError());
    return 4;
}
// ret is always TRUE when compile through 32-bit platform
// but ret return FALSE when compile through 64-bit platform

在Visual Studio中，如果我为64位平台编译，那么在编译之后，如果我在

depends.EXE

中打开生成的EXE，它会在EXE前面显示64

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选择32位平台后，生成的EXE为32位。在我的例子中，该EXE可以工作，但我希望我的EXE是64位的，因此我选择64位平台，我得到一个64位的EXE，但它不能像我上面解释的那样工作。

WOW64仿真仅适用于在64位系统上运行的32位可执行文件。64位EXE不应尝试使用WOW64函数（除了

IsWow64Process（）

），因为EXE一开始不会在WOW64内部运行。这就是为什么在64位EXE中出现错误代码1（

error\u INVALID\u FUNCTION

）

因此，要么：

• ifdef在64位编译中跳过WOW64函数的代码：

  #ifndef _WIN64
  typedef BOOL (WINAPI *tFSDisable)(PVOID*);
  typedef BOOL (WINAPI *tFSRevert(PVOID);
  
  HMODULE hKernel = GetModuleHandle(_T("Kernel32"));
  tFSDisable pDisableFunc = (tFSDisable) GetProcAddress(hKernel, "Wow64DisableWow64FsRedirection");
  tFSRevert pRevertFunc = (tFSRevert) GetProcAddress(hKernel, "Wow64RevertWow64FsRedirection");
  
  PVOID oldValue;
  
  if ((pDisableFunc) && (pRevertFunc))
  {
      if (!pDisableFunc(&oldValue))  // Turn off the file system redirector
      {
          _tprintf(_T("\nFile System Redirection could not be turned off. Reason: %d"), GetLastError());
          return 4;
      }
  }
  #endif
  
  // do file system operations as needed...
  
  #ifndef _WIN64
  if ((pDisableFunc) && (pRevertFunc))
  {
      if (!pRevertFunc(oldValue))  // Restore the file system redirector
      {
          _tprintf(_T("\nFile System Redirection could not be restored. Reason: %d"), GetLastError());
          return 5;
      }
  }
  #endif
  

• 省略ifdef，仅当

  IsWow64Process（）

  报告当前进程实际上正在WOW64内部运行时才调用WOW64函数：

  typedef BOOL (WINAPI tW64P)(HANDLE, PBOOL);
  typedef BOOL (WINAPI *tFSDisable)(PVOID*);
  typedef BOOL (WINAPI *tFSRevert(PVOID);
  
  HMODULE hKernel = GetModuleHandle(_T("Kernel32"));
  
  tW64P pIsWow64Func = (tW64P) GetProcAddress(hKernel, "IsWow64Process");
  tFSDisable pDisableFunc = NULL;
  tFSRevert pRevertFunc = NULL;
  
  BOOL bIsWow64 = FALSE;
  if (pIsWow64Func)
  {
      pIsWow64Func(GetCurrentProcess(), &bIsWow64);
      if (bIsWow64)
      {
          pDisableFunc = (tFSDisable) GetProcAddress(hKernel, "Wow64DisableWow64FsRedirection");
          pRevertFunc = (tFSRevert) GetProcAddress(hKernel, "Wow64RevertWow64FsRedirection");
      }
  }
  
  PVOID oldValue;
  
  if ((pDisableFunc) && (pRevertFunc))
  {
      if (!pDisableFunc(&oldValue))  // Turn off the file system redirector
      {
          _tprintf(_T("\nFile System Redirection could not be turned off. Reason: %d"), GetLastError());
          return 4;
      }
  }
  
  // do file system operations as needed...
  
  if ((pDisableFunc) && (pRevertFunc))
  {
      if (!pRevertFunc(oldValue))  // Restore the file system redirector
      {
          _tprintf(_T("\nFile System Redirection could not be restored. Reason: %d"), GetLastError());
          return 5;
      }
  }
  

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将代码包含在问题正文中，以便您可以将其正确格式化为代码。