simpler version without boost

crts_caller

#pragma once
/*
 *      Copyright (C) 2015 Team Kodi
 *      http://kodi.tv
 *
 *  This Program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  This Program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with XBMC; see the file COPYING.  If not, see
 *  <http://www.gnu.org/licenses/>.
 *
 */

/**
 * \file win32\crts_caller.h
 * \brief Declares crts_caller class for calling same function for all loaded CRTs.
 * \author Karlson2k
 */

#include <string>
#include <vector>

#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN 1
#endif // WIN32_LEAN_AND_MEAN
#include <Windows.h>

namespace win32_utils
{

  template <typename ret_type, typename... param_types>
  typename ret_type call_in_all_crts(const char* func_name, ret_type(*cur_fnc_ptr) (param_types...), param_types... params)
  {
    std::vector<std::wstring> s_crtNames
    {
      L"msvcrt.dll",   // Visual Studio 6.0 / MinGW[-w64]
      L"msvcr70.dll",  // Visual Studio 2002
      L"msvcr71.dll",  // Visual Studio 2003
      L"msvcr80.dll",  // Visual Studio 2005
      L"msvcr90.dll",  // Visual Studio 2008
#ifdef _DEBUG
      L"msvcr90d.dll", // Visual Studio 2008 (debug)
#endif
      L"msvcr100.dll", // Visual Studio 2010
#ifdef _DEBUG
      L"msvcr100d.dll",// Visual Studio 2010 (debug)
#endif
      L"msvcr110.dll", // Visual Studio 2012
#ifdef _DEBUG
      L"msvcr110d.dll",// Visual Studio 2012 (debug)
#endif
      L"msvcr120.dll", // Visual Studio 2013
#ifdef _DEBUG
      L"msvcr120d.dll",// Visual Studio 2013 (debug)
#endif
    };

    for (auto& crtName : s_crtNames)
    {
      HMODULE hCrt = NULL;
      if (!GetModuleHandleExW(0, crtName.c_str(), &hCrt) || hCrt == NULL) // Flag 0 ensures that CRL will not be unloaded while we are using it here
        continue; // Module not loaded

      auto func_ptr = reinterpret_cast<decltype(cur_fnc_ptr)>(GetProcAddress(hCrt, func_name));
      
      if (func_ptr != NULL)
      {
        (void)func_ptr(params...); // ignoring result of function call
      }
      
      FreeLibrary(hCrt); // this CRT will not be used
    }

    return cur_fnc_ptr(params...); // return result of calling process's CRT function
  }
}

//call as
win32_utils::call_in_all_crts("_configthreadlocale", _configthreadlocale, param)