FIX: Error Using _ttoi64 with Non-Unicode Applications

MORE INFORMATION

_ttoi64 is a define that substitutes _atoi64 (if _UNICODE is not defined) or _wtoi64 if _UNICODE is defined. On line 481 of TCHAR.H is the following:

   #define _ttoi64     atoi64
				

this should be:

   #define _ttoi64     _atoi64
				

You may add the following code to your source file to correct the problem:

   // _ttoi64 is incorrectly defined in TCHAR.H, so you need to undefine
   // it and redefine it correctly to avoid a compile error when
   // building a non-Unicode version of your application.

      #ifdef _UNICODE
        #ifdef  _ttoi64
          #undef  _ttoi64
          #define _ttoi64 _wtoi64
        #endif
      #else
        #ifdef  _ttoi64
          #undef  _ttoi64
          #define _ttoi64 _atoi64
        #endif
      #endif