/*
0) extern "C" __declspec(dllexport)
   - - - - - - - - - - - - - - - - -
1) int (*_rr)();
2) HMODULE  hDll = 0;
3) hDll = LoadLibrary("dll/for.dll");
4) _rr = (int(*)())GetProcAddress(hDll, "_rr");
5) FreeLibrary(hDll);
*/