SYSTEMTIME st;
GetLocalTime(&st);
char fname[255];
wsprintfA(fname, "./PacketDump_%d_%d_%d_%d_%d_%d.txt", st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond);
HANDLE outfile = CreateFile(fname, GENERIC_WRITE, FILE_SHARE_READ, 0, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
if (outfile == INVALID_HANDLE_VALUE)
{
  MessageBoxA(NULL, "Unable to open file.", "file Error", MB_OK|MB_ICONSTOP);
  use_dll = false;
}
CloseHandle(outfile);