char szCodedPort[20];
sprintf(szCodedPort, "\\.\COM%d",3); //manually set for testing purposes
HANDLE fileHandle =  CreateFileA(szCodedPort,
    GENERIC_READ | GENERIC_WRITE,
    FILE_SHARE_READ | FILE_SHARE_WRITE,
    NULL,
    OPEN_EXISTING,
    FILE_ATTRIBUTE_NORMAL, NULL);

fd_set readfds;
int fd;
fd = _open_osfhandle((long)fileHandle, O_RDONLY);
FD_ZERO(&readfds);
FD_SET(fd, &readfds);

WSAData WSA_Data;
WSAStartup(MAKEWORD(2,2),&WSA_Data);

res = select(fd,&readfds,NULL,NULL, &waitlen);

WSACleanup();