Hi,
I've posted earlier a question regarding the call to GetCommState.
Here is the code for the function.
The problem is that GetCommState always returns false!!
Why?

void Open()
{
// the DCB and COMMTIMEOUTS structure are declare a __value struct
   DCB *dcbCommPort = __nogc new DCB();
    COMMTIMEOUTS *ctoCommPort = __nogc new COMMTIMEOUTS();   
    // OPEN THE COMM PORT.
    hComm = CreateFile("LPT1",GENERIC_READ | GENERIC_WRITE,0, 0,OPEN_EXISTING,0,0);
    // IF THE PORT CANNOT BE OPENED, BAIL OUT.
    if(hComm == INVALID_HANDLE_VALUE)
    {
       throw(new ApplicationException("Comm Port Can Not Be Opened"));
    }
    // SET THE COMM TIMEOUTS.
    GetCommTimeouts(hComm,ctoCommPort);
    ctoCommPort->ReadTotalTimeoutConstant = ReadTimeout;
    ctoCommPort->ReadTotalTimeoutMultiplier = 0;
    ctoCommPort->WriteTotalTimeoutMultiplier = 0;
    ctoCommPort->WriteTotalTimeoutConstant = 0;  
    SetCommTimeouts(hComm,ctoCommPort);
       
    // SET BAUD RATE, PARITY, WORD SIZE, AND STOP BITS.
    GetCommState(hComm, dcbCommPort);
    dcbCommPort->BaudRate=BaudRate;
    dcbCommPort->flags=0;
    //dcb.fBinary=1;
    dcbCommPort->flags|=1;
    if (Parity>0)
    {
    dcbCommPort->flags|=2;
   }
   dcbCommPort->Parity=Parity;
    dcbCommPort->ByteSize=ByteSize;
    dcbCommPort->StopBits=StopBits;
    if (!SetCommState(hComm, dcbCommPort))  // always returns false
    {
        throw(new ApplicationException("Comm Port Can Not Be Opened"));
   }
    Opened = true;
}

Thanks!