Параметры подключения к com-порту

void ShowLastError(void)
     {
   LPVOID lpMsgBuf;

   FormatMessage(
    FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
    NULL,
    GetLastError(),
    MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
    (LPTSTR) &lpMsgBuf,
    0,
    NULL
    );

    // Display the string.
    MessageBox( NULL,(char*) lpMsgBuf, "GetLastError", MB_OK|MB_ICONINFORMATION );

    // Free the buffer.
    LocalFree( lpMsgBuf );
     };

HANDLE hCom;

void __fastcall TForm1::Button1Click(TObject *Sender)
{
AnsiString com=this->Edit1->Text;
AnsiString Succesful("\tóñïåøíî");
AnsiString Failed   ("\tíå óñïåøíî");

DWORD T;
bool b;

_COMMTIMEOUTS ctmo;
COMMCONFIG cc;
DCB cdb;
DWORD size=sizeof(COMMCONFIG);

AnsiString str;

//îòêðûòèå ïîðòà
hCom=CreateFile(com.c_str(),GENERIC_READ|GENERIC_WRITE,FILE_SHARE_READ|FILE_SHARE_WRITE,0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0);

cc.dwSize=size;
cc.wVersion=1;
cc.dwProviderSubType=PST_RS232;
cc.dwProviderOffset=0;
cc.dwProviderSize=0;

//ïðîâåðêà íà óñïåøíîå îòêðûòèå
if (hCom==INVALID_HANDLE_VALUE)
   ShowLastError();
//÷òåíèå òåêóùèõ íàñòðîåê
if (!GetCommConfig(hCom,&cc,&size))
   ShowLastError();
//âûâîä äèàëîãîâîãî îêíà ñ òåêóùèìè ïàðàìåòðàìè
if (!CommConfigDialog(this->Edit1->Text.c_str(),this->Handle,&cc))
   ShowLastError();
//óñòàíîâêà íîâûõ ïàðàìåòðîâ
if (!SetCommConfig(hCom,&cc,size))
   ShowLastError();

//íàñòðîéêà òàéìàóòîâ
ctmo.ReadIntervalTimeout=0;
ctmo.ReadTotalTimeoutMultiplier=0;
ctmo.ReadTotalTimeoutConstant=100;
ctmo.WriteTotalTimeoutMultiplier=0;
ctmo.WriteTotalTimeoutConstant=100;
//óñòàíîâêà òàéìàóòîâ
SetCommTimeouts(hCom,&ctmo);
//âêëþ÷åíèå òàéìåðà
this->Timer1->Enabled=true;
}

// Отправка
DWORD b;
unsigned char s = {0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x03};
//?????? ??????? ? ????
WriteFile(hCom,&s,1,&b,0);

//Прием
char k;
DWORD b=0;
//÷òåíèå ñèìâîëà èç ïîðòà
ReadFile(hCom,&k,1,&b,0);
if (b)
        {
        //çàïèñü ñèìâîëà íà ýêðàí
        this->Memo1->Text=this->Memo1->Text+AnsiString(k);
        }