Re: about serial port communication and new operator

thank you
i have done with that
i used the event mechanism and it is working fine

CString CMainFrame::ReadCharByChar()
{
    CString FromBoard;
    DWORD dwEventMask;
    DWORD dwSize=0;

    if(!SetCommMask(hCom, EV_RXCHAR)) /* Setting Event Type */
    {
        MessageBox("Can not set the event");
                CloseHandle(hCom);
        return FromBoard;
    }
    if(WaitCommEvent(hCom, &dwEventMask, NULL)) /* Waiting For Event to
Occur */
    {
        if(dwEventMask & EV_RXCHAR)
        {
            char szBuf;
            DWORD dwIncommingReadSize;
            do
            {
                if(ReadFile(hCom, &szBuf, 1, &dwIncommingReadSize, NULL) != 0)
                {
                    if(dwIncommingReadSize > 0)
                    {
                        dwSize += dwIncommingReadSize;
                        FromBoard += szBuf;
                    }
                }
                else
                {
                    MessageBox("ReadFile Failed");
                    unsigned long error = ::GetLastError();
                    break;
                }
                if(szBuf == '\'')
                    break;
            } while(dwIncommingReadSize > 0);
        }
    }
    else
    {
        MessageBox("Event never happened");
                CloseHandle(hCom);
        return FromBoard;
    }
    return FromBoard;
}

is it right?
but now i am facing another problem.
this is when the first time when i open the port and wait for event and
then user does some event on board like reseting at that time i get the
data.

but afterwards
i need to send character "s" to board and in replay he will send me the
data
for that i am issuing a WriteFile call
but then after when i try to read in which i set the event by

if(!SetCommMask(hCom, EV_RXCHAR))
and will wait till
if(WaitCommEvent(hCom, &dwEventMask, NULL))
returns but it never returns.

but i will first read the document told by Mr.Scott McPhillips
i think it will solve my problem.
million thanks to both of you.

Regards
Harshal Shete