Re: problem with add old string to new string in edit box (MFC)

From:

"Tio" <tomjey@wp.pl>

Newsgroups:

microsoft.public.vc.mfc

Date:

14 Jun 2006 08:30:43 -0700

Message-ID:

<1150299043.062645.165970@y43g2000cwc.googlegroups.com>

I paste all code because I can't find mistake:

( some global variable in *.h )

LRESULT CIrda_controlDlg::OnNewValue(WPARAM wParam, LPARAM NotUsed)
{
    if (wParam != NULL)
    {
      CString* pStr = (CString*)wParam;
                int len = m_odbierane.GetWindowTextLength();
                m_odbierane.SetSel(len,len);
                m_odbierane.ReplaceSel(p4Str);

                delete pStr;

    };
    return 0;

}

void CIrda_controlDlg::OnOpenPort()
{
// OpenPort1();

}
void CIrda_controlDlg::OnSendPort()
{

    UpdateData(TRUE); // <-----edit box 2
    SetEvent (SendEvent);

}

void CIrda_controlDlg::OnReceivePort()
{
WaitCommEvent(m_hComm,&EventMask,&EventOverlapped);

}

void CIrda_controlDlg::ThreadStartFunc(void* arg)
{
    CIrda_controlDlg* pThis = (CIrda_controlDlg*)arg;
    pThis->WorkerThread();

}

void CIrda_controlDlg::WorkerThread()
{

    DWORD WaitResult;
    DWORD ReadDataLenght;
        Rbuf = new BYTE[100];
    Wbuf = new BYTE[100];

        ReadEvent=CreateEvent(NULL,TRUE,FALSE,NULL);
    WriteEvent=CreateEvent(NULL,TRUE,FALSE,NULL);
    EventEvent=CreateEvent(NULL,TRUE,FALSE,NULL);
    SendEvent=CreateEvent(NULL,TRUE,FALSE,NULL);
    StopEvent=CreateEvent(NULL,TRUE,FALSE,NULL);

        EventsArray[0]=ReadEvent;
        EventsArray[1]=WriteEvent;
    EventsArray[2]=EventEvent;
    EventsArray[3]=SendEvent;
    EventsArray[4]=StopEvent;

        ZeroMemory(&ReadOverlapped, sizeof(OVERLAPPED));
    ReadOverlapped.hEvent=ReadEvent;
    ZeroMemory(&WriteOverlapped, sizeof(OVERLAPPED));
    WriteOverlapped.hEvent=WriteEvent;
    ZeroMemory(&EventOverlapped, sizeof(OVERLAPPED));
    EventOverlapped.hEvent=EventEvent;

    GetCommMask(m_hComm,&EventMask);
    EventMask |= EV_RXCHAR;
    SetCommMask (m_hComm,EventMask);
int i;

    while (TRUE)
    {
    WaitResult= WaitForMultipleObjects(5,EventsArray,FALSE,INFINITE);

switch (WaitResult) {
       case WAIT_OBJECT_0: // receive from serial port
        {
            GetOverlappedResult
(m_hComm,&ReadOverlapped,&ReadDataLenght,FALSE);

                    CString str( (LPCTSTR) Rbuf, 1);
                    CString* pStr = new CString;
                    *pStr = _T(str);
                    PostMessage(WM_APP +1, (WPARAM)pStr, 0); //
---->my edit box

ReadFile(m_hComm,Rbuf,1,&ReadBytesNumber,&ReadOverlapped);
                    break;
        }
    case WAIT_OBJECT_0+1: //end of wirting
        {
                    ResetEvent (WriteEvent);
            break;
        }
    case WAIT_OBJECT_0+2: //event on port (when EventMask |=
EV_RXCHAR)
        {

                        COMSTAT comstat;
            DWORD Errors;
            ClearCommError(m_hComm,&Errors,&comstat);

                ReadFile(m_hComm,Rbuf,1,&ReadBytesNumber,&ReadOverlapped);

WaitCommEvent(m_hComm,&EventMask,&EventOverlapped);
                  break;
        }
    case WAIT_OBJECT_0+3: // sending to port

              {
                     str1 = _T(m_wysylane);

                          for( i = 0; i < str1.GetLength(); i++)
                          Wbuf[i] = static_cast<BYTE>(str1 [i]);

                          if
(WriteFile(m_hComm,Wbuf,str1.GetLength(),&WriteBytesNumber,&WriteOverlapped))
                             AfxMessageBox("ok");
                          else
                           ShowError();

                           ResetEvent (SendEvent);
               break;

              }

    case WAIT_OBJECT_0+4: // stop the thread
        {

                   ResetEvent(StopEvent);
               break;

        }
    }

    }

delete [] Wbuf;
delete [] Rbuf;
}

I toil over this very long time... :(