C / C++ / MFC

	DWORD					dwNumBytesRead ;
	DWORD					dwNumBytesWritten ;
	SECURITY_ATTRIBUTES		sa ;
	char					szInputBuffer[2] ;
	char					szString[80] ;
	int						iStringIndex = 0 ;
	int						lamp_warming_timer ;
	int						lamp_on_timer ;
	CString					text ;

	sa.nLength = sizeof(SECURITY_ATTRIBUTES) ;
	sa.lpSecurityDescriptor = NULL ;		// use default descriptor
	sa.bInheritHandle = true ;				// allow sub-threads to inherit handle

	// OPEN SERIAL PORT FOR COMMUNICATION
	m_hSerialPortHandle = CreateFile((LPCTSTR)m_csCommPortName,
		GENERIC_READ | GENERIC_WRITE,
		0,
		&sa,							// needed for inherit
		OPEN_EXISTING,
		0,
		0) ;

	if (m_hSerialPortHandle != INVALID_HANDLE_VALUE)
	{
		m_bOpen = true ;

		if (!GetCommState(m_hSerialPortHandle, &m_DCB))
		{
			text = "Serial port DCB failure." ;
			::SendMessage(m_hwndParent, UWM_UC_STATUS, (LONG)(LPCTSTR)text, 0) ;
		}
		else
		{
			// make sure we are using the correct settings
			m_DCB.BaudRate = CBR_9600 ;					// 9600 baud
			m_DCB.ByteSize = 8 ;						// 8 data bits
			m_DCB.Parity = NOPARITY ;					// no parity
			m_DCB.fParity = false ;						// parity checking off
			m_DCB.StopBits = ONESTOPBIT ;				// 1 stop bit
			m_DCB.fDtrControl = DTR_CONTROL_DISABLE ;	// no DTR input flow control
			m_DCB.fOutxCtsFlow = false ;				// don't monitor CTS
			m_DCB.fDsrSensitivity = false ;				// always read bytes received
			m_DCB.fTXContinueOnXoff = true ;			// don't wait for XONN / XOFF
			m_DCB.fOutX = false ;						// No XON / XOFF control
			m_DCB.fRtsControl = RTS_CONTROL_DISABLE ;	// don't use RTS comms control
			m_DCB.fAbortOnError = false ;				// don't quit on error

			// now apply the correct comm state to the device
			if (!SetCommState(m_hSerialPortHandle, &m_DCB))
			{
				text = "Serial port set com status failure." ;
				::SendMessage(m_hwndParent, UWM_UC_STATUS, (LONG)(LPCTSTR)text, 0) ;
			}
			// set the communication event flags
			if (!SetCommMask(m_hSerialPortHandle, EV_RXCHAR))
			{
				text = "Serial port set com mask failure." ;
				::SendMessage(m_hwndParent, UWM_UC_STATUS, (LONG)(LPCTSTR)text, 0) ;
			}
			COMMTIMEOUTS	timeouts ;

			// return immediately on reads
			// return after completion on writes
			timeouts.ReadIntervalTimeout = MAXDWORD ;
			timeouts.ReadTotalTimeoutConstant = 0 ;
			timeouts.ReadTotalTimeoutMultiplier = 0 ;
			timeouts.WriteTotalTimeoutConstant = 0 ;
			timeouts.WriteTotalTimeoutMultiplier = 0 ;

			SetCommTimeouts(m_hSerialPortHandle, &timeouts) ;
		}
	}
	else
	{
		text = "Unable to open serial port \"" + m_csCommPortName + "\"" ;
		::SendMessage(m_hwndParent, UWM_UC_STATUS, (LONG)(LPCTSTR)text, 0) ;
		m_bThreadDead = true ;
		return ;
	}
// read/write to port here using ReadFile() and WriteFile()

 // you need to add this public member method.
void CMyBar::SetWidth(const int nWidth)
{
  if (IsFloating())
   m_szFloat.cx = nWidth;
  else if (IsHorzDocked())
   m_szHorz.cx = nWidth;
  else
   m_szVert.cx = nWidth;

 m_pDockSite->DelayRecalcLayout();
}

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CFrameWnd* pFrame=(CFrameWnd*)AfxGetMainWnd();<br />
CTestView *p = (CTestView *)pFrame->GetActiveView();<br />
p->LoadImages(str);<br />
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