C / C++ / MFC

// m_pict is a CPictureSSL
void CPictureCtrlSSL::OnPaint()
{
	CPaintDC dc(this);
	if (m_pict) {
		CRect rcClient;
		GetClientRect(&rcClient);
		CRect rcImage(CPoint(0,0),m_pict.GetImageSize());
		CRect rc;
		rc.IntersectRect(&rcImage, &rcClient);
		m_pict.Render(&dc, rc);
	}
}

// m_spIPicture is an ATL smart pointer to IPicture
BOOL CPictureSSL::Render(CDC* pDC, CRect rc, LPCRECT prcMFBounds) const
{
   ASSERT(pDC);

   if (rc.IsRectNull()) {
      CSize sz = GetImageSize(pDC);
      rc.right = sz.cx;
      rc.bottom = sz.cy;
   }
   long hmWidth,hmHeight; // HIMETRIC units
   GetHIMETRICSize(hmWidth, hmHeight);
   m_spIPicture->Render(*pDC, rc.left, rc.top, rc.Width(), rc.Height(),
      0, hmHeight, hmWidth, -hmHeight, prcMFBounds);

   return TRUE;
}

CDocument * pDoc = GetDocument();AfxBeginThread(RxDataProc, pDoc);

UINT RxDataProc(LPVOID param){	
CLOPCDoc* pDoc = (CLOPCDoc*)param;	
ASSERT_VALID(pDoc);	
pDoc->LoadConnParameters(); // Get connection parameters from MainFrame and store them locally in DOC		
bool running = true;	
while(running)	
{	
if(int result = ::WaitForSingleObject(g_evThreadEnd.m_hObject, 0) == WAIT_OBJECT_0)running = false;		
else		
{			
try{						
if ( !myFile.Open( pszFileName, CFile::modeCreate|CFile::modeNoTruncate|CFile::modeReadWrite ), &fileException ){
TRACE( "Can't open file %s, error = %u\n", pszFileName, fileException.m_cause );				
}								
CSerialPort port;				
port.Open(pDoc->nComPort_DU, pDoc->nBps_DU, (CSerialPort::Parity)pDoc->nParity_DU, 
pDoc->nDataBits_DU,(CSerialPort::StopBits)pDoc->nStopBits_DU, 
(CSerialPort::FlowControl)pDoc->nFlowControl_DU);// read from port				
char sRxBuf[23];				
DWORD dwRead = port.Read(sRxBuf, 23);				
UNUSED(dwRead);				
myFile.SeekToEnd();				
myFile.Write( sRxBuf, sizeof( sRxBuf ) ); 				
myFile.Close();								
port.Close();					
}
catch(CSerialException* pEx){				
TRACE(_T("Handle Exception, Message: %s\n"), pEx->GetErrorMessage());		
pEx->Delete();			
}		
}	
}	
return 0;
}