C / C++ / MFC

// strMessage is the text you want to send to the edit control
CString strRecvd;
m_cRichEdit.GetWindowText(strRecvd);
	
if(strRecvd.IsEmpty())
     m_wndMonitor.SetWindowText(strMessage);
else if(!strRecvd.Right(1).CompareNoCase("\n"))
    m_cRichEdit.SetWindowText(strRecvd + strMessage);	
else
     m_cRichEdit.SetWindowText(strRecvd +"\n"+ strMessage );
	
// Scroll the line down
m_cRichEdit.SetSel(-1, -1);
m_cRichEdit.SendMessage(EM_SCROLLCARET);

CFile file("C:\\foo.txt", CFile::modeRead);

file.Read(...)

CString strBuff;
CFile file;
if(file.Open(_T("anyfile.dat"),CFile::modeRead))
{
	//Declare a large buffer for reading the text
	char cBuf[2048];
	UINT uBytesRead;
					
	//Continue reading until no more data is read
	while(uBytesRead = file.Read(cBuf, sizeof(cBuf)-1))
	{
		//Null terminate after the last charcter
		cBuf[uBytesRead] = NULL;
		
		//add the buffer to the mapped CString
		strBuff += CString(cBuf);
	}
	// Make sure you close the file after reading		
	file.Close();

// Now do something with the string strBuff
...
}
else
{
// the file couldnt be opened get errors here
}

CFile myFile("myfile.txt", CFile::modeRead);  

UINT nFileLen = myFile.GetLength();           

const unsigned char* pTemp = new char[nFileLen+1];

// Clear the newly allocated memory to all zeros
memset(pTemp, 0, nFileLen+1);

// Load the file into the temporary buffer
myFile.Read(pTemp, nFileLen);

// Copy temp buffer into CString buff for easier handling

CString buff=pTemp;

// Iterate buffer and look for special characters
for(int i=0; i<buff.GetLength(); i++){
  // Look for a space character
  if(buff.GetAt(i)==32)
    nColumnCount++;
  // Look for carriage return and linefeed 
  else if(buff.GetAt(i)==13 && buff.GetAt(i+1)==10)
    nRowCount++;
}

// Free up memory used by temp buffer
delete[] pTemp;