C / C++ / MFC

<code>
       CFile f;
       if(f.open("FILENAME.TXT, CFile::modeRead))
       {
           DWORD dwFLen = f.GetLength();
           //this short will be used to get the file header
           USHORT usHeader;
           f.Read(&usHeader, sizeof(USHORT));

           //UNICODE text files starts with value 0xFEFF
           if(usHeader == 0xFEFF)
           {
               //we are going to load the text into a character array
               wchar_t * filetxt;
               
               //allocate a charaters array one for null terminator
               filetxt = new wchar_t[dwFLen + 1];

               //clear the filetxt array
               memset(filetxt, 0, sizeof(wchar_t) * (dwFLen + 1));
               f.Read(filetxt, dwFLen);

               //use API function rather than MFC to be able
               //to read UNICODE and ANSI at the same time
               ::SetDlgItemTextW(this->GetSafeHwnd(), IDC_EDIT1, filetxt);
           }
           else
           {
               //ANSI files does not contain any headers, so we should
               //reset the file pointer
               f.SeekToBegin();
           
               //we are going to load the text into a character array
               char * filetxt;
               
               //allocate a charaters array one for null terminator
               filetxt = new char[dwFLen + 1];

               //clear the filetxt array
               memset(filetxt, 0, sizeof(char) * (dwFLen + 1));
               f.Read(filetxt, dwFLen);

               //use API function rather than MFC to be able
               //to read UNICODE and ANSI at the same time
               ::SetDlgItemTextA(this->GetSafeHwnd(), IDC_EDIT1, filetxt);
           }
           f.Close();
       }
</code> 

if(openDlg.DoModal() == IDOK)
{
       CFile f;
       if(f.open(openDlg.GetPathName(), CFile::modeRead))
       .
       .
       .
}

struct FormatXML {
   tstring str_;
   explicit FormatXML(const tstring& str) : str_(str) { XMLSafeString(str_); }
   friend std::ostream& operator<<(std::ostream& s, const FormatXML& x)
   {
		s << x.str_;
		return s;
   }
};

<br />
tstring str = _T("My string with \"Quotes\".");<br />
myostream << FormatXML(str);<br />

<br />
CClientDC dc(this); //client dc of the edit's parent window<br />
GetDlgItem(IDC_EDIT1)->HideCaret(); //caret should not be drawn<br />
CWindowDC tempDC(GetDlgItem(IDC_EDIT1));  //window dc make a snapshot of the whole edit<br />
//getting the rectangle of the edit<br />
CRect rct;<br />
GetDlgItem(IDC_EDIT1)->GetWindowRect(rct);<br />
ScreenToClient(rct); //convert to parent's coordinate<br />
<br />
//darw the edit control's image on the dc<br />
dc.BitBlt(rct.left, rct.top, rct.Width(), rct.Height(), &tempDC, 0, 0, SRCCOPY);<br />
GetDlgItem(IDC_EDIT1)->ShowCaret(); //re-show the caret<br />