C / C++ / MFC

CPallini wrote:

Well, you may read a line at time or may move a pointer inside the buffer.

CString GetLine(CString sFileName, int nLineNumber)
{  
  CStdioFile Inputfile;
  CString sLine = _T("");
  CFileException FileExc;
  UINT nOpenFlags = CFile::modeRead;

  //OPen the file & load it into a CStdioFile object	
	if (!Inputfile.Open(sFileName, nOpenFlags, &FileExc)) {
		FileExc.ReportError();
		return "Error";
	}

	//Reading line by line
	while(Inputfile.ReadString(sLine) && nCount < nLineNumber){
		nCount++;
	}
	Inputfile.Close();
return sLine;
}

case WM_PAINT:
    {
        HDC hdc;
        PAINTSTRUCT ps;
        hdc = BeginPaint( hWnd, &ps );

        InvalidateRect(hWnd, NULL, TRUE);
        UpdateWindow(hWnd);

        EndPaint( hWnd, &ps );

    }
    return 0;
    break;

//RedrawWindow(hWnd, NULL, NULL,RDW_UPDATENOW|RDW_ALLCHILDREN);

Sarriss wrote:

but even without the WM_PAINT and using the updatewindow etc it still causes overlapping and no redrawing

Mark Salsbery
Microsoft MVP - Visual C++