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how select the text In MFC

Discussion in 'Meet and Greet' started by sarfarazfarru10@gmai, Feb 25, 2011.

  1. sarfarazfarru10@gmai

    sarfarazfarru10@gmai New Member

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    hi
    i am very new to MFC. trying to select the particular text of the client area.i have use
    OnLButtonDown and OnLButtonup had two points .i am not able change background color of particular text.provid me some example .....
    i am not using the editview here is my


    Code:
    CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct){
    HANDLE hfile;
    hfile=CreateFile(_T("\\\\.\\C:"),GENERIC_READ,FILE_SHARE_WRITE|FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
    if(hfile == INVALID_HANDLE_VALUE)
    {
    MessageBox(_T("Fail to open the drive"),_T(" "),MB_OK | MB_ICONERROR);
    return -1;
    }
    m_lpData = new BYTE[1024];
    DWORD dwNumberofByteToRead =0;
    if(!ReadFile(hfile,m_lpData,1024,&dwNumberofByteToRead,NULL))
    {
    MessageBox(_T("Fail to read the drive"),_T(" "),MB_OK | MB_ICONERROR);
    return -2
    }
    and onpaintcode:
    
    
    {
    CPaintDC dc(this); // device context for painting
    CString szFormatted;
    CRect rect;
    CDC m_pDC;
    CBrush m_Brush,m_brush1;
    GetClientRect(&rect);
    m_pDC.CreateCompatibleDC(&dc);
    m_bitmap.CreateBitmap (rect.Width(), rect.Height(),0,0,NULL);
    m_pDC.SelectObject(&m_bitmap);
    m_Brush.CreateSolidBrush(RGB(255,255,255));
    m_pDC.SelectObject(&m_Brush);
    m_pDC.FillRect(rect,&m_Brush);
    TRACE("\n Left: %d, Top: %d Right: %d Bottom: %d",rect.left, rect.top, rect.right, rect.bottom);
    //TRACE("\n Start Line: %d End Line: %d", rect.top /cyChar, rect.bottom / cyChar);
    m_pDC.SelectObject(GetStockObject(OEM_FIXED_FONT ));
    memset (&si, 0, sizeof (SCROLLINFO));
    si.cbSize = sizeof (SCROLLINFO);
    si.fMask = SIF_POS | SIF_PAGE |SIF_RANGE;
    
    GetScrollInfo(SB_VERT, &si, SIF_POS | SIF_PAGE | SIF_RANGE);
    
    m_nVScrollBarPos = si.nPos;
    GetScrollInfo(SB_HORZ, &si, SIF_POS | SIF_PAGE |SIF_RANGE);
    m_nHScrollBarPos = si.nPos;
    
    int Start = rect.top / m_cyChar;
    int End = rect.bottom / m_cyChar;
    
    TRACE ("\nStart: %u, End: %u YCord: %d", Start, End);
    
    for(int i = Start; i<= End; i++)
    {
    GetFormattedData(m_lpData, (i + m_nVScrollBarPos )*BYTE_OFFSET, szFormatted);
    m_pDC.TextOut((1 - m_nHScrollBarPos) * m_cxChar , i * m_cyChar, szFormatted);
    }
    m_bitmap.DeleteObject();
    dc.BitBlt(rect.left,rect.top,rect.Width(),rect.Height(),&m_pDC,rect.left,rect.top,SRCCOPY);
    CPen pen;
    dc.SelectObject(GetStockObject(NULL_BRUSH));
    dc.Rectangle(start_pt.x, start_pt.y, end_pt.x, end_pt.y);
    rect.SetRect(start_pt,end_pt);
    ReleaseDC(&m_pDC);
    }
     
    Last edited by a moderator: Feb 25, 2011

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