Visual C++ and MFC Programming 2nd Edition

Visual C++ and MFC Fundamentals Chapter 15: Fundamental Controls

5. Set the Class name of the bottom custom control to Static and change its Caption to
   Burkina Faso


6. Add a CScrollBar Control Variable to the top control and name it m_ScrollRed (if
   you are using some versions of MSVC 7 and the class name is not selected as
   CScrollBar, you may have to type it; if you are using MSVC 6, you should only
   select the class name as CScrollBar)


7. Add a CScrollBar Control Variable to the second control from top and name it
   m_ScrollGreen


8. Add a CScrollBar Control Variable to the third control from top and name it
   m_ScrollBlue


9. A CStatic Control Variable (if you are using some versions of MSVC 7 and the
   class name is not selected as CStatic, you can to type it; if you are using MSVC 6,
   you should select the CStatic class name) to the bottom control and name it
   m_Country


10. To change the identifiers of the top three controls, access the OnInitDialog() event
    of the dialog box and call the SetDlgCtrlID() method for each control giving the
    1804 , 6255 , and 42 values respectively:

BOOL CIdentificationDlg::OnInitDialog()

{

CDialog::OnInitDialog();

// Set the icon for this dialog. The framework does this automatically

// when the application's main window is not a dialog

SetIcon(m_hIcon, TRUE); // Set big icon

SetIcon(m_hIcon, FALSE); // Set small icon

// TODO: Add extra initialization here

m_ScrollRed.SetDlgCtrlID(1804);

m_ScrollGreen.SetDlgCtrlID(6255);

m_ScrollBlue.SetDlgCtrlID(42);

return TRUE; // return TRUE unless you set the focus to a control

}

11. When the user clicks one of the scroll bars, we will need to know which one was
    clicked and display a message accordingly

Using the Messages button , generate the WM_HSCROLL message for the

dialog box to <Add> an OnHScroll event.

12. Implement it as follows:

void CIdentificationDlg::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)

{

// TODO: Add your message handler code here and/or call default

CFont font;

// Change the font of the label based on which scroll bar was clicked

if( pScrollBar->GetDlgCtrlID() == 1804 )

{

font.CreatePointFont(260, "Garamond");

m_Country.SetFont(&font);

}

else if( pScrollBar->GetDlgCtrlID() == 6255 )

{

font.CreatePointFont(220, "Arial");

m_Country.SetFont(&font);