Visual C++ and MFC Programming 2nd Edition

Visual C++ and MFC Fundamentals Chapter 12: Dialog-Based Windows

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

MessageBox("In order to dismiss this dialog box, "

"click either OK or Cancel");

// CDialog::OnClose();

}

16. Execute the application. Display the Dynamic Objects dialog and click its system
    Close button to close


17. Close the dialog box using either the OK or the Cancel buttons. Also, close the
    application and return to MSVC


18. Open the Geometry application. If you do not have it, open the Geometry1
    application that accompanies this book


19. As done for the CDynamicDlg class above, add a WM_PAINT message for the
    CQuadrilateral, the CCircular, and the CGeome3D classes


20. Save all

13.2.3..Control-Related Messages.................................................................

WM_CTLCOLOR: Once a control has been created, it can be displayed on the screen.

At any time, whether before the control is displayed or after it has been displayed, if you

need to perform some type of drawing such as changing its color, you can use the

WM_CTLCOLOR message which fires the OnCtlColor() event.

Scroll Bar Messages: As we will learn when studying scroll bars and thumb-based

controls, a dialog-based object can be equipped with scroll bars, just like a frame of a

view-based application. We will also see that these controls do not handle their own

scrolling messages. Ther rely on their host.

If a dialog object is equipped with one or two scroll bars or one of its controls is based on

scrolling operations, when the user clicks a scroll bar, the OnHScroll() or the

OnVScroll() event is sent based on the WM_HSCROLL or the WM_VSCROLL

messages respectively.

13.3 Floating Windows.......................................................................................