Visual C++ and MFC Programming 2nd Edition

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

{

public:

enum { IDD = IDD_EXERCISE_DLG };

CExerciseDlg();

~CExerciseDlg();

};

CExerciseDlg::CExerciseDlg()

: CDialog(CExerciseDlg::IDD)

{

}

CExerciseDlg::~CExerciseDlg()

{

}

2. Before using the new class, declare a variable of it as follows:

BOOL CExerciseApp::InitInstance()

{

CExerciseDlg Dlg;

m_pMainWnd = &Dlg;

return TRUE;

}

3. Save All

12.2 Modal Dialog Boxes...................................................................................

12.2.1..Dialog-Based Applications................................................................

There are two types of dialog boxes: modal and modeless. A Modal dialog box is one that

the user must first close in order to have access to any other framed window or dialog

box of the same application.

One of the scenarios in which you use a dialog box is to create an application that is

centered around a dialog box. In this case, if either there is no other window in your

application or all the other windows depend on this central dialog box, it must be created

as modal. Such an application is referred to as dialog-based

There are two main techniques you can use to create a dialog-based application: from

scratch or using one of Visual C++ wizards. After creating a dialog resource and deriving

a class from CDialog, you can declare a variable of your dialog class. To display your

dialog box as modal, you can call the CDialog::DoModal() method in your

CWinApp::InitInstance() method. Its syntax is:

virtual int DoModal();

This method by itself does nothing more than displaying a dialog box as modal. We will

learn that you can use this method to find out how the user had closed such a dialog box.