class CFormView : public CScrollView
The CFormView class is the base class used for form views. A form view is essentially a view that contains controls. These controls are laid out based on a dialog-template resource. Use CFormView if you want forms in your application. These views support scrolling, as needed, using the CScrollView functionality.
When you are Creating a Forms-Based Application, you can base its view class on CFormView, making it a forms-based application.
You can also insert new Form Topics into document-view-based applications. Even if your application did not initially support forms, Visual C++ will add this support when you insert a new form.
The MFC Application Wizard and the Add Class command are the preferred methods for creating forms-based applications. If you need to create a forms-based application without using these methods, see Creating a Forms-Based Application.