The view is used for visualising. For illustration, while performing word processing, the user works on a sequence of words which compose the text. If a user is performing the calculations on a spreadsheet application, the interface and the user, is viewing is made up of small boxes known as the cells. The other user may be in front of the graphic document while drawing lines and other geometric figures. The thing that the user is looking at and performing changes is termed as view.
The view also permits the user to print a document. To let the user do everything on an application, you should provide a view that is an object based on the CView class. You can use either directly one of the classes derived from CView or you can derive your own custom class from the CView or one of its child classes.