لطفا منتظر باشید ...
MFC Library Application Types
The MFC library supports three application types: Single Document Interface (SDI), Multiple Document Interface (MDI), and Multiple Top-Level Windows Interface (MTI). An SDI application has, from the user's point of view, only one window. If the application depends on disk-file "documents," only one document can be loaded at a time. The original Windows Notepad is an example of an SDI application. An MDI application has multiple child windows, each of which corresponds to an individual document. Earlier versions of Microsoft Office applications (before Office 2000) such as Microsoft Word are examples of MDI applications. An MTI application is a single instance of an application running several of the top-level windows. Modern versions of the Office applications use this model.When you run the MFC Application Wizard to create a new project, MDI is the default application type. For the early examples in this book, you'll be generating SDI applications because fewer classes and features are involved. Be sure to select the Single Document option (on the Application Type page of the MFC Application Wizard) for these examples. Starting with Chapter 18, you'll be generating MDI applications. The MFC library application framework architecture ensures that most SDI examples can be upgraded easily to MDI applications.
