Types of MFC applications created: Single document + Multi-document + dialog-based

Single Document Support document view schema, data saving-(read-Modify) document class function-display (view class function), more convenient. Based on the dialog box, the main window is a dialog box type, you can easily use the control, WYSIWYG programming, more convenient.

 single-document applications like Notepad are the basis for the development of file-processing software, except that each application processes only one document (compared to the multiple file). An application based on a dialog box like "Calculator", which has no documentation to work with, is generally the basis for the development of the tool software. 
 
 

 Dialog based (3 classes): CAboutDlg program name DLG Single document (5 classes): Caboutdlgcmainframe program name, DOC program name, view multiple documents (6 classes): Caboutdlgcmainframe program name, DOC program Name Viewcmainframe himself to a little bit. The dialog box is the simplest and must be the least class. A single bet is less than multiple documents. 
 
 

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Types of MFC applications created: Single document + Multi-document + dialog-based