1. MFC Document/View programs

2. Win32APi vs DocView Win32API Data & display are interrelated
Program "knows" about the data
Data elements can be "inside" the window class, but unrelated to window itself
i.e.; a window may "provide access to" multiple pieces of unrelated data
WndProc must distinguish how to process each piece of data
Data "value" is independent of how to display the "value"
Often need different ways to "see" the data in different windows
Sort, format, arrangement on-screen
© DJ Foreman 12/28/2018

3. Doc/View Concepts CDocument (class)
Holds the data
Manages actions upon the data
CView (class) defines the layout & possible user interactions
Manages the display of the data
Manages user interactions (NOT changes to the data itself!!!), such as select, zoom, copy, move, etc.
Still need to create CFrameWnd and CWinApp classes
Minimal code required for them
© DJ Foreman 12/28/2018

4. Documents Any kind of data (text, graphics, whatever) 2 kinds of apps:
Single Document Interface (SDI)
Multiple Document Interface (MDI)
more than 1 doc/window is a possible & likely scenario
you will see these abbrev's in function names, #defines, etc.)
© DJ Foreman 12/28/2018

5. Programming Approach Similar to Win32API
DocView achieves separation of data & rendering
Create a Frame Window which displays the view
Multiple views possible for same data
A View only contains 1 document
© DJ Foreman 12/28/2018

6. Views Document Frame Window
Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty, and dedicated to the proposition that all men are created equal
Four score
Created equal
© DJ Foreman 12/28/2018

7. Coordinates documents, views, and frame windows
MFC Template Classes
Coordinates documents, views, and frame windows
Application object creates a template
Template coordinates display of the data in a view in a frame window
CWinApp object is used to create a Document Template
The Document Template creates
CDocument object
CFrameWnd object
CFrameWnd object creates a CView object
CView object displays the document data
12/28/2018

8. Template/ Document/View/Window
Application Object
Doc Template
Doc Object
Frame Window
View
View
© DJ Foreman 12/28/2018

9. Object creation Created at runtime Dynamic creation macros
Minimum classes needed:
CFrameWnd
Cdocument
Cview
CWinApp
Usually in separate .h & .cpp files
AppWizard does most of the initialization for you
12/28/2018