Introduction to Windows Programming Jim Fawcett CSE 681

Introduction to Windows Programming Jim Fawcett CSE 681 – Software Modeling and Analysis Fall 2005 Basic Windows Programming Page 1

References · Developing Professional Applications for Windows 95 and NT Using MFC, Marshall Brain and Lance Lovett, Prentice Hall, 1997. – Now out of print, but some copies still available on-line. · Practical Visual C++ 6, Jon Bates and Tim Tompkins, Que, 1999. – Currently available through Barnes & Noble, Borders, and Amazon. com. · Programming Windows with MFC, Jeff Prosise, Microsoft Press, 1999. – This is a large, effective book, used in CSE 778 – Advanced Windows Programming, but overkill for this course. · Windows Forms Programming in C#, Chris Sells, Addison-Wesley, 2004 – Comprehensive and very well written. Basic Windows Programming Page 2

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The Simplest Classical Windows Program · Output from the MINWIN program is shown on the next slide. The program: – Creates a frame window – Paints a fixed text message in the window – Reacts to left mouse button clicks by creating a Message. Box · You will the program code, minwin. cpp, and project workspace, minwin. dsw in the folder MINWIN. www. ecs. syr. edu/faculty/fawcett/handouts/Core. Technologies/Windows Programming/code/basic. Windows/Minwin Basic Windows Programming Page 4

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The Simplest MFC based Program · Output from the MFCWIN program is shown on the next slide. The program: – Creates a frame window – Paints a fixed text message in the window – Reacts to left mouse button clicks by creating a Message. Box · You will the program code, mfcwin. cpp, and project workspace, mfcwin. dsw in the folder MINWIN. www. ecs. syr. edu/faculty/fawcett/handouts/Core. Technologies/Windows Programming/code/basic. Windows/Mfc. Win Basic Windows Programming Page 8

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Dialog Based Applications · A dialog is an opaque window, called a form, on which are embedded a collection of smaller windows called controls. – The main dialog form is wrapped in a dialog class, derived from MFC’s CDialog class. – Each control is a window with a self contained set of functionality that dialog designers use “as-is”, or modify in limited ways. – Controls are placed on the dialog form by dragging from a palette in the dialog resource editor. – Controls are hooked into the application processing by providing message handlers in the main dialog class that access the controls using CDialog: : Get. Dlg. Item(…) and CDialog: : Set. Dlg. Item(…) member functions. Basic Windows Programming Page 10

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Structure of MFC Dialog based Application Basic Windows Programming Page 12

Frame Window Applications · A frame window application consists of a window that supports a large client area in which text and graphics are displayed, embedded in a frame that supports menus and perhaps some controls. – All text and drawing in the client area are supported by the Graphics Device Interface Object (CGDIObject) and Device Context (CDC) classes. – Most frame window applications use the Single Document Interface (SDI) or Multiple Document Interface (MDI) architectures. These follow document/view architecture structure: • Documents provide all the support for managing the program’s data, including reading and writing from persistent storage. • Views provide all the support for displaying one or more views of the data and most user interactions with the program. Basic Windows Programming Page 13

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Win. Forms · · Win. Forms were introduced with. Net and are very similar to Visual Basic RAD Forms in Visual Studio, version 6. 0. Forms are used for both Frame Window and Dialog Applications. – You get a dialog application by pulling lot’s of controls onto a form and setting the Form properties to have dialog behavior. – You get a Frame Window by painting the Form your self, with the help of the. Net Graphics Device Interface (GDI++) · Forms are quite easy to build with the Visual Studio Designers – Lots of controls are available in the toolbox – Intellisense and the Object Browser make learning very fast. Basic Windows Programming Page 17

Simple Text Editing Demo · It is relatively easy to build Forms that: – open and save files using a File. Dialog. – Read files from Streams and edit text in a Text. Box. • The Stream and Text. Box do almost all the work. – Uses menus to interact with files or set program behaviours. · www. ecs. syr. edu/faculty/fawcett/handouts/CSE 681/code/project 2 Helper. F 05 Basic Windows Programming Page 18

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Programs with Communicating Forms · Often we want to use more than one Form in a program. – That means that we have to provide a way for them to communicate. – Each Form that needs to contact another must have a reference to it. – That happens automatically for the parent. The parent creates a Child Form attached to a reference it holds onto for later use. – For the Child to talk back, the Parent must pass it a reference to itself, usually in the Childs constructor. – For these conversations to be useful, both Parent and Child must provide functions for the other to call. · www. ecs. syr. edu/faculty/fawcett/handouts/CSE 681/code/project 2 Helper. F 05 Basic Windows Programming Page 20

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An Example – Form with Browse Control · If our program needs more than a simple File. Dialog provides, we may wish to build a more sophisticated or specialized control. · On the next page you will see an example of a Form, written in managed C++ invoking the services of a Browse Control, written in C#. · www. ecs. syr. edu/faculty/fawcett/handouts/Core. Technologies/Windows Programming/code/demo. Cpp. Win. Form Basic Windows Programming Page 22

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Frame Window based on Form · The next slide illustrates a Win. Form application that behaves like a Frame Window: – It paints is client area with: • An image • A drawn text caption • A line – But it also has inserted a control, showing mouse coordinates. This illustrates that controls can be used on Frame Windows: • They paint their own surfaces • They can react to event messages from their parent window. · www. ecs. syr. edu/faculty/fawcett/handouts/Core. Technologies/Windows Programming/code/CSharp. Win. Form Basic Windows Programming Page 24

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