Development. Software Application. MFC, and STL. A Visual C++, Tutorial. Zhang Wenzu. Bud Fox. Tan May Ling. CRC Press. Taylor &.

Transcription

1 Software Application Development A Visual C++, MFC, and STL Tutorial Bud Fox Zhang Wenzu Tan May Ling CRC Press Taylor &. Francis Group Boca Raton London New York CRC Press is an imprint of the Taylor St Francis Group, an informa business A CHAPMAN & HALL BOOK

2 Contents Preface Acknowledgments Introduction Authors xxvii xxix xxx' **xvii PART I User Interaction Chapter 1 Object-Oriented Analysis and Design Introduction Background Research Software Requirements General Use Case Narratives Use Case Scenarios and Conversations Scenario Conversation K 1.6 Noun and Verb Analysis X 1.7 Object Analysis K 1.8 Preliminary Class Diagram 1.9 Basic Program Implementing the Class Structure Summary 15 References 15 9 Chapter 2 Initial Graphical User Interface Introduction Application Wizard Menus Application Icon Toolbars Inserting a Common Operations Inserting Toolbar 21 a Common Blocks Toolbar Attaching the Toolbars to the Application Frame Controlling the Toolbar Visibility Add Event-Handler Functions for the Menu Entries Add Event-Handler Functions for the Common Blocks Toolbar Buttons Block Library Dialog Window Insert a New Dialog Resource Attach a Class to the Dialog Window Menu Entry and Toolbar Button Event-Handling Functions Attach Variables to the Controls 33

3 vj Contents Add Functionality for the Block Library Dialog Buttons Disable Duplicate Check Boxes Add All Blocks Uncheck All Blocks Add Functionality to the Common Blocks Toolbar Buttons Summary 41 References 41 Chapter 3 Constructing Blocks Introduction Merging the WIN32 Console Application with the Visual C++ Application Modifying Program Structure for Block Construction Preliminary Changes Class CSystemModel Block Construction Code Class CBlock Introduce a New CBlock Constructor Add a Constructed Block to the Block List Check Object Construction Drawing of Primitive Block Shapes General Drawing Functionality Drawing an Ellipse Block Drawing a Rectangle Block Drawing a Triangle Block Automatic Assignment of Block Position Completing Block Construction Construction of a Gain Block Construction of a Sum Block Construction of All Remaining Blocks Construction of a Derivative Block Construction of a Divide Block Construction of an Integrator Block Construction of a Linear Function Block Construction of an Output Block Construction of a Signal Generator Block Construction of a Subsystem Block Construction of a Subsystem In Block Construction of a Subsystem Out Block Construction of a Transfer Function Block Check Construction of System Model Drawing Block Graphical Detail Implementing Functionality to Draw Detail CConstantBlock: :DrawBlock() CGainBlock: :DrawBlock() CSumBlock:-.DrawBlockO CDerivativeBlock: :DrawBlock() CDivideBlock::DrawBlock() CIntegratorBlock: :DrawBlock() CLinearFnBlock: :DrawBlock() COutputBlock::DrawBlock() 84

4 Contents v" CSignalGeneratorBlock: :DrawBlock() CSubsystemBlock::DrawBlock() CSubsystemInBlock::DrawBlock() CSubsystemOutBlock::DrawBlock() CTransferFnBlock: :DrawBlock() Display of Block Graphics Summary 96 References 96 Chapter 4 Constructing Block Ports Introduction Block-Based Port Position Ports on an Ellipse Block Ports on a Rectangle Block Ports on a Triangle Block Changing the CPort Class CPort Member Variables CPort Member Methods Accessor Methods Calculate Port Position CPort Constructor Augmenting the CBlock Class Augmenting the CBlockShape Class Derived-Block Constructors CConstantBlock Constructor Check the System Model Augmenting the Remaining Block Constructors Drawing Ports Call CBlock: :DrawBlockPorts() Add CBlock: :DrawBlockPorts() Add CPort: :DrawPort() Display of Block Ports Summary 18 Chapter 5 Constructing Connections Introduction Adding Connections to the DiagramEng Project Augment the CConnection Class Add a Function to Add the Connection to the List Add a Function to Get the Connection List Add an OnLButtonDownO Function Add an OnMouseMoveO Function Add an OnLButtonUp () Function Draw Connections Build and Run the Project Context Menu Insert a Context Menu Add an Event-Handler Function for the Context Menu Set the Context Menu Point 131

5 vjjj Contents Attach Event-Handler Functions for the Context Menu Entries Item Deletion Set Item Properties System Model-Based Object Deletion Summary 135 References 135 Chapter 6 Moving Blocks and Connections Introduction Moving Blocks CRectTracker Class Augmenting the OnLButtonDownO Function Moving a Block Set Block Position Moving Connection End Points Move a Connection End Point Snap Connection End Points to a Port Augment TrackConnectionEndPointO Augment SetBlockPositionO Unsnap Connection End Points from a Port Inserting and Moving Connection-Based Bend Points Augment the Context Menu with an Insert Bend Point Operation Drawing a Connection with Head, Tail, and Bend Points DrawConnectionO Amend DrawArrowHeadO Interaction Problem Concerning Invisible Connections Moving a Connection-Based Bend Point Deletion of Connections and Bend Points Deletion of a Bend Point Deletion of a Connection Summary 167 References 168 Chapter 7 Automatic Block Placement Introduction Hypothetical Interactive Block Positioning Actual Improved Automatic Block Positioning Summary 175 Chapter 8 Connection-Based Bend Points Introduction Attaching a Connection Tail Point to a Bend Point Amend the TrackConnectionEndPointO Function Add Member Variables and Methods to the CConnection Class Add a SnapConnectionTailPointToBendPointO Function Problem Concerning the Connection Tail Point 182

6 Contents ix 8.3 Deletion of a Bend Point to Which a Connection Is Attached Deletion of a Connection with a Bend Point to Which a Connection Is Attached Problem Concerning the Insertion of Bend Points Automatic Attachment of Connection End Points upon Initial Construction Deletion of Blocks with Attached Connections Summary 202 Chapter 9 Block Dialog Windows Introduction Processing a Left-Button-Double-Click Event Adding Dialog Windows to Accept User Input Constant Block Dialog Insert a New Dialog Window and Add Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Functionality to Initialize Variables Add the Overriding BlockDlgWndParameterlnput() Function Combined Left-Button-Down and Left-Button-Double-Click Problem Derivative Block Dialog Insert a New Dialog Window and Add Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Functionality to Initialize Variables Add the Overriding BlockDlgWndParameterlnput () Function Divide Block Dialog Insert a New Dialog Window and Add Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Functionality to Initialize Variables Add the Overriding BlockDlgWndParameterlnput() Function Gain Block Dialog Insert a New Dialog Window and Add Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Functionality to Initialize Variables Add the Overriding BlockDlgWndParameterlnput () Function Integrator Block Dialog Insert a New Dialog Window and Add Controls Attach a Class to the Dialog Window 221

7 x Contents Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Functionality to Initialize Variables Add the Overriding BlockDlgWndParameterlnput () Function Linear Function Block Dialog Insert a New Dialog Window and Add Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Functionality to Initialize Variables Add the Overriding BlockDlgWndParameterlnput () Function Output Block Dialog Insert a New Dialog Window and Add Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Functionality to Initialize Variables Add the Overriding BlockDlgWndParameterlnput () Function Signal Generator Block Dialog Insert a New Dialog Window and Add Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Functionality to Initialize Variables Add the Overriding BlockDlgWndParameterlnput () Function Subsystem Block Dialog Insert a New Dialog Window and Add Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Functionality to Initialize Variables Add the Overriding BlockDlgWndParameterlnput () Function Subsystem In Block Dialog Insert a New Dialog Window and Add Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Functionality to Initialize Variables Add the Overriding BlockDlgWndParameterlnput () Function Subsystem Out Block Dialog Insert a New Dialog Window and Add Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons 241

8 Contents xi Add Functionality to Initialize Variables Add the Overriding BlockDlgWndParameterlnput () Function Synchronizing the Subsystem-Related Block Values Sum Block Dialog Insert a New Dialog Attach a Class to the Dialog Window and Add Controls 243 Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Functionality to Initialize Variables Add the Overriding BlockDlgWndParameterlnput () Function Transfer Function Block Dialog Insert a New Dialog Window and Add Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Functionality to Initialize Variables Add the Overriding BlockDlgWndParameterlnput () Function Summary 250 References 250 Chapter 10 Conversion of String Input to Double Data Introduction Conversion of CString Input Strings to Double Member Data Add a Global ConvertStringToDoubleO Function Add a Global StripInputStringO Function Add a Global Data-Dimension-Determining Function Add a Global ConvertStringMatrixToDoubleMatrixO Function Add Global Diagnostic Printing Functions Augmenting the CBlock-Derived Classes Augment the CConstantBlock Class Augment the CGainBlock Class Augment the CIntegratorBlock Class Augment the CTransferFnBlock Class Summary 277 Reference 277 Chapter 11 Moving Multiple Items Introduction Edit the TrackltemO Function to Call TrackMultipleltems () Add a TrackMultipleltems () Function to CDiagramEngDoc Add the DetermineCurrentAndlntersectRects () Function Add the DetermineTrackerDeltaPositionO Function Add a Function for a Key-Down Event to CDiagramEngView Add Key-Flag-Based Members to CDiagramEngDoc 287

9 xjj Contents 11.6 Flow of Control in the TrackMultipleltemsO Function Add a Toolbar Button to Activate Multiple Item Tracking Summary 291 Reference 291 Chapter 12 Addition of a Tree View Control Introduction Add a Tree View Control Dialog Window Insert a Dialog Window and Add Controls Attach a Class to the Dialog Window Add Functionality to Invoke the Tree View Dialog Attach a Variable to the Dialog Window Control Add the OnlnitDialogO Function to the CTreeDialog Class Add Icons to the Tree View Control Add an Event-Handler Function for Tree View Node Selection Docking of the Tree Dialog Window as a Tree Dialog Bar Step 1: Change the Base Class from CDialog to CDialogBar Step 2: Change the Constructor and DoDataExchangeO Methods Step 3: Add a New Declaration for the OnlnitDialog () Function with Different Parameters Step 4: Alter the Message Map to Invoke the OnlnitDialogO Function Step 5: Add the Implementation of the New OnlnitDialog () Function Step 6: Alter the Dialog Box Resource Styles Step 7: Add an Instance of the CDialogBar to the CMainFrame Class Step 8: Invoke the Create () Method for the New CDialogBar Instance Step 9: Add Support for Dynamic Docking and Resizing of the CDialogBar Instance Resetting the Appropriate Dialog Controlling the Toolbar Visibility Summary 319 References 319 Chapter 13 Review of Menu and Toolbar-Based Functionality: Part Introduction Menus Main Frame-Based Menus Child Frame-Based Menus Context Menu Toolbars Main Frame Toolbar Common Operations Toolbar Common Blocks Toolbar 327

10 Contents XIM 13.4 Functionality to be Added Child Frame-Based Menu Items Context Menu Items Toolbar Button-Based Functionality Summary 330 Chapter 14 Context Menu Extension Introduction Numerical Solver Dialog Window Insert a New Dialog Window and Add Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Functionality to Initialize Variables Add a Dialog Window Parameter Input Function to the Underlying Class Call the Dialog Window Parameter Input Function Deleting Multiple Grouped Items Change the Name of the Edit Menu Entry Add a Delete Grouped Items Entry to the Context Menu Add an Event-Handler Function to Delete Grouped Items Setting of Item Properties Summary 345 Reference 345 Chapter 15 Setting Port Properties Introduction Setting Divide Block Ports Reset Input Ports Calculate Port Position Angles Reset Output Ports Setting Sum Block Ports Reset Input Ports Calculate Port Position Angles Reset Output Ports Drawing Ports Depending on Connection Status Drawing Port Signs Preparation for Adjustment of Port Properties Dialog-Based Port Property Setting Insert a Dialog Window and Add Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Overriding Versions of the SetPortPropertiesO Function Deleting Ports Summary 397

11 xiv Contents Chapter Key-Based Item Movement 16.1 Introduction Add a Fine Move Item Entry to the Context Menu Add Members to the CDiagramEngDoc Class Edit the CDiagramEngView: :OnKeyDown() Function Add a FineMoveltemO Function Add a FineMoveBlockO Function Add a FineMoveConnectionBendPointO Function Fine Movement Process Control Flow Summary 411 Reference 411 Chapter 17 Reversing Block Direction Introduction Add a Reverse Block Entry to the Context Menu Add a ReverseBlockDirectionO Function to CBlock Class Add Accessor Methods to the CBlockShape Class Add Accessor Methods to the CPort Class Test the Application Summary 418 PART II Model Computation and Data Chapter 18 Model Validation Introduction Validating a Model Validate Model Blocks Validate Model Block Ports Validate Model Connections Changes to be Made to Draw in the Correct Color Modify the CSystemModel: :DrawSystemModel() Function Modify the CConnection: :DrawConnection() Function Modify the CConnection::DrawArrowHead() Function Unique Port and Bend Point Connection Augment the SnapConnectionHeadPointToPort () Function Augment the SnapConnectionTailPointToPortO Function Summary 446 Reference 446 Chapter 19 Non-Feedback-Based Signal Propagation Introduction Signals and Systems Continuous-Time and Discrete-Time Signals Continuous-Time and Discrete-Time Systems 447

12 Contents xv Memory-Based Systems and Memoryless Systems Time Variant and Time Invariant Systems 44S Linear and Nonlinear Systems State Variables, State Vectors, and State Space Models with Algebraic and Feedback Loops Signal Propagation Determination of Feedback Loops General Steps to Determine Feedback Loops Determine Model Feedback Loops Set Reference-From Port of Connection Emanating from a Bend Point Assign Block Connectivity Matrix Values Determine Loops from Connectivity Matrix Determining Loops from the Connectivity Matrix Determine Initial Node Vector Build Tour Find Current Tour Position Find Branch Nodes Number of Ones on Matrix Row Check Repeated Entries Reset Tour Vector Save Tour Vector Print Integer Matrix Print Integer Vector Running the Application Signal-Based Class Structure Additions Required for Direct Signal Propagation Addition of Signal Propagation Code Add Code to the CDiagramEngDoc: :OnSimStart () Function Modify the CSystemModel::ValidateModel() Function Modify the CDiagramEngDoc: :OnModelBuild() Function Add a CSystemModel ::GetNFeedbackLoops() Function Add a CSystemModel: :SignalPropagation Direct!) Function Add a CSystemModel: :DetermineNTime Steps () Function Add a CSignal: :ResetSignalData() Function Add a CSystemModel: :SignalPropagation SystemOfEquations() Function Add a Virtual CBlock: :OperateOnData() Function Propagating a Simple Direct Signal Implementation of Simple Signal Propagation Add a CConstantBlock::OperateOnData() Function Add a COutputBlock: :OperateOnData() Function 485

13 xvj Contents Add a CBlock: :WriteDataToOutputSignal() Function Add a CBlock: :ReadDataFromSingleInput Signal () Function Add Accessor Methods to Get and Set Signal Data and Validity Running an Experiment Summary 495 References 495 Chapter 20 Graph Drawing Introduction Addition of Structure to Display an Empty View Window Add a Show Graph Button to the Output Block Dialog Add a CDocTemplate Object and Accessor Function to the CDiagramEngApp Modify CDiagramEngApp: :lnitlnstance() to Create a Class 499 CMultiDocTemplate Object Add a COutputBlockView Class to Support Drawing within Its View Add Template-Based Functionality to the Show Graph Event- Handler Function Add the OnlnitialUpdate () and OnUpdate () Functions to the CDiagramEngView Class Supplementing Existing Classes to Access Output Block Data Add a Member Variable to the COutputBlockView Class Modify COutputBlock: :BlockDlgWndParameter Input () Add a Member Variable to the COutputBlockDialog Class Modify the COutputBlockDialog Constructor Declaration and Definition Add Code to COutputBlockDialog: :OnOutputBlkDlg BtnShowGraphO Add Accessor Functions to the COutputBlockView Class Plotting Data as a Text String Add a COutputBlock: :GetDataDimensions() Function Extend the COutputBlockView: :OnDraw() Function Plotting Numerical Data as a Graph Modify OnDrawO in Preparation for Plotting Curves Add a COutputBlockView: :DetermineMaxMin Values () Function Add DrawGraphO to the COutputBlockView Class Drawing Problem due to a Change in Active Document Status Add SelectGraphCurveColor () to the COutputBlockView Class Add GetTimeParameters () to the CSystemModel Class Deleting an Output Block and Its View Delete the Output Block View Modify CDiagramEngDoc: :DeleteBlock() Modify CDiagramEngDoc: :OnEditDeleteGroupedItems()...525

14 Contents xvii 20.7 Adding Functionality to the Output Block Dialog Window Add Accessor Functions to the COutputBlock Class Amend COutputBlockView: :DrawGraph() Amend COutputBlock: :BlockDlgWndParameterInputO Summary 531 References 531 Chapter 21 Block Operations Introduction Linear Function Block Data Operation Signal Generator Block Data Operation Gain Block Data Operation Sum Block Data Operation Derivative Block Data Operation Three-Point Derivative Five-Point Derivative Implementing the OperateOnDataO Function Addition of an OperateOnDataO Function Addition of the CalculateThreePointDerivative () Function Addition of the CalculateFivePointDerivative () Function Addition of Class Member Variables and Their Initialization Addition of a ResetBlockDataO Function Addition of a ResetMemoryBasedBlockDataO Function Testing the Derivative Block Integrator Block Data Operation Integration Truncation Error and Method Order Higher-Order Methods Implementing an Integration Function Implementing the OperateOnDataO Function Addition of an OperateOnDataO Function Addition of the EulerMethodO Function Addition of the GetlntegrationMethodO Function Addition of Class Member Variables and Their Initialization Addition of a ResetBlockDataO Function Running an Experiment Divide Block Data Operation Implementing the OperateOnDataO Function Implementing the DivideMultiplyOperationO Function Implementing the GaussJordanEliminationFullPivotingO Function Implementing the Swap () Function Remaining Block Operation Functions Summary 605 References 606

15 xviii Contents Chapter 22 Preparation for Feedback-Based Signal Propagation Introduction Linear Systems Nonlinear Systems Newton's Method Computing a Linear System with a Nonlinear Method Model Assumptions State-Space Equations Resorting of the Block List Saving Tour Vectors Get a Saved Tour Vector from a List Building a Block List from an Integer Array Determining Initial Output Signals Check Signal Validity Preliminary Signal Propagation for Models with Feedback Loops Adding Functionality to Set the Initial Output Signal Adding a Dialog Window to Allow User Input Insert a Dialog Window and Add Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Functionality to Initialize Variables Adding a Context Menu and Updating User Input Add a Context Menu Entry to Set the Initial Output Signal Add an Event-Handler Function Named OnSetOutputSignalO Add an AssignBlockOutputSignalO Function to Set the Signal Value Building the System of Equations Representing the Block Diagram Order of Operations to Compute a Model with Feedback Loops Preliminary Signal Propagation Data Dimensions Construction of System Signal Vector Construction of System Function Operation Vector Newton Solver Signal Vector Assignment Execution of Output Blocks Resetting of States Additional Functions Required to Compute a Model with Feedback Loops Determining the System Equations Data Dimensions Determining the System Equations Signal Vector Determining the System Equations Function Operation Vector Newton Method Iterative Solver Updating of the System Equations Signal Vector Testinsi the Code Structure 658

16 Contents xix 22.8 Stopping a Simulation Augment the CSystemModel: :SignalPropagation Direct!) Method Augment CSystemModel: :SignalPropagationSystem OfEguationsO Add a CheckStopButtonPressedO Method to the CSystemModel Class Complete the CDiagramEngDoc: :OnSimStop() Event-Handler Function Summary 665 References 666 Chapter 23 Feedback-Based Signal Propagation Introduction Newton-Method-Based Solver Object-Oriented Transformation of the Newton-Method-Based Solver Header File Used in the Object-Oriented Approach Source File Used in the Object-Oriented Approach Test Case Problems Computed Using Newton's Method Case Case Case Case Case Adding the Newton-Method-Based Solver to the DiagramEng Project Addition of Details to Complete the NewtonSolverO Function Addition of the CNewtonMethod Class with Member Declarations Addition of the CNewtonMethod Class Member Function Definitions Changes to be Made to Resolve Exiting the Program Prematurely Modify nrerroro Modify InsrchO Modify ludcmpo Modify newt () Modify All nrerroro Calls Concerning Memory Allocation Failure Modify Relevant Functions to Process the Integer Returned from newt () Addition of the Manual Assertion Functions to the Project Convergence of the Newton Method Used to Compute Models with Feedback Loops Testing the Newton-Method-Based Code for Models with Feedback Loops Computing a Linear Problem with a Feedback Loop Computing an Ordinary Differential Equation Using a Feedback Loop Computing the Linear State Equations Mechanical System Electrical System Computing a Coupled Linear System 721

17 XX Contents Computing the Lotka-Voltcrra Equations Computing the Lorenz Equations 23.7 Summary References /JZ 732 Chapter 24 Placing an Edit Box on a Toolbar Introduction Edit the Resource File Create the Toolbar Edit Box Update the Toolbar Edit Box A Memory Leak Summary 741 References 74^ Chapter 25 Serialization Introduction 25.2 System Model Data Structure CSystemModel Data CBlockData CBlockShape Data CPortData CConnection Data CSignalData Derived-Block Class Data CConstantBlock Data CDerivativeBlock Data CDivideBlock Data CGainBlock Data CIntegrator Data CLinearFnBlock Data COutputBlock Data CSignalGeneratorBlock Data CSubsystemBlock Data CSubsystemlnBlock Data CSubsystemOutBlock Data CSumBlock Data CTransferFnBlock Data Event-Handler Functions for File Input/Output Child Frame-Based Event-Handler Functions CDiagramEngDoc: :OnFileOpen() CDiagramEngDoc: :ReadDiagramEngData FromFileO CDiagramEngDoc: :OnFileSaveAs() CDiagramEngDoc: :OnFileSave() CDiagramEngDoc: :OnFileClose() CDiagramEngApp: :OnAppExit() CDiagramEngApp::SaveAllDocuments() CDiagramEngApp: :OnFileRecentFileOpen() CDiagramEngDoc: :OnWndCloseAllDocs()

18 Contents xxi Main Frame-Based Event-Handler Functions CDiagramEngApp::OnFileOpen() Writing Data Members to a File Writing CDiagramEngDoc Data to a File Writing CSystemModel Data to a File Writing CBlock Data to a File Writing CBlockShape Data to a File Writing CPort Data to a File Writing Derived-Block Class Data to a File CConstantBlock::WriteBlockDataToFile() CDerivativeBlock::WriteBlockDataTofile() CDivideBlock::WriteBlockDataToFile() CGainBlock::WriteBlockDataToFile() CIntegratorBlock::WriteBlockDataToFile() CLinearFnBlock::WriteBlockDataToFile() COutputBlock: :WriteBlockDataToFile() CSignalGeneratorBlock: :WriteBlockData ToFileO CSubsystemBlock::WriteBlockDataToFile() CSubsystemlnBlock: -.WriteBlockData ToFileO CSubsystemOutBlock::WriteBlockData ToFileO CSumBlock::WriteBlockDataToFile() CTransferFnBlock::WriteBlockData ToFileO Writing CConnection Data to a File Example of File Output Reading Data Members from a File Reading CSystemModel Data from a File Reading CConnection Data from a File Reading CBlock Data from a File Reading CBlockShape Data from a File Reading CPort Data from a File Reading Derived-Block Class Data from a File CConstantBlock: :ReadBlockDataFrom File!) CDerivativeBlock: :ReadBlockDataFrom FileO CDivideBlock::ReadBlockDataFromFile() CGainBlock::ReadBlockDataFromFileO CIntegratorBlock: :ReadBlockDataFrom FileO CLinearFnBlock::ReadBlockDataFromFile() COutputBlock: :ReadBlockDataFromFile() CSignalGeneratorBlock: :ReadBlockData FromFileO CSubsystemBlock: -.ReadBlockDataFrom FileO CSubsystemlnBlock::ReadBlockDataFrom FileO 805

19 xxii Contents CSubsystemOutBlock: :ReadBlockData FromFileO CSumBlock: :ReadBlockDataFromFile() CTransferFnBlock: :ReadBlockDataFrom FileO Saving the Initial Output Signal for the Divide Block ) Add Member Variables to the CDivideBlock Class Amend the CDivideBlock Constructor and Destructor Functions Add the Overriding AssignBlockOutputSignaK) Function to the CDivideBlock Class Amend the CDivideBlock Class Serialization Functions Amend the PreliminarySignalPropagationO Function Adding Data-Writing Functionality to the Output Block Add a Save Data Button to the Output Block Dialog Resource Add an Event-Handler Function for the Save Data Button Summary 824 References 825 PART III Refinement Chapter 26 Review of Menu and Toolbar-Based Functionality: Part II Introduction Functionality to Be Added Summary 830 Chapter 27 Printing and Print Preview Introduction Additions to the DiagramEng Project Mapping Modes Coordinate Axes Scale of Transformation Augmenting the CDiagramEngView OnBeginPrintingO Function Augmenting the CDiagramEngView OnPrepareDCO Function Augmenting the CDiagramEngView OnDraw () Function Summary 844 References 844 Chapter 28 Implementing a Scroll View Introduction Coordinate Systems Conversion from CView to CScrollView Changes to "DiagramEngView.h" Changes to "DiagramEngView.cpp" Changes to CDiagramEngView: :OnInitialUpdate() Device Point to Logical Point Coordinate Conversions Amending the CDiagramEngView-Based Functions CDiagramEngView::OnContextMenu() CDiagramEngView: :OnLButtonDblClk() 853

20 Contents *x"' CDiagramEngView: :OnLButtonDown() CDiagramEngView: :OnLButtonUp() CDiagramEngView: :OnMouseMove() Amending the CDiagramEngDoc-Based Functions CDiagramEngDoc::TrackBlock() CDiagramEngDoc-.:TrackConnectionBend Point () CDiagramEngDoc: :TrackConnectionEnd Point () Tracking of Multiple Items Limiting Diagram Entity Placement Fitting the Logical View to the Physical View Zooming In and Out of the View Addition of Detail to the CDiagramEngView Zooming Functions Addition of a ScaleSystemModeK) Function to the CSystemModel Class Resetting the Default Model Geometry Summary 884 References 884 Chapter 29 Edit Menu Introduction Selection of All Content Add a Select-All-Related Member Variable to the CDiagramEngDoc Class Complete the CDiagramEngDoc: :OnEditSelectAll() Function Add a Function to the CSystemModel Class to Get the Diagram Coordinate Minima Add a Resetting Mechanism to Cancel the Select-All Operation Cut, Copy, and Paste Add CDiagramEngDoc-Based Event-Handler Functions Add the CClipboard Class Declaration and Definition Add Class Copy Constructors and Related Methods CBlock Copy Constructor CBlockShape Copy Constructor CPort Copy Constructor CConnection Copy Constructor CConstantBIock Copy Constructor CDerivativeBlock Copy Constructor CDivideBlock Copy Constructor CGainBlock Copy Constructor CIntegratorBlock Copy Constructor CLinearFnBlock Copy Constructor COutputBlock Copy Constructor CSignalGeneratorBlock Copy Constructor CSubsystemBlock Copy Constructor CSubsystemlnBlock Copy Constructor CSubsystemOutBIock Copy Constructor 918

21 xxiv Contents CSumBIock Copy Constructor CTransferFnBlock Copy Constructor Testing the Cut, Copy, and Paste Operations for a Complete Model Undoing and Redoing Editing Actions Add the Undo and Redo Event-Handler Functions to the CDiagramEngDoc Class Add Functionality to Save System Models to a List to the CDiagramEngDoc Class Add a Copy Constructor to the CSystemModel Class Add an Assignment Operator to the CSystemModel Class Add Functionality to Update the User Interface to the CDiagramEngView Class Testing the Editing Actions Summary 941 References 941 Chapter 30 Annotations Introduction Add a CAnnotation Class to the Project Add an Annotation Dialog Window to the Project Add the Format Annotation Entry to the Context Menu Add the New Dialog Window and Associated Functionality Insert a New Dialog Window and Add All Necessary Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Attach Functionality to Display a Font List Add Functionality to the Dialog Window Buttons Add an Annotation to a System Model Deleting Annotations Moving Annotations Fine Movement of an Annotation Direct Movement of an Annotation Multiple Annotation Movement View Menu-Based Actions Augmenting Auto Fit Diagram Zooming In and Out of a Diagram Resetting Initial Diagram Geometry Format Menu-Based Actions Augment Document-Based Classes Updating the User Interface Edit Menu-Based Actions Cut, Copy, and Paste Actions Involving Annotations Add a Copy Constructor and Relevant Methods to the CAnnotation Class Add CAnnotation Specific Variables and Methods to the CClipboard Class Augment the OnEditCutO, OnEditCopyO, and OnEditPaste() Functions 987

22 Contents xxv Undo and Redo of Editing Actions Involving Annotations Augment the Model Saving Function Augment the CSystemModel Copy Constructor Augment the CSystemModel Assignment Operator Serialization of the CAnnotation Class CAnnotation Class Serialization CAnnotation: :WriteAnnotationData ToFileO CAnnotation: :ReadAnnotationData FromFileO CSystemModel Class Serialization Augmenting the File Open Methods Summary 1003 References 1004 Chapter 31 Tools Menu Introduction Tools Menu Implementation: Diagnostic Information Presentation Space Application Programming Interface Structures, Functions, and Fields Required for Memory-Related Information Add a Dialog Window to Display Diagnostic Memory-Related Information Insert a New Dialog Window and Add All Necessary Controls Attach a Class to the Dialog Window Attach Variables to the Dialog Window Controls Add Functionality to the Dialog Window Buttons Add Functionality to Initialize Variables Create the Dialog Window Summary 1014 References 1015 Chapter 32 Help Menu Introduction Using DiagramEng Creating the Using DiagramEng Document CreateProcessO Function OnHelpUsingDiagramEngO Function Summary 1022 References 1023 Chapter 33 Finalizing the Project Introduction Preventing Usage of Nonfunctional Blocks Preventing the Building of Subsystems Disabling Nonfunctional Items 1027

23 xxvj Contents 33.5 Preparing the Source and Executable Files Memory Leak Detection Release Version of the Software Source Code Summary 1031 References 1031 Chapter 34 Conclusion Introduction Project Review User Interaction Model Computation and Data Refinement Improvements Object-Oriented Analysis and Design Class Hierarchy Retrieving the Address of the Document Addition of Classes Unnecessary Features Naming Convention Member Variables and Constant Accessor Methods Program State Generic Containers Base Class Selection Serialization Activity Organization Summary 1041 References 1042 Appendix A: ControlEng: Win32 Console Application 1043 Appendix B: Constructing Connections: An Exploration 1063 Appendix C: NodeArcConnectivity: Win32 Console Application 1077 Appendix D: Debugging: An Introduction 1093 Appendix E: Matrixlnversion: Win32 Console Application 1115 Appendix F: Using DiagramEng 1133 Index 1151