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Subclassing & Hooking

Windows is a message-based system. Every action you request creates one or more messages to carry out the action. These messages are passed between objects and carry with them information that gives the recipient more detail on how to interpret and act upon the message. | Ỉỉnrtỉí .sỉiinỉ the Fttli renter of I a H.iXE f Subclassing With Visual Basic O REILLY Stephen Teiibei Subclassing and Hooking with Visual Basic Preface Who This Book Is For How This Book Is Structured Obtaining the Sample Code Conventions Used in This Book How to Contact Us Acknowledgments I Introducing Subclassing and Hooking 1. Introduction 1.1 Subclassing 1.2 The Window Hooking Mechanism 1.3 Tools to Aid Us in Our Efforts 1.4 A Word of Warning 2. Windows System-Specific Information 2.1 Inside a Windows Application 2.2 Inside the Windows Messaging System 2.3 Performance Considerations 3. The Basics of Subclassing and Hooks 3.1 What Is Subclassing 3.2 What Are Hooks II Subclassing and Superclassing 4. Subclassing 4.1 The AddressOf Operator 4.2 Some Subclassing Tips 4.3 Instance Subclassing An Example 4.4 Global Subclassing 4.5 Summary of Key Points in Subclassing 5. Subclassing the Windows Common Dialog Boxes 5.1 How Common Dialog BoxSubclassing Works 5.2 Using the Resource 5.3 Creating the Subclassing Application 5.4 Subclassing Common Dialog Boxes other Than Open and Save As 5.5 Problems Subclassing the Find and Replace Common Dialogs 6. ActiveX Controls and Subclassing 6.1 Subclassing a Third-PartyActiveX Control 6.2 Subclassing an ActiveX ControlCreated in VB 6.3 Subclassing a UserControl from Within a VB-Created ActiveX Control 6.4 Creating an ActiveX Control That Subclasses other Windows 7. Superclassing 7.1 What Is Superclassing 7.2 How the Superclassing Example Works 7.3 Peering into the Superclassing Application with Spy 8. Debugging Techniques for Subclassing 8.1 Where to Start 8.2 Microsoft Tools 8.3 NuMega s SmartCheck III Hooking 9. WH_CALLWNDPROC 9.1 How WH_CALLWNDPROC Works 9.2 A Thread-Specific Example 9.3 Caveats 10. WH_CALLWNDPROCRET 10.1 How WH_CALLWNDPROCRET Works 10.2 A Thread-Specific Example 10.3 Caveats 11. WH_GETMESSAGE 11.1 How WH_GETMESSAGE Works 11.2 A Thread-Specific Example 11.3 Caveats 12. WH_KEYBOARD and WH_KEYBOARD_LL 12.1 How .