• Legal Information
• ▶Introducing DirectX 6.1
• ▶DirectX Foundation
• ▼DirectX Media
  • ▶ Direct3D Retained Mode
  • ▼DirectPlay
    • About DirectPlay
    • What's New in DirectPlay 6?
    • Writing a Network Application
    • ▶DirectPlay Overview
    • ▶DirectPlay Lobby Overview
    • ▶Providers
    • ▶Using DirectPlay
    • ▶DirectPlay Tools and Samples
    • ▶DirectPlay Interface Overviews
    • ▶DirectPlay Tutorials
    • ▼DirectPlay Reference
      • ▶Functions
      • ▶Callback Functions
      • ▶IDirectPlay4 Interface
      • ▶IDirectPlayLobby3 Interface
      • ▶Structures
      • ▶System Messages
      • ▶Standard Lobby Messages
      • ▶DirectPlay Defined Properties
      • Return Values
      • ▼Further Reading
        • Accessing COM
        • IUnknown Interface
        • IUnknown::AddRef and IUnknown::Release Methods
        • IUnknown::QueryInterface Method
    • Glossary