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static HINSTANCE hinst; // The instance handle of our application
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static RECT wndRect; // A rectangle object for the window's client area
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static HWND hwndApp; // The handle of the application window
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static LPDIRECTDRAW lpdd; // Pointer to DirectDraw object
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static LPDIRECTDRAWSURFACE lpFrontBuffer; // Pointer to front buffer
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static LPDIRECTDRAWSURFACE lpBackBuffer; // Pointer to back buffer
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static LPGUID lpServiceProviderGuid; // Pointer to GUID of the service provider
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static LPDIRECTPLAY lpDirectPlay1; // Pointer for the DirectPlay Object
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static DPID playerID; // To store the player ID
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static BOOL joinSession; // Join a session(TRUE) or create a new one(FALSE)
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// Function declarations for forward references
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static BOOL WinInit( HINSTANCE hInst, int nCmdShow ); //Initialize & set up Windows
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static BOOL DXInit(void); //Initialize & set up DirectX components
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static void UpdateFrame(char* direction);
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static void CleanUp();
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// Called by DirectX when enumerating service providers
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static BOOL FAR PASCAL DirectPlayEnumerateCallback(
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LPGUID lpSPGuid,
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LPTSTR lpszSPName,
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DWORD dwMajorVersion,
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DWORD dwMinorVersion,
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LPVOID lpContext
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);
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// Called by DirectPlay when enumerating sessions
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static BOOL FAR PASCAL EnumSessionsCallback(
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LPDPSESSIONDESC lpSessionDesc,
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LPVOID lpContext,
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LPDWORD lpdwTimeOut,
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DWORD dwFlags
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);
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//Helper functions
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static HRESULT CreateDirectPlayInterface();
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static HRESULT FindSession();
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static HRESULT OpenSession();
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static HRESULT MakePlayer();
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Variable &
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Function
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Declarations
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