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Creating an Object Pointer
AVIBall uses the following structure as its object pointer. The first member
of this structure points to the virtual function table that AVIBall uses to
access its functions. Applications can cast this structure to the PAVISTREAM data
type. Methods that use the PAVISTREAM data type use only the pointer to the
virtual function table. The members following the pointer to the virtual function
table are used internally by AVIBall.
typedef struct
{
IAVIStreamVtbl FAR * lpvtbl;
// Ball instance data.
ULONG ulRefCount;
DWORD fccType; // is this audio/video?
int width; // size, in pixels, of each frame
int height;
int length; // length, in frames
int size;
COLORREF color; // ball color
} AVIBALL, FAR * PAVIBALL;
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All the contacts and projectsDmitry Vasiliev (just.dmitry)
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