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IEnumSubStream::Next method (tapi3if.h)

  • Article

The Next method gets the next specified number of elements in the enumeration sequence.

Syntax

HRESULT Next(
  [in]  ULONG       celt,
  [out] ITSubStream **ppElements,
  [out] ULONG       *pceltFetched
);

Parameters

[in] celt

Number of elements requested.

[out] ppElements

Pointer to ITSubStream pointers returned.

[out] pceltFetched

Pointer to number of elements actually supplied. May be NULL if celt is one.

Return value

This method can return one of these values.

Value Meaning
S_OK
 Method returned celt number of elements.
S_FALSE
 Number of elements remaining was less than celt.
E_POINTER
 The ppElements parameter is not a valid pointer.
E_OUTOFMEMORY
 Insufficient memory exists to perform the operation.

Remarks

TAPI calls the AddRef method on the ITSubStream interface returned by IEnumSubStream::Next. The application must call Release on the ITSubStream interface to free resources associated with it.

Requirements

Requirement Value
Target Platform Windows
Header tapi3if.h (include Tapi3.h)

See also

IEnumSubStream

ITSubStream

Media Service Provider Interface (MSPI)