IEnumFilters::Next

  • 项目

This method retrieves the specified number of filters in the enumeration sequence.

HRESULT Next(
  ULONG cFilters,
  IBaseFilter** ppFilter,
  ULONG* pcFetched
);

Parameters

  • cFilters
    [in] Number of filters to place.
  • ppFilter
    [out] Array in which to place IBaseFilter pointers.
  • pcFetched
    [out] Actual number of filters placed in the array.

Return Values

Returns an HRESULT value that depends on the implementation. HRESULT can be one of the following standard constants or other values not listed.

Value Description
E_FAIL Failure.
E_POINTER Null pointer argument.
E_INVALIDARG Invalid argument.
E_NOTIMPL Method is not supported.
S_OK or NOERROR Success.

Remarks

The interface returned by this method has had its reference count incremented. Be sure to use IUnknown::Release on the interface to decrement the reference count when you have finished using the interface.

Requirements

DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
Header:

Last updated on Wednesday, April 13, 2005

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