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CEnumMediaTypes::QueryInterface (Compact 2013)

  • Artigo

3/26/2014

Retrieves a pointer to a specified interface on a component to which a client currently holds an interface pointer.

Syntax

HRESULT QueryInterface(
  REFIID iid,
  void** ppvObject 
);

Parameters

  • iid
    Specifies the IID of the interface being requested.

  • ppvObject
    Receives a pointer to an interface pointer to the object on return.

    If the interface specified in iid is not supported by the object, ppvObject is set to NULL.

Return Value

Returns S_OK if the interface is supported, S_FALSE if not.

Remarks

This member function implements the IUnknown::QueryInterface method and passes out references to the IEnumMediaTypes interface.

Override this class to return other interfaces on the object in the derived class.

Requirements

Header

dshow.h,
Streams.h

Library

ole32.lib,
Ole32auth.lib,
Strmbase.lib,
Strmiids.lib,
uuid.lib

See Also

Reference

CEnumMediaTypes Class