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CMediaSample::QueryInterface (Windows Embedded CE 6.0)

1/6/2010

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

This method must call IUnknown::AddRef on the pointer it returns.

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.

Requirements

Windows Embedded CE Windows CE 2.12 and later
Note Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements
For more information, see Setting Up the Build Environment, Version 2.12 requires DXPAK 1.0 or later

See Also

Reference

CMediaSample Class