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CComAggObject::QueryInterface

Retrieves a pointer to the requested interface.

STDMETHOD(QueryInterface)( 
   REFIID iid,  
   void ** ppvObject 
); 
template <class Q> 
HRESULT STDMETHODCALLTYPE QueryInterface( 
   Q** pp 
);

Parameters

  • iid
    [in] The identifier of the interface being requested.

  • ppvObject
    [out] A pointer to the interface pointer identified by iid. If the object does not support this interface, ppvObject is set to NULL.

  • pp
    [out] A pointer to the interface pointer identified by type Q. If the object does not support this interface, pp is set to NULL.

Return Value

A standard HRESULT value.

Remarks

If the requested interface is IUnknown, QueryInterface returns a pointer to the aggregated object's own IUnknown and increments the reference count. Otherwise, this method queries for the interface through the CComContainedObject member, m_contained.

Requirements

Header: atlcom.h

See Also

Reference

CComAggObject Class