Note
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T*** operator =(** T***** lp );
T*** operator =( const CComQIPtr<** T**,** piid >& lp );
T*** operator =( IUnknown*** lp );
Remarks
When assigning a pointer type derived from T, the operator sets p to the given T*. When assigning a CComQIPtr, the operator sets p to the member pointer of lp.
When assigning a pointer type not derived from T, the operator calls QueryInterface to set p to an interface pointer corresponding to piid. If QueryInterface fails, p is set to NULL.