Create a Variant object which represents an IUnknown interface as a VT_UNKNOWN.
<p>The caller is expected to have appropriately invoked unknown.AddRef() before creating this Variant.
@param unknown the IUnknown object that this Variant represents
See Implementation
Create a Variant object which represents an IUnknown interface as a VT_UNKNOWN.
<p>The caller is expected to have appropriately invoked unknown.AddRef() before creating this Variant.
@param unknown the IUnknown object that this Variant represents