Returns the IUnknown object represented by this Variant.
<p>If this Variant does not contain an IUnknown object, an attempt is made to
coerce the Variant type into an IUnknown object. If this fails, an error is
thrown.
@return the IUnknown object represented by this Variant
@exception SWTException <ul>
<li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into
an IUnknown object</li>
</ul>
Returns the IUnknown object represented by this Variant.
<p>If this Variant does not contain an IUnknown object, an attempt is made to coerce the Variant type into an IUnknown object. If this fails, an error is thrown.
@return the IUnknown object represented by this Variant
@exception SWTException <ul> <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into an IUnknown object</li> </ul>