Returns the Java double represented by this Variant.
<p>If this Variant does not contain a Java double, an attempt is made to
coerce the Variant type into a Java double. If this fails, an error is thrown.
@return the Java double represented by this Variant
@exception SWTException <ul>
<li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into a double</li>
</ul>
Returns the Java double represented by this Variant.
<p>If this Variant does not contain a Java double, an attempt is made to coerce the Variant type into a Java double. If this fails, an error is thrown.
@return the Java double represented by this Variant
@exception SWTException <ul> <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant can not be coerced into a double</li> </ul>
@since 3.2