Update the by reference value of this variant with a new float value.
@param val the new float value
@exception SWTException <ul> <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant is not a (VT_BYREF | VT_R4) object</li> </ul>
@since 2.1
See Implementation
Update the by reference value of this variant with a new float value.
@param val the new float value
@exception SWTException <ul> <li>ERROR_CANNOT_CHANGE_VARIANT_TYPE when type of Variant is not a (VT_BYREF | VT_R4) object</li> </ul>
@since 2.1