WIN32OLE_METHOD#return_type_detail
Instance Public methods
Returns detail information of return value type of method. The information
is array.
tobj = WIN32OLE_TYPE.new('Microsoft Excel 9.0 Object Library', 'Workbooks')
method = WIN32OLE_METHOD.new(tobj, 'Add')
p method.return_type_detail # => ["PTR", "USERDEFINED", "Workbook"]