Get value(s) of complex property key.
Return: null terminated array of property values, which are themselves an array of property attributes, only null if empty. It must be freed by the client using taglib_complex_property_free().
Get value(s) of complex property key.
Return: null terminated array of property values, which are themselves an array of property attributes, only null if empty. It must be freed by the client using taglib_complex_property_free().