signal callback delegate or function to connect
glib.error.ErrorWrap callback(gda.set.Set set)
set the instance the signal is connected to (optional)
Returns NULL if set's contents has been validated, or a #GError otherwise.
Yes.After to execute callback after default handler, No.After to execute before (default)
Signal ID
Connect to ValidateSet signal.
Gets emitted when gda.set.Set.isValid is called, use this signal to control which combination of values set's holder can have (for example to implement some business rules)