A #GClosure.
A #GValue to store the return value. May be %NULL if the callback of closure doesn't return a value.
The length of the @param_values array.
An array of #GValues holding the arguments on which to invoke the callback of closure.
The invocation hint given as the last argument to g_closure_invoke().
Additional data specified when registering the marshaller, see g_closure_set_marshal() and g_closure_set_meta_marshal()
A #GClosureMarshal function for use with signals with handlers that take a flags type as an argument and return a boolean. If you have such a signal, you will probably also need to use an accumulator, such as g_signal_accumulator_true_handled().