signal callback delegate or function to connect
void callback(int index, gtk.entry_completion.EntryCompletion entryCompletion)
index the index of the activated action (optional)
entryCompletion the instance the signal is connected to (optional)
Yes.After to execute callback after default handler, No.After to execute before (default)
Signal ID
Connect to ActionActivated signal.
Gets emitted when an action is activated.