signal callback delegate or function to connect
bool callback(gdk.types.ModifierType state, gtk.event_controller_key.EventControllerKey eventControllerKey)
state the bitmask, representing the new state of modifier keys and pointer buttons. (optional)
eventControllerKey the instance the signal is connected to (optional)
Returns
Yes.After to execute callback after default handler, No.After to execute before (default)
Signal ID
Connect to Modifiers signal.
Emitted whenever the state of modifier keys and pointer buttons change.