signal callback delegate or function to connect
void callback(gdk.device.Device device, gdk.seat.Seat seat)
device the newly added #GdkDevice. (optional)
seat 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 DeviceAdded signal.
The ::device-added signal is emitted when a new input device is related to this seat.