The device_changed signal is emitted whenever a device has changed in the hierarchy, either slave devices being disconnected from their master device or connected to another one, or master devices being added or removed a slave device.
If a slave device is detached from all master devices ( get_associated_device returns null), its DeviceType will change to gdk_device_type_floating, if it's attached, it will change to gdk_device_type_slave.
| device |
the Device that changed. |