Returns the timestamp of the last activity for this device.
In practice, this means the timestamp of the last event that was
received from the OS for this device. (GTK may occasionally produce
events for a device that are not received from the OS, and will not
update the timestamp).
Returns the timestamp of the last activity for this device.
In practice, this means the timestamp of the last event that was received from the OS for this device. (GTK may occasionally produce events for a device that are not received from the OS, and will not update the timestamp).