Gets the current location of device in double precision. As a slave device's
coordinates are those of its master pointer, this function
may not be called on devices of type gdk.types.DeviceType.Slave,
unless there is an ongoing grab on them. See gdk.device.Device.grab.
Gets the current location of device in double precision. As a slave device's coordinates are those of its master pointer, this function may not be called on devices of type gdk.types.DeviceType.Slave, unless there is an ongoing grab on them. See gdk.device.Device.grab.