Device.getPositionDouble

void getPositionDouble(out gdk.screen.Screen screen, out double x, out double y)

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].

Parameters

`screen`	location to store the #GdkScreen the device is on, or null.
`x`	location to store root window X coordinate of device, or null.
`y`	location to store root window Y coordinate of device, or null.