gdk:device-product-id (object)

object -- a gdk:device object
product-id -- a string with the product ID, or nil

Accessor of the product-id slot of the gdk:device class. The gdk:device-product-id function returns the product ID of the device, or nil if the information could not be obtained. The ID is retrieved from the device, and is thus constant for it. See the gdk:device-vendor-id function for more information.