- 40 -17.6. BacklightSets or acquires the ON/OFF status of the backlight.For a description of all members of this class, refer to section “18.6. Backlight".¾Syntax[VB]Public Class Backlight[C#]public class Backlight¾NamespaceDNWA.BHTCL¾AssemblyDNWA.BHT400CL.dll