The LAnnButton class is derived from LAnnotation. This class contains the support for creating, and managing Button annotation objects. You can use objects created from this class to set/get the different properties of a Button annotation object.
For more information about the Button annotation object, refer to Button Annotation Object
You must load all required libraries using LBase::LoadLibraries before using the classes.
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.