This class defines a group that contains button items. This group is either a MouseButtonGroup or a DigitizerButtonGroup.

Autodesk.AutoCAD.Customization.ElementBase
    Autodesk.AutoCAD.Customization.VersionableElement
        Autodesk.AutoCAD.Customization.CustomizationElement
        Autodesk.AutoCAD.Customization.ICustomizationContainer
            Autodesk.AutoCAD.Customization.ButtonGroup

Public Class ButtonGroup
Inherits CustomizationElement
Inherits ICustomizationContainer

public class ButtonGroup : CustomizationElement, ICustomizationContainer;