Autodesk.AutoCAD.Customization.RibbonPanelResizeStyle Enumeration

Public Enum RibbonPanelResizeStyle
  CollapseLast = 2
  Default = 0
  NoCollapse = 1
End Enum

public enum RibbonPanelResizeStyle {
  CollapseLast = 2,
  Default = 0,
  NoCollapse = 1
}

Members	Description
CollapseLast = 2	The panel should be the last panel in the tab to be reduced in size.
Default = 0	The panel will be re-sized using standard logic, that includes its location in the ribbon tab.
NoCollapse = 1	The panel should not be reduced in size.