public Rect BeginHorizontal(int id, params GUILayoutOption[] options) { GUISlideGroup.SlideGroupInternal slideGroupInternal = (GUISlideGroup.SlideGroupInternal)GUILayoutUtility.BeginLayoutGroup(GUIStyle.none, options, typeof(GUISlideGroup.SlideGroupInternal)); slideGroupInternal.SetID(this, id); slideGroupInternal.isVertical = false; return(slideGroupInternal.m_FinalRect); }