Hi Emil,

ScrollBar height is a system setting, so you can get the height from the SystemInformation class:

SystemInformation.HorizontalScrollBarHeight

As to whether or not the horizontal scrollbar is visible, as long as the FormattedTextEditor is visible and has painted at least once, you could get this using the UIElements:

        private bool HasHorizontalScrollBar(UltraFormattedTextEditor ultraFormattedTextEditor)
        {
            ScrollableAreaUIElement scrollableAreaUIElement = ultraFormattedTextEditor.UIElement.GetDescendant(typeof(ScrollableAreaUIElement)) as ScrollableAreaUIElement;
            if (scrollableAreaUIElement != null)
            {
                foreach(UIElement element in scrollableAreaUIElement.ChildElements)
                {
                    ScrollBarUIElement scrollBarUIElement = element as ScrollBarUIElement;
                    if (scrollBarUIElement != null)
                    {
                        if (scrollBarUIElement.Orientation == Orientation.Horizontal)
                        {
                            return true;
                        }
                    }
                }
            }

            return false;
        }