gtk-sharp 2.12.0.0 Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details. A horizontal ruler. A horizontal ruler is typically used to show the horizontal location of the mouse in the window and to display the horizontal size of the window in the specified units. The available units of measurement are , and . The default is . A horizontal ruler is typically used above or below another widget such as a . Note:- This widget is considered too specialized for GTK+, and will likely be moved to some other package in the future. Gtk.Ruler Constructor Internal constructor Pointer to the C object. This is an internal constructor, and should not be used by user code. Constructor Creates a new horizontal ruler. Property GLib.GType GType Property. a Returns the native value for . Constructor Protected Constructor. a Chain to this constructor if you have manually registered a native value for your subclass. System.Obsolete