gtk-sharp Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details. Gtk.MenuItem a menu item used to tear off and reattach its menu. a is a special which is used to tear off and reattach its menu. When its menu is shown normally, the is drawn as a dotted line indicating that the menu can be torn off. Activating it causes its menu to be torn off and displayed in its own window as a tearoff menu. When its menu is shown as a tearoff menu, the is drawn as a dotted line which has a left pointing arrow graphic indicating that the tearoff menu can be reattached. Activating it will erase the tearoff menu window. Constructor Creates a new Constructor Pointer to the C object. Internal constructor This is an internal constructor, and should not be used by user code. Property GLib.GType GType Property. a Returns the native value for .