gtk-sharp 2.8.0.0 Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details. A VBox is a specific type of for packing widgets vertically. using System; using Gtk; class VBoxTester { static void Main () { Application.Init (); Window myWindow = new Window ("VBox Widget"); VBox myBox = new VBox (false, 4); //Add the box to a Window container myWindow.Add (myBox); myWindow.ShowAll (); Application.Run (); } static void AddButton (VBox box) { box.PackStart (new Button ("Button"), true, false, 0); } } Other ways of laying out widgets include using a horizontal box, (see ), a table, (see ), button boxes, etc. Useful methods for manipulating boxes can be found in the superclass for HBox, . Gtk.Box Constructor Internal constructor Pointer to the C object. This is an internal constructor, and should not be used by user code. Constructor The main way to create a new VBox If , all widgets in the box are forced to be equally sized. The number of pixels to place between each widget in the box. Property GLib.GType GType property. a Returns the native GObject type for . Constructor Protected constructor. a Chain to this constructor from subclasses when you manually register a for your subclass. System.Obsolete(Message=null, IsError=False) Constructor VBox Constructor. Instantiates a object using default values for the spacing and homogeneous attributes.