GtkHSeparator a horizontal separator. The #GtkHSeparator widget is a horizontal separator, used to group the widgets within a window. It displays a horizontal line with a shadow to make it appear sunken into the interface. The #GtkHSeparator widget is not used as a separator within menus. To create a separator in a menu create an empty #GtkSeparatorMenuItem widget using gtk_separator_menu_item_new() and add it to the menu with gtk_menu_append(). #GtkVSeparator a vertical separator. The #GtkHSeparator-struct struct contains private data only, and should be accessed using the functions below. Creates a new #GtkHSeparator. @Returns: a new #GtkHSeparator.