GtkVSeparator
a vertical separator.
The #GtkVSeparator widget is a vertical separator, used to group the
widgets within a window. It displays a vertical line with a shadow to
make it appear sunken into the interface.
#GtkHSeparator
a horizontal separator.
The #GtkVSeparator-struct struct contains private data only, and
should be accessed using the functions below.
Creates a new #GtkVSeparator.
@Returns: a new #GtkVSeparator.