Base class for GtkHButtonBox and GtkVButtonBox.
GtkButtonBox is a base class providing a series of layout options for buttons packed into GtkHButtonBox and GtkVButtonBox container widgets.
Please note that in GTK+ 2.0 all reference to spacing will be completely removed; this is because these values are always relative in GtkButtonBox classes, and should be adjusted internally.
get_spacing() Returns spacing between buttons. *deprecated in GTK2* get_layout() Retrieves the layout style setting. set_spacing() Sets spacing between buttons. *deprecated in GTK2* set_layout() Sets the button layout style. set_child_size() Sets minimum child size. *deprecated in GTK2* set_child_ipadding() Sets child's internal padding. *deprecated in GTK2*