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    GObject
    ╰── GInitiallyUnowned
        ╰── GtkObject
            ╰── GtkWidget
                ╰── GtkContainer
                    ╰── GtkBox
                        ╰── GtkButtonBox
                            ╰── GtkHButtonBox
GtkHButtonBox implements AtkImplementorIface, GtkBuildable and GtkOrientable.
gint
gtk_hbutton_box_get_spacing_default (void);
gtk_hbutton_box_get_spacing_default is deprecated and should not be used in newly-written code.
GtkButtonBoxStyle
gtk_hbutton_box_get_layout_default (void);
gtk_hbutton_box_get_layout_default is deprecated and should not be used in newly-written code.
void
gtk_hbutton_box_set_spacing_default (gint spacing);
gtk_hbutton_box_set_spacing_default is deprecated and should not be used in newly-written code.
void
gtk_hbutton_box_set_layout_default (GtkButtonBoxStyle layout);
gtk_hbutton_box_set_layout_default is deprecated and should not be used in newly-written code.