gtk/button_box.go
func (v *ButtonBox) GetChildSecondary(child IWidget) bool {
	c := C.gtk_button_box_get_child_secondary(v.native(), child.toWidget())
	return gobool(c)
}
func (v *ButtonBox) GetChildSecondary(child IWidget) bool {
	c := C.gtk_button_box_get_child_secondary(v.native(), child.toWidget())
	return gobool(c)
}
// GetChildSecondary() is a wrapper around gtk_button_box_get_child_secondary().