gtk/gtk.go
func RadioButtonNewWithLabel(group *glib.SList, label string) (*RadioButton, error) {
	cstr := C.CString(label)
	defer C.free(unsafe.Pointer(cstr))
	c := C.gtk_radio_button_new_with_label(cGSList(group), (*C.gchar)(cstr))
	if c == nil {
		return nil, nilPtrErr
	}
	return wrapRadioButton(glib.Take(unsafe.Pointer(c))), nil
}
func RadioButtonNewWithLabel(group *glib.SList, label string) (*RadioButton, error) {
	cstr := C.CString(label)
	defer C.free(unsafe.Pointer(cstr))
	c := C.gtk_radio_button_new_with_label(cGSList(group), (*C.gchar)(cstr))
	if c == nil {
		return nil, nilPtrErr
	}
	return wrapRadioButton(glib.Take(unsafe.Pointer(c))), nil
}
// RadioButtonNewWithLabel is a wrapper around
// gtk_radio_button_new_with_label().