func (v *Label) SetLabel(str string) {
	cstr := C.CString(str)
	defer C.free(unsafe.Pointer(cstr))
	C.gtk_label_set_label(v.native(), (*C.gchar)(cstr))
}
func (v *Label) SetLabel(str string) {
	cstr := C.CString(str)
	defer C.free(unsafe.Pointer(cstr))
	C.gtk_label_set_label(v.native(), (*C.gchar)(cstr))
}
// SetLabel is a wrapper around gtk_label_set_label().