func SetAttributes(ih *Ihandle, values string) {
cValues := C.CString(values)
defer C.free(unsafe.Pointer(cValues))
C.IupSetAttributes((*C.Ihandle)(ih), cValues)
}
func (h *Handle) SetAttributes(values string) {
cvalues := NewCS(values)
defer FreeCS(cvalues)
C.IupSetAttributes(h.p, cvalues)
}