private void subscribeToEvents()
{
if (_phraseSpeakScanner != null)
{
_phraseSpeakScanner.EvtDone += PhraseSpeakFormEvtDone;
_phraseSpeakScanner.FormClosing += PhraseSpeakFormClosing;
_phraseSpeakScanner.EvtShowScanner += PhraseSpeakFormEvtShowScanner;
}
}