QTextToSpeech volume property bug

Look: https://doc.qt.io/qt-5.10/qtexttospeech.html#volume-prop at volume property is defined as double, but notifier signal is declared as

void 	volumeChanged(int volume)

Simple way to workaround is connect this signal to some slot like: void function(int) and in this slot get current volume value from QTextToSpeech object (you have got access to it in this case).