public static extern unsafe uint waveOutUnprepareHeader(IntPtr hwo, ref WAVEHDR_TAG pwh, uint cbwh);
public static extern unsafe uint waveOutWrite(IntPtr hwo, ref WAVEHDR_TAG pwh, uint cbwh);
public static extern unsafe uint waveOutUnprepareHeader(IntPtr hwo, ref WAVEHDR_TAG pwh, uint cbwh);
public static extern unsafe uint waveOutWrite(IntPtr hwo, ref WAVEHDR_TAG pwh, uint cbwh);