public static extern int waveInOpen(out IntPtr phwi, int uDeviceID, [In, MarshalAs(UnmanagedType.LPStruct)] WaveFormat lpFormat, WaveInDelegate dwCallback, IntPtr dwInstance, WaveOpenFlags dwFlags);
public static extern int Open(
out IntPtr hwi,
int uDeviceID,
[In, MarshalAs(UnmanagedType.LPStruct)] WaveFormatEx b,
WaveInDelegate dwCallback,
IntPtr dwCallbackInstance,
WaveOpenFlags dwFlags);