[DllImport(mmdll)]



public static extern int waveInOpen(out IntPtr phwi, int uDeviceID, WaveFormat lpFormat, WaveDelegate dwCallback, int dwInstance, int dwFlags);

WaveInHelper.Try(WaveNative.waveInOpen(out m_WaveIn, device, format, m_BufferProc, 0, WaveNative.CALLBACK_FUNCTION));

WaveFormat structure declaration:

    [StructLayout(LayoutKind.Sequential)]



    public class WaveFormat



    {



        public short wFormatTag;



        public short nChannels;



        public int nSamplesPerSec;



        public int nAvgBytesPerSec;



        public short nBlockAlign;



        public short wBitsPerSample;



        public short cbSize;







        public WaveFormat(int rate, int bits, int channels)



        {



            wFormatTag = (short)WaveFormats.Pcm;



            nChannels = (short)channels;



            nSamplesPerSec = rate;



            wBitsPerSample = (short)bits;



            cbSize = 0;







            nBlockAlign = (short)(channels * (bits / 8));



            nAvgBytesPerSec = nSamplesPerSec * nBlockAlign;



        }



    }

I've tried to modify declaration with IntPtr.Zero instead of '0'. Or changing 'WaveFormat lpFormat'(argument) into 'ref WaveFormat lpFormat', but then i get'error 32'(bad format), thenrecording will not run also on x86 anymore giving me Access Volation.

Also I've tried compile it for only for x86 or AnyCpu, but it gives no results.

I'm working on it some about 7 days and i can't go forwad.

Sorry for my English.

I would begrateful if anyone can help me, it's very important for me.

I got solution, my visual studio project file was broken, i create new project, recopy it, and i set x86 platform. Now everything works.

I got solution, my visual studio project file was broken, i create new project, recopy it, and i set x86 platform. Now everything works.