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C# MIDI controller interface.

6-Sep-12 3:18

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Dave

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Jumpin' Jeff5-Sep-12 16:38

5-Sep-12 16:38

I have been scouring the net looking for updated information on interfacing a C# applilcation to a MIDI control interface (M-Audio Xponent). The best I could come up with is PureMidi, Midi-dot-net, and MIDI out setter here on codeplex. Unfortunately, I need the raw information, and need to strip out hundreds of lines of code to make it work. I can get the input and output devices fine, but I need to send simple MidiOutshortmsg and MidiOutLongMsg (sysex), and recieve MidiInshortMsgs. None of the examples really touch on long messages, and all color the short into actual deciphered note info that I don't want. The examples are much too complex for my needs. I need something very simple without 10 support files full of nonsence to sift through and strip down. Most everything is also for vc2005 or before, and are in dreadful need up update to VC2010/2012. The Midi toolkit is useless to me. It won't compile,and I can't determine why. I've spent the last week looking, and the 3 examples provided are the best usefull examples I've found to date, but are much too complex as stated. Please help, I'm beyond frustrated. All I need are simple examples to send and recieve raw hex data. I can parse it from there.
Thanks for any assistance you can provide.

Jeff

DaveyM695-Sep-12 22:17

5-Sep-12 22:17

Hi Jeff,

midiOutShortMsg is quite simple, midiOutLongMsg is more complex due to the way that the MIDIHDR structure is used.
Receiving SysEx can be tricky as you will need to add and control the receive buffers.

I can help you with this but I don't think I'll have time until around this time tomorrow unfortunately. If you haven't marked this as solved by then I'll dig out some code to assist.

In the meantime, for output you're going to need these functions:

midiOutGetNumDevs
midiOutProc (this will be a delegate in C#)
midiOutOpen
midiOutShortMsg
midiOutPrepareHeader
midiOutLongMsg
midiOutUnprepareHeader
midiOutClose

and these structs

MIDIOUTCAPS
MIDIHDR

You will find all the definitions for these on MSDN. They are shown in C++. You will need to create PInvoke versions (to call into Winmm.dll) of these in C#. Search your system for MMSystem.h as there are many things in there (such as the values for constants used etc) that will be handy.

Edit: 20 hrs and no other answers, give me 8 to get some sleep (UK) and I'll post some working code and pointers. Do you have a link to the MIDI implementation chart for the device you're trying to communicate with?

modified 6-Sep-12 19:39pm.

Jumpin' Jeff6-Sep-12 14:26

6-Sep-12 14:26

Dave, Thanks! Yes! I do have the MIDI command chart for the Xponent, but I will be making this mostly generic. I don't actually have to recieve sysex, but that would be an added benefit.

I only really need to send a single sysex message to put the unit into advanced mode, and another message to put it back to normal.

I've also been looking at an autohotkey example of Midiin and Midiout that supposedly has sysex, but I have yet to see anything in it refering to MidiOutLongMsg. I appriciate your assistance and willingness to assist. Thanks again!

Jeff

DaveyM697-Sep-12 0:57

7-Sep-12 0:57

Hi Jeff,

Two versions, one simple and one more complex. Any questions, just ask Smile | :)

This is using a console app and procedurally rather than using OOP as it's simpler to understand. This is as simple as I can make it!

using System;
using System.Runtime.InteropServices;
using System.Threading;

namespace SimpleSysExSender
{
    class Program
    {
        const int MMSYSERR_NOERROR = 0;
        const int MIDIERR_STILLPLAYING = 65;
        static readonly int MidiHdrSize = Marshal.SizeOf(typeof(MIDIHDR));

        static void Main(string[] args)
        {
            int id = 0;
            byte[] data = new byte[] { 0xF0, 0x7E, 0x7F, 0x09, 0x01, 0xF7 }; // GM On


            if (id >= 0 && id < midiOutGetNumDevs())
            {
                IntPtr handle;
                if (midiOutOpen(out handle, id, IntPtr.Zero, IntPtr.Zero, 0) == MMSYSERR_NOERROR)
                {

                    IntPtr dataHandle = Marshal.AllocHGlobal(data.Length);
                    Marshal.Copy(data, 0, dataHandle, data.Length);
                    MIDIHDR buffer = new MIDIHDR(dataHandle, data.Length);
                    GCHandle gcHandle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
                    IntPtr address = gcHandle.AddrOfPinnedObject();

                    if (midiOutPrepareHeader(handle, address, MidiHdrSize) == MMSYSERR_NOERROR)
                    {
                        midiOutLongMsg(handle, address, MidiHdrSize);
                        while (midiOutUnprepareHeader(handle, address, MidiHdrSize) == MIDIERR_STILLPLAYING)
                            Thread.Sleep(1);
                    }

                    gcHandle.Free();
                    Marshal.FreeHGlobal(dataHandle);
                    midiOutClose(handle);
                }
            }
        }

        [DllImport("Winmm.dll", SetLastError = true)]
        public static extern int midiOutClose(IntPtr hmo);

        [DllImport("Winmm.dll", SetLastError = true)]
        public static extern int midiOutGetNumDevs();

        [DllImport("Winmm.dll", SetLastError = true)]
        public static extern int midiOutLongMsg(IntPtr hmo, IntPtr lpMidiOutHdr, int cbMidiOutHdr);

        [DllImport("Winmm.dll", SetLastError = true)]
        public static extern int midiOutOpen(out IntPtr lphmo, int uDeviceID, IntPtr dwCallback, IntPtr dwCallbackInstance, int dwFlags);

        [DllImport("Winmm.dll", SetLastError = true)]
        public static extern int midiOutPrepareHeader(IntPtr hmo, IntPtr lpMidiOutHdr, int cbMidiOutHdr);

        public delegate void MidiOutProc(IntPtr hmo, int wMsg, IntPtr dwInstance, IntPtr dwParam1, IntPtr dwParam2);

        [DllImport("Winmm.dll", SetLastError = true)]
        public static extern int midiOutUnprepareHeader(IntPtr hmo, IntPtr lpMidiOutHdr, int cbMidiOutHdr);
    }

    [StructLayout(LayoutKind.Sequential)]
    internal struct MIDIHDR
    {
        private IntPtr lpData;
        private int dwBufferLength; // keep this under 16KB
        private int dwBytesRecorded;
        private IntPtr dwUser;
        private int dwFlags;
        private IntPtr lpNext;
        private IntPtr reserved;
        private int dwOffset;
        private IntPtr dwReserved;

        public MIDIHDR(IntPtr lpData, int dwBufferLength)
        {
            this.lpData = lpData;
            this.dwBufferLength = dwBufferLength;
            dwBytesRecorded = dwBufferLength;
            dwUser = IntPtr.Zero;
            dwFlags = 0;
            lpNext = IntPtr.Zero;
            reserved = IntPtr.Zero;
            dwOffset = 0;
            dwReserved = IntPtr.Zero;
        }
    }
}

This is a more OOP version of the same thing (sorry for the length!). More robust and more comments, but may be overkill for your requirements:

using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.Runtime.InteropServices;
using System.Threading;

namespace MidiSysExSender
{
    class Program
    {
        static void Main(string[] args)
        {
            // Check there are MIDI outs!
            if (MidiOutputCollection.Outputs.Count > 0)
            {
                // I'm assuming your device is the first one
                MidiOutput output = MidiOutputCollection.Outputs[0];
                // Open the output
                output.Open();

                output.SendSysEx(MidiSystemExclusiveMessage.GeneralMidiOn);

                // Close the output
                output.Close();
                Console.WriteLine("Done");
            }
            else
                Console.WriteLine("No MIDI Outs found");
            Console.ReadKey();
        }
    }

    public class MidiOutput
    {
        private NativeMethods.MidiOutProc callback;
        private MIDIOUTCAPS caps;
        private IntPtr handle;
        private int id;

        internal MidiOutput(int id)
        {
            // Get device capabilities/information
            MIDIOUTCAPS caps;
            int nativeResult = NativeMethods.midiOutGetDevCaps(id, out caps, MIDIOUTCAPS.Size);
            if (nativeResult == NativeMethods.MMSYSERR_NOERROR)
            {
                callback = Callback;
                this.caps = caps;
                this.id = id;
            }
            else
                // This should really be a custom MidiException with the message 
                // set to text retrieved from MidiOutGetErrorText
                throw new InvalidOperationException();
        }

        public int ChannelMask
        {
            get { return caps.ChannelMask; }
        }
        public Version DriverVersion
        {
            get { return caps.DriverVersion; }
        }
        public int Id
        {
            get { return id; }
        }
        public bool IsOpen
        {
            get { return handle != IntPtr.Zero; }
        }
        public int ManufacturerId
        {
            get { return caps.ManufacturerId; }
        }
        public string Name
        {
            get { return caps.Name; }
        }
        public int Notes
        {
            get { return caps.Notes; }
        }
        public int ProductId
        {
            get { return caps.ProductId; }
        }
        public MidiOutputTechnology Technology
        {
            get { return caps.Technology; }
        }
        public int Voices
        {
            get { return caps.Voices; }
        }
        public MidiOutputSupport Support
        {
            get { return caps.Support; }
        }

        private void Callback(IntPtr hmo, int wMsg, IntPtr dwInstance, IntPtr dwParam1, IntPtr dwParam2)
        {
            // Handle any MIDI Out callbacks here
        }
        public void Close()
        {
            if (IsOpen)
            {
                int nativeResult = NativeMethods.midiOutClose(handle);
                if (nativeResult == NativeMethods.MMSYSERR_NOERROR)
                    handle = IntPtr.Zero;
                else
                    // This should really be a custom MidiException with the message 
                    // set to text retrieved from MidiOutGetErrorText
                    throw new InvalidOperationException();
            }
        }
        public void Open()
        {
            if (!IsOpen)
            {
                IntPtr handle;
                int nativeResult = NativeMethods.midiOutOpen(out handle, id, callback, IntPtr.Zero, NativeMethods.CALLBACK_FUNCTION);
                if (nativeResult == NativeMethods.MMSYSERR_NOERROR)
                    this.handle = handle;
                else
                    // This should really be a custom MidiException with the message 
                    // set to text retrieved from MidiOutGetErrorText
                    throw new InvalidOperationException();
            }
        }
        public void SendSysEx(MidiSystemExclusiveMessage sysEx)
        {
            if (!IsOpen)
                Open();
            MIDIHDR buffer = new MIDIHDR(sysEx);
            // We need to pin the buffer so it doesn't move
            GCHandle gcHandle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
            IntPtr address = gcHandle.AddrOfPinnedObject();
            // prepare buffer
            int nativeResult = NativeMethods.midiOutPrepareHeader(handle, address, MIDIHDR.Size);
            if (nativeResult == NativeMethods.MMSYSERR_NOERROR)
            {
                // Send message
                NativeMethods.midiOutLongMsg(handle, address, MIDIHDR.Size);

                // unprepare buffer
                while (NativeMethods.midiOutUnprepareHeader(handle, address, MIDIHDR.Size) == NativeMethods.MIDIERR_STILLPLAYING)
                    Thread.Sleep(1);
            }

            // IMPORTANT! Free all memory once we're done.
            gcHandle.Free();
            buffer.Free();
        }
        public override string ToString()
        {
            return string.Format(CultureInfo.InvariantCulture, "MIDI Output {0}: {1}", id, Name);
        }
    }

    // Singleton that creates a MidiOutput for each MIDI Out installed.
    // For singleton see: http://csharpindepth.com/Articles/General/Singleton.aspx
    // Wraps a List that holds the MIDI Outs
    public class MidiOutputCollection : IDisposable, IEnumerable<MidiOutput>
    {
        private List<MidiOutput> list;

        private MidiOutputCollection()
        {
            // Get how many installed outputs, this gives us the ids zero based (0 to count-1)
            int count = NativeMethods.midiOutGetNumDevs();
            list = new List<MidiOutput>(count);
            if (count > 0)
            {
                for (int id = 0; id < count; id++)
                    list.Add(new MidiOutput(id));
            }
        }
        // We need to ensure that all MIDI Outs are closed before we exit.
        ~MidiOutputCollection()
        {
            Dispose(false);
        }

        public MidiOutput this[int index]
        {
            get { return list[index]; }
        }
        public int Count
        {
            get { return list.Count; }
        }
        public static MidiOutputCollection Outputs
        {
            get { return InstanceHolder.Instance; }
        }
        public void Dispose()
        {
            Dispose(true);
            // Commenting out this line as Outputs may still need disposing if reused.
            // GC.SuppressFinalize(this);
        }
        private void Dispose(bool disposing)
        {
            if (disposing)
            { }
            foreach (MidiOutput midiOutput in this)
                midiOutput.Close();
        }
        public IEnumerator<MidiOutput> GetEnumerator()
        {
            return list.GetEnumerator();
        }
        IEnumerator IEnumerable.GetEnumerator()
        {
            return list.GetEnumerator();
        }
        public int IndexOf(MidiOutput midiOutput)
        {
            return list.IndexOf(midiOutput);
        }

        private class InstanceHolder
        {
            // Explicit static constructor to tell C# compiler
            // not to mark type as beforefieldinit
            static InstanceHolder()
            { }

            private static readonly MidiOutputCollection instance = new MidiOutputCollection();

            internal static MidiOutputCollection Instance
            {
                get { return instance; }
            }
        }
    }

    public enum MidiOutputTechnology
    {
        Undefined,
        Port = NativeMethods.MOD_MIDIPORT,
        Synthesizer = NativeMethods.MOD_SYNTH,
        SquareWaveSynthesizer = NativeMethods.MOD_SQSYNTH,
        FMSynthesizer = NativeMethods.MOD_FMSYNTH,
        MidiMapper = NativeMethods.MOD_MAPPER,
        WavetableSynthesizer = NativeMethods.MOD_WAVETABLE,
        SoftwareSynthesizer = NativeMethods.MOD_SWSYNTH
    }

    [Flags]
    public enum MidiOutputSupport
    {
        None = 0,
        PatchCaching = NativeMethods.MIDICAPS_CACHE,
        StereoVolume = NativeMethods.MIDICAPS_LRVOLUME,
        StreamOut = NativeMethods.MIDICAPS_STREAM,
        Volume = NativeMethods.MIDICAPS_VOLUME,
    }

    // Wraps a list of data bytes automatically inserting start and end of exclusive bytes
    public class MidiSystemExclusiveMessage : IEnumerable<byte>
    {
        public const byte SOX = 0xF0;
        public const byte EOX = 0xF7;
        public const byte MaxByte = 0x7F;

        public static MidiSystemExclusiveMessage GeneralMidiOn = new MidiSystemExclusiveMessage(0x7E, 0x7F, 0x09, 0x01);
        public static MidiSystemExclusiveMessage GeneralMidiOff = new MidiSystemExclusiveMessage(0x7E, 0x7F, 0x09, 0x02);

        private List<byte> list;

        public MidiSystemExclusiveMessage(params byte[] data)
        {
            if (data == null)
                throw new ArgumentNullException("data");
            list = new List<byte>(data.Length + 2);
            list.Add(SOX);
            foreach (byte b in data)
                if (b <= MaxByte)
                    list.Add(b);
            list.Add(EOX);
            list.TrimExcess();
        }

        public byte this[int index]
        {
            get { return list[index]; }
        }
        public int Count
        {
            get { return list.Count; }
        }

        public IEnumerator<byte> GetEnumerator()
        {
            return list.GetEnumerator();
        }
        IEnumerator IEnumerable.GetEnumerator()
        {
            return list.GetEnumerator();
        }
        public byte[] ToArray()
        {
            return list.ToArray();
        }
    }

    #region Interop

    internal static class NativeMethods
    {
        public const int MAXPNAMELEN = 32;

        public const int MOD_MIDIPORT = 1;
        public const int MOD_SYNTH = 2;
        public const int MOD_SQSYNTH = 3;
        public const int MOD_FMSYNTH = 4;
        public const int MOD_MAPPER = 5;
        public const int MOD_WAVETABLE = 6;
        public const int MOD_SWSYNTH = 7;

        public const int MIDICAPS_VOLUME = 0x0001;
        public const int MIDICAPS_LRVOLUME = 0x0002;
        public const int MIDICAPS_CACHE = 0x0004;
        public const int MIDICAPS_STREAM = 0x0008;

        private const int MIDIERR_BASE = 64;
        public const int MMSYSERR_NOERROR = 0;
        public const int MIDIERR_STILLPLAYING = (MIDIERR_BASE + 1);

        public const int CALLBACK_FUNCTION = 0x00030000;

        // http://msdn.microsoft.com/en-us/library/windows/desktop/dd798468(v=vs.85).aspx
        [DllImport("Winmm.dll", SetLastError = true)]
        public static extern int midiOutClose(IntPtr hmo);

        // http://msdn.microsoft.com/en-us/library/windows/desktop/dd798469(v=vs.85).aspx
        [DllImport("Winmm.dll", SetLastError = true)]
        public static extern int midiOutGetDevCaps(int uDeviceID, out MIDIOUTCAPS lpMidiOutCaps, int cbMidiOutCaps);

        // http://msdn.microsoft.com/en-us/library/windows/desktop/dd798472(v=vs.85).aspx
        [DllImport("Winmm.dll", SetLastError = true)]
        public static extern int midiOutGetNumDevs();

        // http://msdn.microsoft.com/en-us/library/windows/desktop/dd798474(v=vs.85).aspx
        [DllImport("Winmm.dll", SetLastError = true)]
        public static extern int midiOutLongMsg(IntPtr hmo, IntPtr lpMidiOutHdr, int cbMidiOutHdr);

        // http://msdn.microsoft.com/en-us/library/windows/desktop/dd798476(v=vs.85).aspx
        [DllImport("Winmm.dll", SetLastError = true)]
        public static extern int midiOutOpen(out IntPtr lphmo, int uDeviceID, MidiOutProc dwCallback, IntPtr dwCallbackInstance, int dwFlags);

        // http://msdn.microsoft.com/en-us/library/windows/desktop/dd798477(v=vs.85).aspx
        [DllImport("Winmm.dll", SetLastError = true)]
        public static extern int midiOutPrepareHeader(IntPtr hmo, IntPtr lpMidiOutHdr, int cbMidiOutHdr);

        // http://msdn.microsoft.com/en-us/library/windows/desktop/dd798478(v=vs.85).aspx
        public delegate void MidiOutProc(IntPtr hmo, int wMsg, IntPtr dwInstance, IntPtr dwParam1, IntPtr dwParam2);

        // http://msdn.microsoft.com/en-us/library/windows/desktop/dd798482(v=vs.85).aspx
        [DllImport("Winmm.dll", SetLastError = true)]
        public static extern int midiOutUnprepareHeader(IntPtr hmo, IntPtr lpMidiOutHdr, int cbMidiOutHdr);
    }

    // http://msdn.microsoft.com/en-us/library/windows/desktop/dd798467(v=vs.85).aspx
    [StructLayout(LayoutKind.Sequential)]
    internal struct MIDIOUTCAPS
    {
        public static readonly int Size = Marshal.SizeOf(typeof(MIDIOUTCAPS));

        private short wMid;
        private short wPid;
        private int vDriverVersion;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = NativeMethods.MAXPNAMELEN)]
        private string szPname;
        private short wTechnology;
        private short wVoices;
        private short wNotes;
        private short wChannelMask;
        private int dwSupport;

        public int ManufacturerId
        {
            get { return wMid; }
        }
        public int ProductId
        {
            get { return wPid; }
        }
        public Version DriverVersion
        {
            get { return new Version((vDriverVersion >> 8) & 0xFF, vDriverVersion & 0xFF, 0, 0); }
        }
        public string Name
        {
            get { return szPname; }
        }
        public MidiOutputTechnology Technology
        {
            get { return (MidiOutputTechnology)wTechnology; }
        }
        public int Voices
        {
            get { return wVoices; }
        }
        public int Notes
        {
            get { return wNotes; }
        }
        public int ChannelMask
        {
            get { return wChannelMask & 0xFFFF; }
        }
        public MidiOutputSupport Support
        {
            get { return (MidiOutputSupport)dwSupport; }
        }
    }

    // http://msdn.microsoft.com/en-us/library/windows/desktop/dd798449(v=vs.85).aspx
    [StructLayout(LayoutKind.Sequential)]
    internal struct MIDIHDR
    {
        public static readonly int Size = Marshal.SizeOf(typeof(MIDIHDR));

        private IntPtr lpData;
        private int dwBufferLength; // keep this under 16KB
        private int dwBytesRecorded;
        private IntPtr dwUser;
        private int dwFlags;
        private IntPtr lpNext;
        private IntPtr reserved;
        private int dwOffset;
        private IntPtr dwReserved;

        public MIDIHDR(MidiSystemExclusiveMessage data)
        {
            // We need to get the bytes into unmanaged memory so the don't get moved
            IntPtr dataHandle = Marshal.AllocHGlobal(data.Count);
            Marshal.Copy(data.ToArray(), 0, dataHandle, data.Count);
            lpData = dataHandle;
            dwBufferLength = data.Count;
            dwBytesRecorded = data.Count;

            dwUser = IntPtr.Zero;
            dwFlags = 0;
            lpNext = IntPtr.Zero;
            reserved = IntPtr.Zero;
            dwOffset = 0;
            dwReserved = IntPtr.Zero;
        }

        public void Free()
        {
            Marshal.FreeHGlobal(lpData);
        }
    }

    #endregion Interop
}

Jumpin' Jeff7-Sep-12 1:36

7-Sep-12 1:36

Thank you very much Dave. I shall give these a try tonight! I'll try to parse it to my brain until then.

I very much appriciate your assistance!

Jeff

Jumpin' Jeff7-Sep-12 12:42

7-Sep-12 12:42

Dave,
Thanks again! The sysex examples work great with my sysex code. The buttons flash in responce as desired. Now to send and recieve MidiShortMsgs, and I should be good to go.

Jeff

Jumpin' Jeff7-Sep-12 15:04

7-Sep-12 15:04

Managed to send "short" messages to the controller now, so all I have left is to determine how to callback messages from the controller. Your assistance is greatly appriciated.

Jeff

DaveyM697-Sep-12 22:07

7-Sep-12 22:07

With MIDI In, the procedure is similar. The problem is you have to prepare a MIDIHDR buffer of x size (x is up to you), add it using midiInAddBuffer and that will be returned to you through a MIM_LONGDATA message in a MidiInProc callback - dwParam1 (you will need to cast the IntPtr to int) contains the MIDIHDR (dwParam2 contains the timestamp which you probably don't need). To get a callback, you will need to set CALLBACK_FUNCTION in the dwFlags when using midiInOpen and also call midiInStart.

Checking the dwBytesRecorded (you will need to add a property to expose it) will tell you how much data there actually is in the buffer. The real data can be copied out of the buffer using Marshal.Copy. Don't forget to unprepare the buffer, free the GCHandle and the data pointer! If it is full and the last byte isn't EOX, you will need to quickly add another buffer to get the rest of the sysex data (you can add more than one buffer)!

Once you have all the data and freed everything you can stop and close the input when you're done - one issue though. You may have prepared and added a buffer(s) but received no sysex into it so it's just sitting there. To deal with these you will need to call midiInReset, get the buffers via the callback, unprepare them (and free the GCHandle and data pointer) before calling midiInClose. There is a midiInStop function, this doesn't return unused buffers. I personally call midiInReset, get the buffers in the callback (freeing and unpreparing them) and then call midiInStop to ensure compatibility with all device drivers just in case.

If you get stuck I will happily knock you up some smple code. Based on what I've already given you and this[^] you should be OK though.

Short messages are a doddle. Open, Start, receive MIM_DATA in the callback and extract the bytes from dwParam1, and once you're done Stop (or Reset then Stop) and Close.

Edit: Just checked, calling midiInClose on a MIDI In that still has buffers will not close the device. Instead the function result will be MIDIERR_STILLPLAYING.

modified 8-Sep-12 4:29am.

Jumpin' Jeff8-Sep-12 15:18

8-Sep-12 15:18

Thanks Dave!
I'm not sure I'm that smart, but with a bit more research on the web, I may figure it out. TBO, I need to re-learn C# programming every time I have a project like this to work on. When complete, I'll probably not touch programming in C# until I get another project I want to tackle maby 6-12 months from now. I tend to do most of my programming in AutoHotkey, unless I want something a bit beefier. It's definatly easier to step through studio code than ahk code, as you can't set breakpoins and step into AHK code.

DaveyM699-Sep-12 0:03

9-Sep-12 0:03

I'll see if I can knock up some code for you. May take a few days due to other commitments and it's not the easiest part of the MIDI API to deal with! If you get it sorted, let me know Smile | :)

Jumpin' Jeff10-Sep-12 1:49

10-Sep-12 1:49

That would be more than fine! Thanks again Dave!

DaveyM6915-Sep-12 7:44

15-Sep-12 7:44

Haven't forgotten this Jeff! I figured that this was worth making into a full blown article so I'm putting in more effort than I would otherwise - fun stuff though Smile | :)

I'll keep you updated - hopefully it'll finish up with a library that will make it a doddle to use all the low level MIDI API and Stream API directly from C# with no effort. It shouldn't take long now, it's nearly finished. Thumbs Up | :thumbsup:

Jumpin' Jeff15-Sep-12 8:58