public void MidiOutCallback(MIDI_WIN32_MSDN.HMIDIOUT hMidiOut, MIDI_WIN32_MSDN wMsg, UIntPtr dwInstance, UIntPtr dwParam1, UIntPtr dwParam2)
{
if (wMsg.ToString() == "MOM_OPEN")
{
MIDI_WIN32_MSDN.midiOutPrepareHeader(hMidiOut, IntPtr.Zero, 65536);
}
else if (wMsg.ToString() == "MOM_DONE")
{
// do buffering (void code)
}
else if (wMsg.ToString() == "MOM_CLOSE")
{
MIDI_WIN32_MSDN.midiOutUnprepareHeader(hMidiOut, IntPtr.Zero, 65536);
}
}
public void MIDIOpenOutDevice()
{
hMIDIOUT = new MIDI_WIN32_MSDN.HMIDIOUT();
/// Open the MIDI output device
MMRESULT = MIDI_WIN32_MSDN.midiOutOpen(out hMIDIOUT, UIntPtr.Zero, null, UIntPtr.Zero);
if (MMRESULT == MIDI_WIN32_MSDN.MMRESULT.MMSYSERR_ERROR)
{
Console.WriteLine("MIDI OUT OPEN ERR");
return;
}
/// Before playing a MIDI file, you should use the midiOutGetDevCaps function
/// to determine the capabilities of the MIDI output device that is present in the system.
/// This function takes an address of a MIDIOUTCAPS structure,
/// which it fills with information about the capabilities of the given device.
MIDI_WIN32_MSDN.midiOutGetDevCaps(0, ref MidiOutCap, (uint)Marshal.SizeOf(typeof(MIDI_WIN32_MSDN.MidiOutCaps)));
}