private static extern Result midiInOpen(ref MidiDeviceHandle deviceHandle, int deviceID, MidiInputDelegate callback, IntPtr callbackInstance, MidiOpenFlags flags);
/// <summary>
/// Opens the specified MIDI input device for receiving MIDI data.
/// </summary>
/// <param name="deviceHandle">A <see cref="MidiDeviceHandle"/> to store the obtained device handle.</param>
/// <param name="deviceID">An <see cref="int"/> representing the MIDI input device's ID.</param>
/// <param name="callback">A <see cref="MidiInputDelegate"/> specifying the callback function to process MIDI messages.</param>
/// <param name="callbackInstance">An <see cref="IntPtr"/> specifying user instance data passed to the callback function.</param>
/// <returns>A <see cref="Result"/> value containing the result of the API call.</returns>
internal static Result OpenMidiInputDevice(ref MidiDeviceHandle deviceHandle, int deviceID, MidiInputDelegate callback, IntPtr callbackInstance)
{
return(midiInOpen(ref deviceHandle, deviceID, callback, callbackInstance, callback == null ? MidiOpenFlags.CALLBACK_NULL : MidiOpenFlags.CALLBACK_FUNCTION | MidiOpenFlags.CALLBACK_IO_STATUS));
}
