Partial example for a structure holding Midi Data

[operatortwo]

This is just a partial example for how midi-data can be stored in the usual way. Of course there are many possible ways.

Public Class TrackEvent       
       Public Time As UInteger                 '   for all Events        in Sequencer Ticks
       Public Type As EventType               '   for all Events
       Public Status As Byte                      '   for MidiEvents
       Public Data1 As Byte                       '  for MidiEvents and MetaEvents
       Public Data2 As Byte                       '  for MidiEvents
End Class

Then a List object can be used (from System.Collections.Generic)

Public EventList As New List(Of TrackEvent)

List(Of T) has many interesting methods like add, find, insert, sort,..

Midi events are added to the List. Note-Events are always pairs of Note-On and Note-Off, but most time not consecutively (index 5, index 6) but more (index 5, other events, index 11)

The player starts at index 0 of the list.
At every timer interval, the timer proc compares the song-position with the Time of the event.
When Song-Position < Time then the proc is exited
else: the note will be played, index is increased by 1, next check for time,..