Hi I have a delphi object to store some music information (note, start time, duratrion...) problem is I always get memory addressing error when I run the code,can someone please tell me where I'm going wrong!

I declare it in a seperate unit, with all my other declerations as follows:

type
SongClass = class
public
//Properties of SongClass

title : String; // Song title for user reference
tempo : integer; //tempo of the song
top : integer;
track : array[1..max_notes] of rNote; //musical data that is the song.

//Methods of SongClass
procedure addNote(inNote : rNote);
procedure sortSong;
constructor create;


end;

When it crashes it ends up with an acces violation.

It wont let me assign a value to any of the properties. I dont want it complicated, I know its kinda simple but it has to be!

I declare the variable just after the decleration of the class, its literally the next line of code:


var
song : songClass;


And when in the other forms I can see song as a variable with all the methods and properties I have made.


I have filled out the methods in rough but none of them do anything and it crashes before they can run anyway.

I do this to set up the object, even tho the constructor is empty:

procedure TForm1.FormCreate(Sender: TObject);
begin
song := song.create;
end;


If i put anything in the constructor, like top :=0; then it crashes there with the access violation!


Have i missed anything really simple out???


Thanks for any help anyone can give me! Its driving me mad!


JOsh :lol: