type
TMyObject = class
rX1, rX2, rX3, rX4: Integer;
end;procedure TForm1.Button2Click(Sender: TObject);
var
vMyObject: TMyObject;
begin
vMyObject := TMyObject(ListBox1.Items.Objects[0]);
if Assigned(vMyObject) then
ShowMessage(Format('X3: %d, X4: %d', [vMyObject.rX3, vMyObject.rX4]));
end;procedure TForm1.FormCreate(Sender: TObject);
var
vMyObject: TMyObject;
begin
vMyObject := TMyObject.Create;
vMyObject.rX1 := 1;
vMyObject.rX2 := 2;
vMyObject.rX3 := 3;
vMyObject.rX4 := 4;
ListBox1.Clear;
ListBox1.Items.AddObject('One', vMyObject);
end;procedure TForm1.FormDestroy(Sender: TObject);
var
vMyObject: TMyObject;
I: Integer;
begin
for I := 0 to ListBox1.Items.Count - 1 do begin
vMyObject := TMyObject(ListBox1.Items.Objects[I]);
if Assigned(vMyObject) then
vMyObject.Free;
end;
end;end.
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