uses TypInfo;
{ .... }
procedure TForm1.Button1Click(Sender: TObject);
var
 x, y, z: Word;
 pl: PPropList;
begin
 y := GetPropList(Self, pl);
 for x := 0 to y - 1 do
 begin
  if Copy(pl[x].Name, 1, 2) <> 'On' then Continue;
  if GetMethodProp(Self, pl[x].Name).Code <> nil then
  Memo1.Lines.Add(Self.Name + ' - ' + pl[x].Name);
 end;
 for z := 0 to Self.ComponentCount - 1 do
 begin
  y := GetPropList(Self.Components[z], pl);
  for x := 0 to y - 1 do
  begin
  if Copy(pl[x].Name, 1, 2) <> 'On' then Continue;
  if GetMethodProp(Self.Components[z], pl[x].Name).Code <> nil then
  Memo1.Lines.Add(Self.Components[z].Name + ' - ' + pl[x].Name);
  end;
 end;
end;