Lancer une procedure d'après son nom

...
type
TForm1 = class(TForm)
Button1: TButton;
procedure Button1Click(Sender: TObject);
// Your routines (that you'll run by name) must be here
procedure Hello_World(Sender: TObject);
private
procedure ExecuteRoutine(Instance: TObject; Name: string);
end;

var
Form1: TForm1;

type
TExecute = procedure of object;

implementation

{$R *.DFM}

procedure TForm1.ExecuteRoutine(Instance: TObject; Name: string);
var
Routine: TMethod;
Execute: TExecute;
begin
Routine.Data := Pointer(Instance);
// Returns the address of a published method.
Routine.Code := Instance.MethodAddress(Name);
if Routine.Code = nil then Exit;
Execute := TExecute(Routine);
Execute;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
ExecuteRoutine(Form1, 'Hello_World');
end;

procedure TForm1.Hello_World(Sender: TObject);
begin
ShowMessage('This is a test');
end;
end.