[[coso]]

Bueno, estan lo que seria array de procedure of object...

Código Delphi [-]
unit Unit1;
interface
uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;
type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Button5: TButton;
    procedure Funcion_1;
    procedure Funcion_2;
    procedure Funcion_3;
    procedure Funcion_4;
    procedure Funcion_5;
    procedure FormActivate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
    funciones : array [1..5] of procedure of object;
  end;
var
  Form1: TForm1;
implementation
{$R *.DFM}
procedure TForm1.FormActivate(Sender: TObject);
begin
        Funciones[1] := Funcion_1;
        Funciones[2] := Funcion_2;
        Funciones[3] := Funcion_3;
        Funciones[4] := Funcion_4;
        Funciones[5] := Funcion_5;
end;
procedure TForm1.Funcion_1;
begin
        ShowMessage('funcion 1');
end;
procedure TForm1.Funcion_2;
begin
        ShowMessage('funcion 2');
end;
procedure TForm1.Funcion_3;
begin
        ShowMessage('funcion 3');
end;
procedure TForm1.Funcion_4;
begin
        ShowMessage('funcion 4');
end;
procedure TForm1.Funcion_5;
var
        i : integer;
begin
        ShowMessage('Funcion 5 : todas');
        for i := 1 to 4 do
        begin
                Funciones[i];
        end;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
        s : string;
begin
        s := (sender as TControl).Name;
        Funciones[strtoint(stringreplace(s,'Button','',[rfReplaceAll,rfIgnoreCase]))];
end;
end.

tiene 5 buttons los cinco asignados el onbuttonclick a Button1Click; (los nombres tienen q ser Button1,Button2, etc...)

en tu caso seria usar

Código Delphi [-]
procedure TForm1.Button1Click(Sender: TObject);
begin
     Funciones[ComboBox1.ItemIndex];
end;

saludos