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procedure TForm1.Button1Click(Sender: TObject);
begin
  if Button1.Focused then Form1.Caption := Button1.Caption;
  if Button2.Focused then Form1.Caption := Button2.Caption;
  if Button3.Focused then Form1.Caption := Button3.Caption;
end;                    

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Form1.Caption:=TButton(Sender).Caption;                    

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procedure button1.onclick;
begin
 form2.show;
 Form2.caption:=button1.caption;
end;

procedure button2.onclick;
begin
 form2.show;
 Form2.caption:=button2.caption;
end;                    

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for i:=1 to 50 do Tage[i]:=TButton(FindComponent('Button'+IntToStr(i)));                    

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procedure tage[].OnClick;                    

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procedure TForm1.Button1Click(Sender: TObject); 
begin 
  Form2.Show;
  Form2.Caption:=TButton(Sender).Caption;
end;                    

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procedure TForm1.alles_klick(Sender: TObject); 
begin 
  Form2.Show; 
  Form2.Caption:=TButton(Sender).Caption; 
end;                    

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for i:=1 to 50 do
begin
  Tage[i]:=TButton(FindComponent('Button'+IntToStr(i)));
  TButton(FindComponent('Button'+IntToStr(i))).OnClick:=alles_klick;
end;                    

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case TButton(Sender).Tag of
  1: ....;
  2: ....;
end;                    

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type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    procedure FormCreate(Sender: TObject);
    procedure alles_klick(Sender:Tobject);

  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.alles_klick(Sender:Tobject);
begin
  form1.Caption:=TButton(sender).caption;
end;

procedure TForm1.FormCreate(Sender: TObject);
VAR i : INTEGER;
begin
  for i:=1 TO 3 DO
  TButton(FindComponent('Button'+IntToStr(i))).OnClick:=alles_klick;
end;                    

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hButton : Array[1..50] of TSpeedButton; // Gobal angelegt

In Form.Create dann:
For i := 1 to 50 do begin
  hButton[i] := TSpeedButton.Create(Self);
  With hButton[i] do begin
    Parent := <zB Form1 oder GroupBox>
    Height := ....
    Width := ....
    OnClick := <ClickProzedur>;
    ..... usw.
  end;
end;