[delphi-br] Undeclared identifier TWinControl

[developer.systems]

Boa noite,

ao compilar no Delphi 7, dá a mensagem "[Error] p_funcoes.pas(13): Undeclared 
identifier: TWinControl", como resolver ?

no uses está:
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Forms,
  Dialogs, Buttons, StdCtrls, DB, ADODB, Mask, ComCtrls, DBCtrls,ExtCtrls, 
StrUtils,Controls;

A linha do erro:
procedure CallFocus( comp: TWinControl ) ;

obrigado.

Eric