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unit Unit3;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs;

type
  TComponentXYZ = class(TComponent)
  private
    { Private declarations }
    FBeforeConnect: TNotifyEvent;

  public
    { Public declarations }
  published
  property
    BeforeConnect: TNotifyEvent
      read FBeforeConnect write FBeforeConnect;

  end;

implementation

procedure Register;
begin
  RegisterComponents('Component', [TComponentXYZ]);
end;

initialization
Register;

end.