u_ren.pas

c/s系统。 delphi 6+access 运行前先配置数据环境：把db文件夹复制到c：下 要编译请安装第三方控件fastreport2.47 这是我的小小的毕业设计

unit u_ren;

interface

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

type
  Tren = class(TForm)
    Label1: TLabel;
    reedit: TEdit;
    BitBtn1: TBitBtn;
    BitBtn2: TBitBtn;
    procedure reeditChange(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  ren: Tren;

implementation

{$R *.dfm}

procedure Tren.reeditChange(Sender: TObject);
begin
     BitBtn1.Enabled := reedit.Text <> '';
end;

end.