摘要： unit Unit1;interfaceuses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, Buttons;type TForm1 = class(TForm) Memo1: TMemo; Label1: TLabel; BitBtn1: TBitBtn; BitBtn2: TBitBtn; procedure BitBtn1Click(Sender: TObject); private { Private declarations } public 阅读全文