摘要:
unit Unit1;interfaceuses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, ExtCtrls;type TForm1 = class(TForm) pnl1: TPanel; btn1: TButton; btn2: TButton; procedure btn1Click(Sender: TObject); procedure btn2Click(Sender: TObject); privat... 阅读全文