unit2.pas

完成Windows程序中计算器中的所有功能,使用类似Windows计算器的图形界面； （2） 使用可视化方法设计

unit Unit2;

interface

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

type
  TForm2 = class(TForm)
    Image1: TImage;
    SpeedButton1: TSpeedButton;
    procedure SpeedButton1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form2: TForm2;

implementation

{$R *.dfm}

procedure TForm2.SpeedButton1Click(Sender: TObject);
begin
 close;
end;

end.