無風的日子

unit test;

interface

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

type
  TForm1 = class(TForm)
    Button2: TButton;
    Label1: TLabel;
    Edit1: TEdit;
    Button1: TButton;
    SpinEdit1: TSpinEdit;
    SpinEdit2: TSpinEdit;
    Button3: TButton;
    Button4: TButton;
    procedure Button2Click(Sender: TObject);
    procedure Label1MouseEnter(Sender: TObject);
    procedure Label1MouseLeave(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button2Click(Sender: TObject);
begin
 ShowMessage('Hello..World')
end;

procedure TForm1.Label1MouseEnter(Sender: TObject);
begin
label1.Font.Color := clRed
end;

procedure TForm1.Label1MouseLeave(Sender: TObject);
begin
label1.font.color := ClBlack
end;

//顥示訊息
procedure TForm1.Button1Click(Sender: TObject);
begin
 ShowMessage(Edit1.text)
end;

//計算累加
procedure TForm1.Button3Click(Sender: TObject);
var i,sum: integer;
begin
sum := 0;
for i:= SpinEdit1.Value to SpinEdit2.value do sum :=sum + i ;
Showmessage (InttoStr(sum));
end;

// 計算偶數
procedure TForm1.Button4Click(Sender: TObject);
var i,sum: integer;
begin
sum := 0;
for i:= SpinEdit1.Value to SpinEdit2.value do if (i mod 2 = 0) then sum :=sum + i ;
Showmessage (InttoStr(sum));
end;

end.