delphi的动画效果例子

源代码：

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Image1: TImage;
    Image2: TImage;
    Image3: TImage;
    Image4: TImage;
    Timer1: TTimer;
    procedure Timer1Timer(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation
var Index: integer;
{$R *.dfm}

procedure TForm1.Timer1Timer(Sender: TObject);
begin
  if Index = 0 then
  begin
    Image1.visible:= true;
    Image2.visible:= false;
    Image3.visible:= false;
    Image4.visible:= false;
    Index:= Index + 1;
  end
  else if Index = 1 then
  begin
    Image1.visible:= false;
    Image2.visible:= true;
    Image3.visible:= false;
    Image4.visible:= false;
    Index:= Index + 1;
  end
  else if Index = 2 then
  begin
    Image1.visible:= false;
    Image2.visible:= false;
    Image3.visible:= true;
    Image4.visible:= false;
    Index:= Index + 1;
  end
  else if Index = 3 then
  begin
    Image1.visible:= false;
    Image2.visible:= false;
    Image3.visible:= false;
    Image4.visible:= true;
    Index:= 0;
  end;
end;

end.