Windows下有一個函數(shù)AnimateWindow,在Delphi自帶的Win32 API Help中是找不到的.你可以在Delphi的編輯器中輸入windows.等待代碼向?qū)С鰜?繼續(xù)輸入AnimateWindow就能看到確實是存在的Win32 API,它的功能是在顯示或者關(guān)閉窗體的時候產(chǎn)生動畫,如從左向右開屏,從中心向周圍開屏等.
語法:function AnimateWindow(hWnd: HWND; dwTime: DWORD; dwFlags: DWORD): BOOL; stdcall;
參數(shù):hWnd : 想要顯示動畫窗體的句柄
     dwTime : 動畫時間數(shù),單位毫秒
     dwFlags : 顯示方式,取值如下定義
     1.AW_HOR_POSITIVE = $00000001; // 從左向右開屏
     2.AW_HOR_NEGATIVE = $00000002; // 從右向左開屏
     3.AW_VER_POSITIVE = $00000004; // 從上向下開屏
     4.AW_VER_NEGATIVE = $00000008; // 從下向上開屏
     5,AW_CENTER = $00000010;       // 從中心向四周擴(kuò)展,在關(guān)閉動畫中則為從四周向中心收縮
     6.AW_HIDE = $00010000;         // 關(guān)閉時候與前面的定義組合使用,如AW_HIDE or AW_CENTER
     7.AW_ACTIVATE = $00020000;     // 與1-5組合,開屏使用
     8.AW_SLIDE = $00040000;        // 與1-5 + 6/7 組合,產(chǎn)生滑行效果
     9.AW_BLEND = $00080000;        // Win2000下使用,淡入淡出效果
例子:
unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
    procedure FormCreate(Sender: TObject);
  private
  { Private declarations }
  public
  { Public declarations }
  end;

var Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
  AnimateWindow(handle,200,AW_HIDE+AW_CENTER);
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  AnimateWindow(handle,200,AW_CENTER);
end;

end.