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Windows下有一个函数AnimateWindow,在Delphi自带的Win32 API
Help中是找不到的.你可以在Delphi的编辑器中输入windows.等待代码向导出来,继续输入AnimateWindow就能看到确实是存在的Win32
API,它的功能是在显示或者关闭窗体的时候产生动画,如从左向右开屏,从中心向周围开屏等.
语法:function AnimateWindow(hWnd:
HWND; dwTime: DWORD; dwFlags: DWORD): BOOL; stdcall;
参数:hWnd :
想要显示动画窗体的句柄
dwTime : 动画时间数,单位毫秒
dwFlags : 显示方式,取值如下定义
1.AW_HOR_POSITIVE = $00000001; // 从左向右开屏
2.AW_HOR_NEGATIVE = $00000002;
// 从右向左开屏
3.AW_VER_POSITIVE = $00000004; // 从上向下开屏
4.AW_VER_NEGATIVE = $00000008; // 从下向上开屏
5,AW_CENTER =
$00000010; // 从中心向四周扩展,在关闭动画中则为从四周向中心收缩
6.AW_HIDE =
$00010000; // 关闭时候与前面的定义组合使用,如AW_HIDE or AW_CENTER
7.AW_ACTIVATE = $00020000; // 与1-5组合,开屏使用
8.AW_SLIDE =
$00040000; // 与1-5 + 6/7 组合,产生滑行效果
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.
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