在DELPHI中显示GIF动画

想没想过在DELPHI中显示GIF动画？Delphi的用户是非常幸运的，因为有免费控件可以使用。最著名的控件是Anders Melander编写的TGifImage，并提供完整的源程序。它原来的主页是www.melander.dk/delphi/gifimage/，不过有很长时间没有更新了。如果要在新版本的Delphi中使用，可以从http://finn.mobilixnet.dk/delphi/下载Finn Tolderlund改写的Delphi 5/6/7版本的TGifImage。 现在看看怎么在DELPHI中使用GIFImage.pas文件，显示GIF动画首先，新建一个工程，在Project-OPTIONS菜单中的Directories/Conditionals页中的search中添加一个路径，这个路径指向GIFImage.pas所在文件夹然后在FORM1的PUBLIC区添加一个变量GIF，定义为TGIFImage类型在form1的onCreate中添加代码：GIF := TGIFImage.Create; 在form1上添加一个按钮button1，添加一个image控件在button1的click事件中添加代码： Gif.LoadFromFile('d:/abc.gif'); GIF.Paint(Image1.Canvas,Image1.ClientRect,[goAsync,goLoop,goAnimate]);unit Unit1;interfaceuses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs,GIFImage, ExtCtrls;type TForm1 = class(TForm) Image1: TImage; Timer1: TTimer; Panel1: TPanel; Image2: TImage; procedure FormCreate(Sender: TObject); procedure Timer1Timer(Sender: TObject); private { Private declarations } public i:integer; { Public declarations } end;var Form1: TForm1;implementation{$R *.dfm}procedure TForm1.FormCreate(Sender: TObject);var gif:TGIFImage; gif1:TGIFImage;begin //include(GIFImageDefaultDrawOptions, goDirectDraw); gif:=TGIFImage.Create; gif1:=TGIFImage.Create; gif.LoadFromFile('test.gif'); gif1.LoadFromFile('test.gif'); try GIF.Paint(Image1.Canvas,Image1.ClientRect,[goTransparent,goDither,goAsync,goLoop,goAnimate,goDirectDraw]); GIF1.Paint(Image2.Canvas,Image2.ClientRect,[goTransparent,goAsync,goLoop,goAnimate]); //Image1.Picture.Assign(gif); //include(GIFImageDefaultDrawOptions, goDirectDraw); //Image2.Picture.Assign(gif1); finally //GIF.Free; //gif1.Free; end;end;procedure TForm1.Timer1Timer(Sender: TObject);begin//gif.PaintStart;//image1.Picture.Assign(gif.Bitmap); //Image1.Repaint; // if (i<(gif.Images.Count-1)) then Inc(i) else i:=0;end;end.