猫猫发布的,把UrlDownloadToFile及其进度提示功能都封装进了一个线程类中,源码页面地址:
http://blog.csdn.net/scansoft/archive/2008/11/01/3201156.aspx研究几天,始终没明白如何去调用它,如果是一个简单UrlDownloadToFile使用,没问题,但他这个确实挺牛的,想学习学习,还请各路大虾给讲解下。例如在Button1Click中,如何调用他这个呢?
http://blog.csdn.net/scansoft/archive/2008/11/01/3201156.aspx研究几天,始终没明白如何去调用它,如果是一个简单UrlDownloadToFile使用,没问题,但他这个确实挺牛的,想学习学习,还请各路大虾给讲解下。例如在Button1Click中,如何调用他这个呢?
TDownLoadCompleteEvent
TDownLoadFailEvent
//先定义3个委托(事件变量)
Type
TDownLoadProcessEvent = procedure(Sender:TFileDownLoadThread;Progress, ProgressMax:Cardinal) of object;
TDownLoadCompleteEvent = procedure(Sender:TFileDownLoadThread) of object ;
TDownLoadFailEvent = procedure(Sender:TFileDownLoadThread;Reason:LongInt) of object ;
TForm1=class(TForm)
private
procedure Progressproc(Sender:TFileDownLoadThread;Progress, ProgressMax:Cardinal);
procedure Completeproc(Sender:TFileDownLoadThread;Progress, ProgressMax:Cardinal)
procedure Failproc(Sender:TFileDownLoadThread;Progress, ProgressMax:Cardinal)
end;
procedure TForm1.Progressproc(Sender:TFileDownLoadThread;Progress, ProgressMax:Cardinal)
begin
//委托指定的用户自定义方法
end;procedure TForm1.Completeproc(Sender:TFileDownLoadThread;Progress, ProgressMax:Cardinal)
begin
//委托指定的用户自定义方法end;procedure TForm1.Failproc(Sender:TFileDownLoadThread;Progress, ProgressMax:Cardinal)
begin
//委托指定的用户自定义方法end;procedure TForm1.buttonn1Click;
var
MyTest:TFileDownLoadThread;
begin
MyTest:=TFileDownLoadThread.Create('www.XXXX.com/download/aaa.rar','c:\aaa.rar',Progressproc,Completeproc,Failproc,True);
MyTest.Resume;
end;