UrlDownloadToFile这个函数怎么用

uses UrlMon;

begin

try

Result := UrlDownloadToFile(nil, PChar(source), PChar(Dest), 0, nil) = 0;

except

Result := False;

end;

end;

begin

try

Result := UrlDownloadToFile(nil, PChar(SourceFile), PChar(DestFile), 0, nil) = 0;

except

Result := False;

end;

end;

const

// URL Location

SourceFile :=

// Where to save the file

DestFile :=

begin

if DownloadFile(SourceFile, DestFile) then

begin

ShowMessage('Download succesful!');

// Show downloaded image in your browser

ShellExecute(Application.Handle,PChar('open'),PChar(DestFile),PChar(''),nil,SW_NORMAL)

end

else

ShowMessage('Error while downloading ' + SourceFile)

end;
加入如下代码：
NMHTTP1.InputFileMode := ture;

NMHTTP1.Body := '本地档案名';

NMHTTP1.Header := 'Head.txt';

NMHTTP1.OutputFileMode := FALSE;

NMHTTP1.ReportLevel := Status_Basic;

NMHTTP1.Proxy := '代理伺服器的IP位址';

NMHTTP1.ProxyPort := '代理伺服器的埠号';

With NMHTTP1.HeaderInfo do
Begin

Cookie := '';

LocalMailAddress := '';

LocalProgram := '';

Referer := '';

UserID := '用户名称';

Password := '用户口令';

End;
试试吧，Delphi的目录中有TNMHTTP控制项的例子。NT4+,Win95+,IE3+,你可以用URL Moniker的功能。
uses URLMon; ...
OleCheck(URLDownloadToFile(nil,'URL','Filename',0,nil));

beginio

DownLoadFile:=TFileStream.Create('c:\aa.rar',fmCreate);

DownLoadFile.Free;

end;
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