提取网页内容变了乱码？

Question

function GetWebPage(const Url: string):string;
var
  Session,
  HttpFile:hinternet;
  szSizeBuffer:Pointer;
  dwLengthSizeBuffer:DWord;
  dwReserved:DWord;
  dwFileSize:DWord;
  dwBytesRead:DWord;
  Contents:PChar;
begin
  Session:=InternetOpen('',0,niL,niL,0);
  HttpFile:=InternetOpenUrl(Session,PChar(url),niL,0,0,0);//url要寫全  http://www.123.com
  dwLengthSizeBuffer:=1024;
  HttpQueryInfo(HttpFile,5,szSizeBuffer,dwLengthSizeBuffer,dwReserved);
  GetMem(Contents,dwFileSize);
  InternetReadFile(HttpFile,Contents,dwFileSize,dwBytesRead);
  InternetCloseHandle(HttpFile);
  InternetCloseHandle(Session);
  Result:=StrPas(Contents);
  FreeMem(Contents);
  end;
procedure TForm1.Button1Click(Sender: TObject);
var s:string;
begin
  s:=GetWebPage('http://www.bjfcdt.gov.cn/datacenter/gettvplusinfo.aspx');
  ShowMessage(s);
end;
提取出来的是乱码，我运行的是delphi2010版
是哪里出问题了？

Answer 1

编码问题  试试下面这个
function Utf8Encode(const WS: WideString): UTF8String;
var
  L: Integer;
  Temp: UTF8String;
begin
  Result := '';
  if WS = '' then Exit;
  SetLength(Temp, Length(WS) * 3); // SetLength includes space for null terminator  L := UnicodeToUtf8(PChar(Temp), Length(Temp)+1, PWideChar(WS), Length(WS));
  if L > 0 then
    SetLength(Temp, L-1)
  else
    Temp := '';
  Result := Temp;
end;

Answer 2

运行不了
Checking project dependencies...
Compiling Project1.dproj (Debug configuration)
[DCC Warning] Unit1.pas(43): W1036 Variable 'dwFileSize' might not have been initialized
[DCC Warning] Unit1.pas(42): W1036 Variable 'szSizeBuffer' might not have been initialized
[DCC Warning] Unit1.pas(61): W1044 Suspicious typecast of UTF8String to PWideChar
[DCC Error] Unit1.pas(61): E2250 There is no overloaded version of 'UnicodeToUtf8' that can be called with these arguments
[DCC Warning] Unit1.pas(61): W1000 Symbol 'UnicodeToUtf8' is deprecated
[DCC Fatal Error] Project1.dpr(5): F2063 Could not compile used unit 'Unit1.pas'
Failed
Elapsed time: 00:00:00.461行  ：  L := UnicodeToUtf8(PChar(Temp), Length(Temp)+1, PWideChar(WS), Length(WS));