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Indy har komponenter til den slags

Kan du komme tættere på end det? :)

Fandt den selv

function GetInetFile(const fileURL, FileName: String): boolean; const BufferSize = 1024;
var
  hSession, hURL: HInternet;
  Buffer: array[1..BufferSize] of Byte;
  BufferLen: DWORD;
  f: File;
  sAppName: string;
begin
Result:=False;
sAppName := ExtractFileName(Application.ExeName);
hSession := InternetOpen(PChar(sAppName),
                INTERNET_OPEN_TYPE_PRECONFIG,
              nil, nil, 0);
try
  hURL := InternetOpenURL(hSession,
            PChar(fileURL),
            nil,0,0,0);
  try
  AssignFile(f, FileName);
  Rewrite(f,1);
  repeat
    InternetReadFile(hURL, @Buffer,
                    SizeOf(Buffer), BufferLen);
    BlockWrite(f, Buffer, BufferLen)
  until BufferLen = 0;
  CloseFile(f);
  Result:=True;
  finally
  InternetCloseHandle(hURL)
  end
finally
  InternetCloseHandle(hSession)
end
end;