Load a Unicode file into a TMemo

Problem/Question/Abstract:

Load a Unicode file into a TMemo

Answer:

procedure LoadUnicodeFile(const filename: string; strings: TStrings);

  procedure SwapWideChars(p: PWideChar);
  begin
    while p^ <> #0000 do
    begin
      p^ := WideChar(Swap(Word(p^)));
      Inc(p);
    end;
  end;

var
  ms: TMemoryStream;
  wc: WideChar;
  pWc: PWideChar;
begin
  ms := TMemoryStream.Create;
  try
    ms.LoadFromFile(filename);
    ms.Seek(0, soFromend);
    wc := #0000;
    ms.Write(wc, sizeof(wc));
    pWC := ms.Memory;
    if pWc^ = #$FEFF then {normal byte order mark}
      Inc(pWc)
    else if pWc^ = #$FFFE then
    begin {byte order is big-endian}
      SwapWideChars(pWc);
      Inc(pWc);
    end
    else
      ; {no byte order mark}
    strings.Text := WideChartoString(pWc);
  finally
    ms.free;
  end;
end;

Used like this:

LoadUnicodeFile(filename, memo1.lines);