How to get the sort order in Delphi as in Windows Explorer?

Question

Summarization:

1. The terminology that I have been looking for seems to be \"natural sort\".

2. For behaviors in operating systems:

   • For Win

Answer 1

Thanks to Anders - the answer is StrCmpLogicalW; I have not found it's declaration in Delphi 2009 sources, so I declared it myself in the test below:

type
  TMyStringList = class(TStringList)
  protected
    function CompareStrings(const S1, S2: string): Integer; override;
  end;

function StrCmpLogicalW(P1, P2: PWideChar): Integer;  stdcall; external 'Shlwapi.dll';

function TMyStringList.CompareStrings(const S1, S2: string): Integer;
begin
  Result:= StrCmpLogicalW(PChar(S1), PChar(S2));
end;

procedure TForm11.Button2Click(Sender: TObject);
var
  SL: TMyStringList;

begin
  SL:= TMyStringList.Create;
  try
    SL.Add('test_1_test.txt');
    SL.Add('test_11_test.txt');
    SL.Add('test_12_test.txt');
    SL.Add('test_2_test.txt');
    SL.Add('test_21_test.txt');
    SL.Add('test_22_test.txt');
    SL.Sort;
    Memo1.Lines:= SL;
  finally
    SL.Free;
  end;
end;

Answer 2

StrCmpLogicalW is able to handle numbers, the other alternative is CompareString