Как перетаскивать файлы?

Code:

...

public

   procedure WMDropFiles(var Msg: TWMDropFiles);

     message WM_DROPFILES;

end;

var

Form1: TForm1;

implementation

{$R *.DFM}

uses ShellAPI, stdctrls;

procedure TForm1.WMDropFiles(var Msg: TWMDropFiles);

var

HF: THandle;

s: array [0..1023] of char;

i, FileCount: integer;

p: TPoint;

ts: TTabSheet;

memo: TMemo;

begin

HF := Msg.Drop;

FileCount := DragQueryFile(HF, $FFFFFFFF, nil, 0);

for i := 0 to FileCount - 1 do begin

   DragQueryFile(HF, i, s, sizeof(s));

   ts := TTabSheet.Create(nil);

   DragQueryPoint(HF, p);

   if PtInRect(PageControl1.BoundsRect, p)

     then ts.PageControl := PageControl1

     else ts.PageControl := PageControl2;

   ts.Caption := ExtractFileName(s);

   memo := TMemo.Create(nil);

   memo.Parent := ts;

   memo.Align := alClient;

   memo.Lines.LoadFromFile(s);

end;

DragFinish(HF);

end;

procedure TForm1.FormCreate(Sender: TObject);

begin

PageControl1.Align := alLeft;

PageControl2.Align := alClient;

DragAcceptFiles(Form1.Handle, true);

end;

procedure TForm1.FormDestroy(Sender: TObject);

begin

DragAcceptFiles(Form1.Handle, false);

end;