function GetCaptionAtPoint(CrPos: TPoint): string;
 var
  textlength: Integer;
  Text: PChar;
  Handle: HWND;
 begin
  Result := 'Empty';
  Handle := WindowFromPoint(CrPos);
  if Handle = 0 then Exit;
  textlength := SendMessage(Handle, WM_GETTEXTLENGTH, 0, 0);
  if textlength <> 0 then
  begin
  getmem(Text, textlength + 1);
  SendMessage(Handle, WM_GETTEXT, textlength + 1, Integer(Text));
  Result := Text;
  freemem(Text);
  end;
 end;