-#if defined(__WIN95__)
- return (WinHelp(GetSuitableHWND(), (const wxChar*) str, HELP_FINDER, 0L) != 0);
-#else
- return (WinHelp(GetSuitableHWND(), (const wxChar*) str, HELP_CONTENTS, 0L) != 0);
-#endif
+ return (WinHelp(GetSuitableHWND(this), str.wx_str(), HELP_FINDER, 0L) != 0);