mnuSleepMode = new wxMenuItem( mnuWindow, wxID_ANY, wxString( wxT("Sleep Mode") ) , wxEmptyString, wxITEM_CHECK );
mnuWindow->Append( mnuSleepMode );
mnuSleepMode = new wxMenuItem( mnuWindow, wxID_ANY, wxString( wxT("Sleep Mode") ) , wxEmptyString, wxITEM_CHECK );
mnuWindow->Append( mnuSleepMode );