void show_msgbox( const wxString& w, int buttons )
{
  int id = wxMessageBox( w, wxMessageBoxCaptionStr, buttons );
  switch( id )
  {
  case wxOK:      wxMessageBox( w + wxT(" -> wxOK") );     break;
  case wxCANCEL:  wxMessageBox( w + wxT(" -> wxCANCEL") ); break;
  case wxYES:     wxMessageBox( w + wxT(" -> wxYES") );    break;
  case wxNO:      wxMessageBox( w + wxT(" -> wxNO") );     break;
  default:
    wxMessageBox( wxString::Format(wxT("%ld"), id ) );
    break;
  }
}

#define wxBOX(a) show_msgbox(wxT(#a), a)
  wxBOX(wxOK);
  wxBOX(wxYES_NO);
  wxBOX(wxYES_NO|wxCANCEL);
  wxBOX(wxOK|wxCANCEL);