wxASSERT_MSG( m_date.IsValid() == dt.IsValid() &&
(!dt.IsValid() || dt == m_date),
_T("bug in wxDatePickerCtrl: m_date not in sync") );
wxASSERT_MSG( m_date.IsValid() == dt.IsValid() &&
(!dt.IsValid() || dt == m_date),
_T("bug in wxDatePickerCtrl: m_date not in sync") );