wxPaintDC dc(m_impl->m_container);
dc.SetBackground(wxBrush(m_impl->m_container->GetBackgroundColour(), wxSOLID));
dc.Clear();
wxPaintDC dc(m_impl->m_container);
dc.SetBackground(wxBrush(m_impl->m_container->GetBackgroundColour(), wxSOLID));
dc.Clear();