// different wxDC classes (wxPaintDC, wxWindowDC, etc), so that
// we cannot derive wxMemoryDCBase from wxDC and then use it as the
// only base class for native impl of wxMemoryDC...
// different wxDC classes (wxPaintDC, wxWindowDC, etc), so that
// we cannot derive wxMemoryDCBase from wxDC and then use it as the
// only base class for native impl of wxMemoryDC...