I started porting inkscape widgets to gtkmm and c++ and have a few questions:

1) There are two directories src/widgets and src/ui/widget. Is the former deprecated? 

2) Should I move classes to src/ui/widget after c++-sification? 

3) What is the proper macro to differentiate between gtk versions? GTK_CHECK_VERSION(3,0,0) or WITH_GTKMM_3_0?

Regards,

  Tomek