gtkmm: New API in gtkmm 2.30
- Member Gdk::Pixbuf::create (const Cairo::RefPtr< Cairo::Surface >& src, int src_x, int src_y, int width, int height)
- Member Gdk::Pixbuf::Pixbuf (const Cairo::RefPtr< Cairo::Surface >& src, int src_x, int src_y, int width, int height)