I am learning v1.3. I inherited a Fl_Widget, and put fl_rectf(0, 0, w(), h()) in the virtual draw() method, but the rectangle was drawn on the top left of the top level window. And moving Fl_Group will not move its children. All these are peculiar(compared with Qt, Gtk+, etc.), and I took a day to figure this out (not a bug but a feature). Will this change in Fltk3?