[Dillo-dev] [patch] avoid complete redraws for child widget updates

Hello, here comes a patch that avoids complete redrawing if only a child widget (button or form input) requests redrawing. I don't really like the fact, that fltk widgets are sometimes drawn via Group::draw() and sometimes via theLayout->expose(), but this is already the case without my patch, so I just leave it as it is for now. In the long run, I would propose to add a mechanism similar to fltk DAMAGE_CHILD to dw. To test go to google and type in some text. Cheers, Johannes