On 26 Feb 2012, at 17:22, Greg Ercolano wrote:
> >> You can call Fl_Window::make_current() to do incremental update of a widget. > > I usually avoid that last item to keep drawing code in draw() > methods only. Yes, it is not reliable, in so far as, if you ever have to "refresh" the entire widget, e.g. due to damage from another source, there is no way of retaining the incrementally drawn buffer, so everything tends to get lost at that point. Which rather defeats the point of incremental drawing... I find that fl_offscreen is the way to go for this sort of incremental update of a widget, in general. That, or retaining a list of vectors and redrawing the entire scene from that "properly"... _______________________________________________ fltk mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk
