imm wrote: > OK - but you need to be aware that relying on the clip region to only > show the bit of your scroll that is visible might not be the most > efficient solution (although it will work.) > > If the full area of your scroll is very large, it is possible that > your program will still expend effort rendering the bit that is never > going to be seen - so you may need to be clever when handling the > drawing of your scroll area so that only the parts that are near the > viewable region get recomputed.
Indeed, I thought about it and it's possible that my app expends unnecessary effort. But I maybe found another solution. I noticed that my pb doesn't occur when I use the Fl_Scroll class. So I could derive my own class not from Fl_Group, but from Fl_Scroll and set type(0) (no scrollbar). I know it look a little bit "non sens" but it would allow me to avoid all this clip managements. I guess the Fl_Scroll class manages this clip properties much better than I would. _______________________________________________ fltk mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk
