leowang wrote: > I create a simple window, in this window, it has a button. I found that when > I hide this button, it will redraw the whole window. why? > > > I think it only need to redraw the button area is enough. > > my fltk version is fltk-2.0 > > could someone give me a reason about this? thanks
I can't tell you a real reason, because I'm not using FLTK 2 and I don't know the code well enough to tell, but: There is the possibility that any widget has a label outside of its box dimensions. Thus when hiding a widget, it is likely that FLTK (1 and/or 2) will draw the whole enclosing (Fl_)Group widget. If you have only a simple window with a button, then this enclosing group is the whole window. If you want to reduce flickering, you can either use a smaller enclosing group or use a DoubleWindow (Fl_Double_Window). Please note that something of this is just educated guessing with some FLTK 1 code knowledge in mind ... Albrecht _______________________________________________ fltk mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk
