All, I'd like to know if there are more FLTK users who have the need to track the widget that currently has the focus. If this was a common problem, we could probably add something to FLTK to make this easier. It's not easy with current FLTK methods, as can be seen in the current discussion with the title "scroll to focus in Fl_Scroll" in fltk.general.
<http://www.fltk.org/newsgroups.php?gfltk.general+Q%22scroll+to+focus+in+Fl_Scroll%22> I could imagine something like a callback that could be called whenever the current focus widget (Fl::focus()) changes. This could be something like: Fl::register_focus[_tracking] (my_widget,callback,arg) to register interest in focus changes. In this case, each focus change would call the callback function like this: void callback (Fl_Widget *w, long or void * arg, Fl_Widget *focus) The last argument is just to avoid calling Fl::focus() each time the callback is called, but could also be removed. The first argument would be the widget ("my_widget") the callback was registered for (this could also be NULL, if my_widget was NULL in the call to register_focus[...]. ... or something like that ... Any ideas, comments, wishes ? Albrecht _______________________________________________ fltk mailing list fltk@easysw.com http://lists.easysw.com/mailman/listinfo/fltk
