I have been having issues getting the draw() methods to do anything, I have seen sample code from Greg E and others and as it says below (from a Nano-X SDK article :
"There are only certain places you can execute drawing code in FLTK. Calling these functions at other places will result in undefined behavior! The most common is inside the virtual method Fl_Widget::draw(). To write code here, you must subclass one of the existing Fl_Widget classes and implement your own version of draw()." What are the other methods mentioned? I have seen the Widget one, For learning purposes why does the fl_line or fl_rectf calls seem to not do anything unless implemented in this widget fashion? Is the window not interpreted as some kind of 'surface' and whichever is the 'current' or 'pointed to' surface the call to fl_line say would be executed there? It seems like it does not know about the active window(s)? I would just like to populate an area with lots of coloured rectangles generated on the fly, updated regularly, drawing filled rectangles seems a lot faster than using fl_box for example, so i chose to try drawing functions, but am not clear how it all goes together in FLTK. _______________________________________________ fltk mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk
