On 02.01.2013 13:14, Albrecht Schlosser wrote:
> So the approach to subclass Fl_Scroll should work as suggested.
> It could maybe need just a little code in handle(), something
> like this might suffice:
>
> MyScroll::handle(int event) {
>
> Fl_Widget *fw = Fl::focus(); // save focus widget
> int ret = Fl_Scroll::handle(event);
> if (ret && fw != Fl::focus) { // event used and focus changed
should read: if (ret && fw != Fl::focus()) { ...
> // check focus widget and scroll ...
> // your design decision here how to manage scrolling
> // returns wx and wx to scroll to
should read: // returns wx and wy to scroll to
> scroll_to(wx,wy);
>
> }
> return ret; // return Fl_Scroll/Fl_Group's return value
> }
And note that this is untested code.
Albrecht
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