> I already have a thread going that is handling the polling of
> the shared memory and writing it to a local property pixbuf.
> The problem is that even though the thread calls for the
> redraw method of the Fl_Box on every cycle of the thread. It
> only redraws if the mouse is being moved which is exceedingly odd.
Would help a bit if you told us which version of fltkm and what host
platform.
Anyway, guess mode on:
I am assuming that you are using fltk-1.1.8. Have you read chapter 10 of
the manual, which covers multi-threading support in fltk-1?
In summary, only the "main" thread can access the GUI layer (for
cross-platform portability reasons), so calling redraw() from a non-GUI
thread is not guaranteed to work.
What you need to do instead is something like this.
- From your main GUI thread, before you show your first window, call
Fl::lock(); *just once* (and do not call unlock in themain thread at
all) this will wake up fltk's threading support.
- From your helper thread, each time you need to modify a widget in the
GUI thread, do this sequence.
Fl::lock();
<widget changes>
Fl::unlock();
Fl::awake();
Do not call redraw(); at all from the helper thread, as it won't do what
you want...
Cheers,
--
Ian
SELEX Sensors and Airborne Systems Limited
Registered Office: Sigma House, Christopher Martin Road, Basildon, Essex SS14
3EL
A company registered in England & Wales. Company no. 02426132
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