Re: X11 and Threads...

Hi Daniel,

On Thu, 2006-12-21 at 17:48 +0100, Fons Rademakers wrote:
> Hi Daniel,
>
> updating canvases from different threads is not supported. What should
> be done is to concentrate all canvas drawing in one thread while the object
> being drawn can be modified in different threads (like histogram or graph
> updating). See for example the tutorial: tutorials/thread/threadsh1.C.

Alternatively, you can do your own lock-ing, using a mutex. Encapsulate the canvas in a class, and attach a lock. Then make sure you always sync using that lock.

If all you need is to occationally update a canvas while the program is collection or processing data, you'd be better of with a periodic TTimer.

Yours,

-- 
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