[wxPython-users] Re:

[Michael S]

If I create a threading.Thread derived class, and run
the wxPython code in the main thread; using a lock,
will I be able to suspend the Thread, even though it
will run the C code, which is essentially a while loop
looping through millions of lines of a text file?

Thanks in advance.
Michael

--- Josiah Carlson <jcarlson at uci.edu> wrote:

> 
> Gabriel Genellina <gagsl-py at yahoo.com.ar> wrote:
> > At Tuesday 24/10/2006 23:25, Michael S wrote:
> > 
> > >I extended part of my program in C, since that
> part
> > >was too involved for Python. Now when I import
> the
> > >module I created and call its functions, I am
> trying
> > >to feedback some information bac to my wxPython
> > >program. The function runs for a while and I
> wanted to
> > >update a progress bar, but when I call the
> function of
> > >my new module, wxPython doesn't respond when
> wx.Timer
> > >is supposed to fire.
> > 
> > Does your extension run on a separate thread? I
> guess not. So the 
> > wxPython code does not have a chance to run.
> > Do it the other way: from your C code, call a
> Python function which 
> > in turn updates the progress bar (and keep it
> simple!)
> 
> Unless the GUI thread has a chance to take passes
> through the wxPython
> mainloop, the progress bar, etc., may not actually
> be updated on some
> platforms.
> 
> Mr. Sherman would likely be better off creating a
> new thread which
> handles processing, which could update a C global
> variable, which the
> GUI thread can poll to update its progress bar, etc.
>  Alternatively, if
> the processing can be broken down into smaller
> pieces, the secondary
> thread can call the pieces and post events back to
> the GUI thread to
> update the progress bar (via explicit wx.PostEvent
> or implicit
> wx.CallAfter).
> 
> 
>  - Josiah
> 
> 
>
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