Re: [Pythoncard-users] Targeting a component from a subthread?

[Alex T. <al...@tw...>]

Alec Bennett wrote:
> One more question and then I'm reasonably homefree:
>
> Any clue how to set a component from a sub thread?
>
> In other words, say I launch this thread from the class that's running my gui:
>
> class somethread ( threading.Thread ):
>
>    def run ( self ):
>
>       self.components.nowplaying.file = "somefile.jpg"
>
> somethread().start()
>
>
> Currently the "self" doesn't reach the PyCard gui. I confess to still
> being confused by "self", which is probably the problem.
>
> Here's how my gui is launched, if it mattes:
>
> class MyBackground(model.Background):
>    def on_initialize(self, event):
>
>
> I've been trying things like MyBackground.components.nowplaying.file =
> "somefile.jpg", but that's probably moronic.
>
>   
Not necessarily moronic, depending on the context :-)

Did you look at samples/chat.py, which does some simple threading (but 
in a different way).

It does the equivalent of
(sorry, this is untested, I'm in the process of switching computers, and 
can't actually run anything in Python right now :-)

class somethread:
   def __init__ (self, parent):
       self.parent = parent

  def run (self):
        self.parent.components..nowplaying.file = "somefile.jpg"



class MyBackground(model.Background):
    def on_initialize( self, event ):
       -- this 'self' is the background, and it is passed to 
'somethread' as the parameter 'parent'
       thethread = somethread(self)
       thethread.start()




-- 

Alex Tweedly      mailto:al...@tw...      www.tweedly.net