[Pyobjc-dev] tableview crash

[Burris T. E. <bu...@gi...>]

Forgive me, my Cocoa is pretty rusty...  I have a single column  
NSTableView using an NSCell subclass.  The cell gets a reference to a  
view (a box of regular controls) in setObjectValue_  Each row has a  
worker thread, started with start_new_thread, that posts a method and  
arguments onto a queue.  I have an NSTimer going off in the main thread  
that pulls the methods off the queue, which update the views that are  
displayed in the cell.

When there is more than one row in the TV I get a strange crash shortly  
after selecting rows in quick succession or in dragging on a row (the  
TV is set to single selection and no rearranging of rows).  Usually in  
the cell's drawInteriorWithFrame_inView_ the attribute containing the  
content view will disappear mid-method.  Or an extra argument will show  
up in the NSTimer fired event loop.  Now I'm getting "Fatal Python  
error: GC object already tracked"

I think I'm running latest CVS and built in 2.3 on 10.3.2

Any help would be appreciated!


interesting bits from cell:

     def setObjectValue_(self, controller):
         self.controller = controller

     def drawInteriorWithFrame_inView_(self, frame, view):
         if self.controller.cview.superview() != view:
             view.addSubview_(self.controller.cview)
         if self.controller.resized:
             self.controller.resized = 0
             self.controller.cview.setFrame_(frame)
         self.controller.cview.lockFocus()
         self.controller.cview.drawRect_(frame)
         self.controller.cview.unlockFocus()

interesting bits from the controller:

     def handleEvents_(self, timer):
         while self.events:
             self.event_lock.acquire()
             f, args, kwargs = self.events.pop()
             self.event_lock.release()
             try:
                 f(*args,**kwargs)
             except:
                 print_exc()
         if not self.flag.isSet():
                  
NSTimer.scheduledTimerWithTimeInterval_target_selector_userInfo_repeats_ 
(0.2, self, self.handleEvents_, self, 0)


burris