[Pythoncard-users] async sockets in python card?

[Arthur E. <ar...@ia...>]

Hi,

I'm trying to have multiple sockets updating progressbars and textual 
status fields in a pythoncard window. I tried different approaches, but 
am having very weird problems (yes, I'm rather new to python and card).

The most straight forward approach is to use asyncore as outlined here: 
http://effbot.org/zone/effnews-1.htm

I pass a reference to the async class, so it can find the widgets to 
update. This works, but after a number of subsequent downloads, python 
bails out with ugly errors like Bus error, segmentation fault.. also 
rather strange visual anomalies occur; progressbars painted all over 
the window, etc. nice, but not for this application.

To me it looks like some memory corruption occurs, but how does this 
happen? Circular references? Can I avoid these?

Has anyone done something similar? I tried threads, but had exactly the 
same problems, believing me that it has to do with how I try to access 
the widgets from an instance of a class. When I use the asyncore 
supposedly non blocking sockets, pythoncards GUI still freezes up. 
Event loop problems?

Hope my description rings a bell somewhere.

Arthur