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wxPython, searching, and threads

Hello! I am writing a search engine with wxPython as the GUI. As the
search thread returns items, it adds them to a Queue which is picked
up by the main GUI thread calling itself recursively with
wx.CallAfter. These are then added to a ListCtrl. This works fine for
small searches, but with larger and longer searchs the GUI is clogged
and won't respond. I suspect (I may be wrong) that there are so many
results being sent to the ListCtrl that the event loop doesn't have
time to respond to events. I've tried buffering the results before
sending them to the GIU, but that doesn't help at all. Please advise.

Jul 18 '07 #1
1 1732
On Jul 18, 11:38 am, Benjamin <musiccomposit. ..@gmail.comwro te:
Hello! I am writing a search engine with wxPython as the GUI. As the
search thread returns items, it adds them to a Queue which is picked
up by the main GUI thread calling itself recursively with
wx.CallAfter. These are then added to a ListCtrl. This works fine for
small searches, but with larger and longer searchs the GUI is clogged
and won't respond. I suspect (I may be wrong) that there are so many
results being sent to the ListCtrl that the event loop doesn't have
time to respond to events. I've tried buffering the results before
sending them to the GIU, but that doesn't help at all. Please advise.
The standard wxPython user's group reply to a question like this is,
check out http://wiki.wxpython.org/LongRunningTasks. I've used a
variation of what's on this page to create a fairly complex installer
than keeps a textctrl updated with its progress. Since the installer
runs for almost an hour, I think this method works great.

Admittedly, you work with threads, which is intimidating to some
degree and if you use WMI, then you'll need to use some special
commands to make it work in a thread.

The wxPython mailing list is here: http://www.wxpython.org/maillist.php

Hope that helps.

Mike

Jul 19 '07 #2

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