Re: Tkinter listener thread?
On Thu, 26 Jan 2006 17:32:32 +, Steve Holden [EMAIL PROTECTED] wrote: gregarican wrote: I have a Python UDP listener socket that waits for incoming data. The socket runs as an endless loop. I would like to pop the incoming data into an existing Tkinter app that I have created. What's the easiest/most efficient way of handling this? Would I create a separate thread that has the listener set a certain Tkinter variable if there is incoming data? Any suggestions would be tremendously appreciated :-) http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/82965 There's in fact no need to check regularly if there's something in the Queue: the secondary thread can post a tk custom event to trigger the treatment automatically from within the main GUI loop. See here: http://minilien.fr/a0k273 HTH -- python -c print ''.join([chr(154 - ord(c)) for c in 'U(17zX(%,5.zmz5(17;8(%,5.Z65\'*9--56l7+-']) -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter listener thread?
Eric Brunel wrote: There's in fact no need to check regularly if there's something in the Queue: the secondary thread can post a tk custom event to trigger the treatment automatically from within the main GUI loop. See here: http://minilien.fr/a0k273 Appreciate the suggestion. This further helps simplify things. So far so good getting the UDP listener to work well within Tkinter. This listener takes an incoming CTI screen pop of the caller ID and queries it against a CRM database to bring up the appropriate contact record if applicable. One of these days I need to port the CTI library over from Ruby into Python so I don't have to rely on a UDP socket connection and can just pass the data natively within Python. But this is a workaround until that day comes. Thanks again. I am very impressed with the Python community in terms of knowledge and helpfulness. It's made matters a lot easier for this particular Python newbie... -- http://mail.python.org/mailman/listinfo/python-list
Tkinter listener thread?
I have a Python UDP listener socket that waits for incoming data. The socket runs as an endless loop. I would like to pop the incoming data into an existing Tkinter app that I have created. What's the easiest/most efficient way of handling this? Would I create a separate thread that has the listener set a certain Tkinter variable if there is incoming data? Any suggestions would be tremendously appreciated :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter listener thread?
gregarican wrote: I have a Python UDP listener socket that waits for incoming data. The socket runs as an endless loop. I would like to pop the incoming data into an existing Tkinter app that I have created. What's the easiest/most efficient way of handling this? Would I create a separate thread that has the listener set a certain Tkinter variable if there is incoming data? Any suggestions would be tremendously appreciated :-) http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/82965 -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC www.holdenweb.com PyCon TX 2006 www.python.org/pycon/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter listener thread?
On 26 Jan 2006 08:46:11 -0800, gregarican [EMAIL PROTECTED] wrote:
I have a Python UDP listener socket that waits for incoming data. The
socket runs as an endless loop. I would like to pop the incoming data
into an existing Tkinter app that I have created. What's the
easiest/most efficient way of handling this? Would I create a separate
thread that has the listener set a certain Tkinter variable if there is
incoming data? Any suggestions would be tremendously appreciated :-)
Here's an example of how you might do it using Twisted
from twisted.internet import protocol, reactor, tksupport
from twisted.application import service, internet
import Tkinter as Tk
class TkDisplayProtocol(protocol.DatagramProtocol):
def __init__(self, root):
self.root = root
self.frame = Tk.Frame(self.root)
self.frame.pack()
self.label = Tk.Label(self.frame)
self.label.pack()
tksupport.install(self.root)
def datagramReceived(self, data, addr):
self.label.configure(text=repr(data))
application = service.Application('UDP/Tk')
internet.UDPServer(
12345,
TkDisplayProtocol(Tk.Tk())).setServiceParent(application)
Save to udptk.tac and run using twistd -noy udotk.tac.
Jean-Paul
--
http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter listener thread?
On 2006-01-26, Steve Holden [EMAIL PROTECTED] wrote: gregarican wrote: I have a Python UDP listener socket that waits for incoming data. The socket runs as an endless loop. I would like to pop the incoming data into an existing Tkinter app that I have created. What's the easiest/most efficient way of handling this? Would I create a separate thread that has the listener set a certain Tkinter variable if there is incoming data? Any suggestions would be tremendously appreciated :-) http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/82965 That seems a bit complex. Why not just register the file descriptor and read-handler with Tk? http://www.faqts.com/knowledge_base/view.phtml/aid/3728 That way the read-handler gets called by Tk's event loop anytime there's receive data waiting. No extra thread, no synchronization worries. If the read-handler takes a _long_ time to complete, it does make your GUI pause, so that may be a concern. Unless tk.createfilehandler isn't supported no Wni32 platforms?? -- Grant Edwards grante Yow! Gee, I feel kind of at LIGHT in the head now, visi.comknowing I can't make my satellite dish PAYMENTS! -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter listener thread?
Grant Edwards wrote: Unless tk.createfilehandler isn't supported no Wni32 platforms?? Unfortunately that's the case. As of Python 2.3.4 under Windows XP the createfilehandler method isn't available. It's only for UNIX as Mac platforms AFAIK. Shame, as it would be relatively easy to implement. Instead I'll look to set/check some global flags to hopefully get things working smoothly. Using Qt it's so much easier. Some apps I used the QThread class, while others I just set as QTimer instance to run a regular background process :-( -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter listener thread?
Steve Holden wrote: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/82965 Thanks. I tried a variation of this Queue posting/Flag checking method and it worked to a tee. The problem was that my UDP socket query was blocking things so that thread was hanging everything up. So I used a socket timeout value along with a try: except: construction to query the socket for data. Now it's fine. -- http://mail.python.org/mailman/listinfo/python-list
