Search code examples
pythonpygtkglade

Update status bar when receiving message?

I am quite new to GUI design and struggle to communicae with my core application.

I have a Thread that I use to run my core code. It is started when the user clicks on a start button. On the other side, I have my gui; and I would like it to be updated during the process.

My Thread currently populates a Queue, and I want to set the messages of this Queue in the status bar.

Currently, I use : 

     while not self.stopPull:
         try:
             print self.mess_queue.get() # would set my status bar
         except Queue.Empty:
            continue

The Thread code is really basic:

    while not self.stoprequest.isSet():
            bla()#some processing . . .
            self.result_q.put("bla")
            bla()#some other processing . . .
            self.result_q.put("blabla")

Thing is, this is of course blocking . . .

So do I have to create another Thread to listen to new messages in my Queue, or is there a way to have some kind of interruptions as a new message is pulled ?

Once again, I am completely ignorant with communication process, and I must miss some basic keywords, because I couldn't find documentation on the subject on the web.

Thank you for your hel !

Solution

  • In order for a GUI to be non blocking, one has to use threads.

    The pygtk FAQ has a part dedicated to this : http://faq.pygtk.org/index.py?req=all#20.1