[PyQt] Waiting For A Signal

[Marc Thomas]

Hey Robert,

You are going to want to loop into threading. Essentially what is happening
right now is that your main thread (GUI thread) is kicking off a process
that runs for a while. While that process is happening, nothing else can
happen. If you multi-thread your application, you can kick that process off
in the background thus not locking up your GUI.

Here is an example of PyQt4 multi-threading I have written:
http://pastebin.com/YFASwSb9
This is good tutorial explaining the different components of
multi-threading with PyQT:
http://joplaete.wordpress.com/2010/07/21/threading-with-pyqt4/

Hope this helps!



On Tue, May 20, 2014 at 12:30 PM, Robert Kent <rob at gulon.co.uk> wrote:

> Hi All,
>
> As the subject line of suggests, I want to wait for a signal to be emitted
> (block essentially), but I want to do this whilst keeping the GUI alive. I
> have tried both creating my own event loop and re-implelmenting libqxt's
> QxtSignalWaiter, but my signal of choice is never caught until after either
> the event loop has quit of the signal waiter has stopped waiting. I'm
> guessing this is something to do with the way the event loop is executed in
> PyQt (or I'm doing something very wrong ;o). Has anyone had any success or
> experience with doing this in Python (I've done it before in C++).
>
> Thanks, Rob
>
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