[PySide] determine if pyside is run as standalone or inside of host app

Frank Rueter | OHUfx frank at ohufx.com
Mon Jul 14 01:47:45 CEST 2014

Ah, of course, much tidier. I will do that, thanks Sean!

On 14/07/14 2:17 AM, Sean Fisk wrote:
> Hi Frank,
> I would go for a different architecture if possible. Have you 
> considered giving TestWidget a signal which gets connected to 
> app.quit() in the standalone application? In the host application, 
> just don't connect it to anything. You could name the signal 
> 'quit_requested' or something like that, but adapt it to your 
> scenario. I'm not sure if this is possible in your situation; just a 
> suggestion.
> - Sean
> --
> Sean Fisk
> On Sun, Jul 13, 2014 at 9:19 AM, Frank Rueter | OHUfx <frank at ohufx.com 
> <mailto:frank at ohufx.com>> wrote:
>     Hi,
>     I have a QWidget that uses
>     self.setWindowFlags(QtCore.Qt.Popup)
>     This causes the widget to not quit the QApplication when it closes
>     even
>     though it's the main widget.
>     I can put something like QtGui.QApplication.instance().quit() into the
>     appropriate event to ensure the application closes properly, but
>     most of
>     the time this widget will be run from inside a host application,
>     not as
>     a standalone app, so closing the application instance would have fatal
>     consequences for the user.
>     What would be the best way to determine whether the widget is run as a
>     standalone, and I can quite the application safely, or if it's run
>     from
>     inside a host app?
>     In my current scenario I could check
>     QtGui.QApplication.applicationFilePath() for the host applications
>     that
>     this is mostly going to be run from, but if somebody else imports my
>     code into an app I didn't cater for, my QWidget will quit that
>     when the
>     widget closes, until I include the particular host in my code logic.
>     Here is a simple example that always manually quits the application
>     (when I need ti be clever and not quit if it's run from inside a
>     host):
>     http://pastebin.com/48y7nqc2
>     What's the best way to go about this?
>     Cheers,
>     frank
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