If you’re talking about a QRunnable receiving data from another QRunnable you are correct. QRunnable can’t receive data through signals. I learned that the hard way recently. You have to use QThread or Qt Concurent if you want to do that, see table called “Comparison of Solutions” here :
http://doc.qt.io/qt-5/threads-technologies.html From: Frank Rueter | OHUfx<mailto:fr...@ohufx.com> Sent: Sunday, October 22, 2017 5:40 PM To: pyside@qt-project.org<mailto:pyside@qt-project.org> Subject: Re: [PySide] sending data from urllib2.urlopen().read() via signal corrupts in receiver Interesting. I assumed you can't do that between different threads to I never tried it. On 10/23/2017 05:36 AM, Erik Johansson wrote: Had the same problem. Solved it by creating a QImage and emitting that. Cheers, Erik On Sun, Oct 22, 2017 at 11:19 AM, Frank Rueter | OHUfx <fr...@ohufx.com<mailto:fr...@ohufx.com>> wrote: quick follow up: I am now writing the files to a temp directory and only passing the respective path via the signal, but I'm still curious how I would do this without writing anything to disk. Cheers, frank On 10/22/2017 09:18 PM, Frank Rueter | OHUfx wrote: Hi, I am downloading a few images in a separate thread using QRunnable. To download I am just using urllib2.urlopen() like this: [...] def run(self): imageData = urllib2.urlopen(self.url).read() print 'emitted:', imageData self.signals.receivedData.emit(imageData) # this signal is declared like this: QtCore.Signal(str) However, the receiving slot is receiving nothing: def setPixmap(self, imageData): print 'received:', imageData pixmap = QtGui.QPixmap() pixmap.loadFromData(imageData) self.data['pixmap'] = pixmap I guess this is too naive an approach to download image data in a separate thread?! How can I fix this please? Cheers, frank -- [ohufxLogo 50x50]<http://www.ohufx.com> vfx compositing<http://ohufx.com/index.php/vfx-compositing> | workflow customisation and consulting<http://ohufx.com/index.php/vfx-customising> _______________________________________________ PySide mailing list PySide@qt-project.org<mailto:PySide@qt-project.org> http://lists.qt-project.org/mailman/listinfo/pyside _______________________________________________ PySide mailing list PySide@qt-project.org<mailto:PySide@qt-project.org> http://lists.qt-project.org/mailman/listinfo/pyside -- ERIK JOHANSSON Pipeline TD GOODBYE KANSAS STUDIOS Rosenlundsgatan 40, 4th floor 118 53 Stockholm, Sweden Ph: +46 8 556 990 00<tel:+46855699000> www.goodbyekansas.com<http://www.goodbyekansas.com> _______________________________________________ PySide mailing list PySide@qt-project.org<mailto:PySide@qt-project.org> http://lists.qt-project.org/mailman/listinfo/pyside
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