Thanks Derek, I never spotted the COPY block.
Kind regards, Nigel From: Derek Kozel [mailto:derek.ko...@ettus.com] Sent: Tuesday, February 14, 2017 9:37 PM To: Nigel Steed (XENINT) <nigel.st...@xenint.com> Cc: discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] Enable/Disable Processing on QT Tab Page Selection Hello Nigel, The Copy block is a useful block for enabling/disabling portions of flowgraphs. I think you will need a custom python module (which can be included in GRC) to do the tab detection. I think having the ability to register functions onto the currentChanged signal or similar would be a useful addition to the qtgui Tab Widget. https://github.com/gnuradio/gnuradio/blob/master/gr-qtgui/grc/qtgui_tab_widget.xml http://doc-snapshots.qt.io/4.8/qtabwidget.html#currentChanged Regards, Derek On Tue, Feb 14, 2017 at 7:27 AM, Nigel Steed (XENINT) <nigel.st...@xenint.com<mailto:nigel.st...@xenint.com>> wrote: Hi All, I have prepared a GRC Flowgraph with several tab pages using the QT Tab Widget. Each tab page has different displays such as spectrograms, waterfalls etc. Behind these tab screens I have separate processing blocks running to generate the data to display, all in parallel. I am wondering if there is a neat way to only enable processing blocks when the corresponding tab is active ? My first attempt at this was to use a number of throttle blocks located in different signal paths associated for each tab, and dynamically set the sample rate to 0 when the tab is not active to disable data flow – but this module seems to cause the entire flowgraph to stop. My next approach is to generate an OOT Module to enable/disable data flow unless anyone knows of a neater way ? Is it possible to detect what tab is selected from within GRC ? Any comments much appreciated. Nigel _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org<mailto:Discuss-gnuradio@gnu.org> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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