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Re: [Discuss-gnuradio] question about using qtgui_sink_c from c++

From: Tom Rondeau
Subject: Re: [Discuss-gnuradio] question about using qtgui_sink_c from c++
Date: Sun, 20 May 2012 17:44:00 -0400

On Sat, May 19, 2012 at 8:11 PM, Stephen <address@hidden> wrote:
> On 5/19/2012 3:00 PM, Tom Rondeau wrote:
>> Have you read up on Qt and how to handle the QApplication? They might
>> have some hints for you on how to handle your situation.
> If I create the block in the same thread I call exec() then it works. I
> was creating the block in my main thread and then spawning a boost
> thread to exec() the block. That didn't work.
> I also have a problem that about 25% of the time my app aborts when I
> try to use the qtgui sink.  Some times it runs just fine. Others it
> aborts. when it aborts I can start it again right away and it works.
> when I take the qt sink out it never aborts.
> I also see a performance difference when using grc. If I create a simple
> flowgraph with just a usrp sink and a gui fft window I can use higher
> sampling rates with the wxwidget version before I hit overruns.
> stephen

Can you send any info or messages when your program aborts?


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