Ok, tried with selector and check box.
I started script, check box appeared, i cheched it and recording to
wav file started.
Wait a bit and unchecked it, got file 2.7 Mbytes, not growing more,
then stopped the script.
FIle is corrupted.
Looked at your flow-graph.
You have to make the *filename* on the WAV sink change depending on
recording/not-recording.
Just use a conditional expression as the filename parameter in the
filename sink
"myfile" if recording_on else "/dev/null"
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
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