Import data from Scubapro Aladin Sport Matrix

[Berthold Stoeger]

On Montag, 16. Oktober 2017 08:06:55 CEST Berthold Stoeger wrote:
> Dear all,
> 
> On Sonntag, 15. Oktober 2017 22:08:52 CEST Berthold Stoeger wrote:
> > By the way, there seems to be a strange bug(?): for the first failed
> > download I get an information window. For each subsequent retry there is
> > an
> > additional window. E.g. for the 5th failed download it opens 5 information
> > windows at once.
> 
> Answering to myself here: The issue seems to be the
>   connect(&thread, SIGNAL(finished()), ...);
> call in on_downloadCancelRetryButton_clicked(), which apparently is
> accumulative. Moving this call to the constructor solves the "problem".
> That being said, I don't understand anything of that Qt SIGNAL/SLOT
> business. Moreover, there is a second connect call, which perhaps should
> also be called only once.

Related minor issue: by not clearing the error string of the thread a 
successful download after a failed download would still show an error message. 
Trivial patch attached. Not exactly sure where to put the error.clear() 
though.

Berthold
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