Re: Crash when re-parenting GtkDataBox

["Dr. Roland Bock" <box2OO6 eudoxos de>]

Hi John,

this sounds interesting since many users asked for such a feature in the 
past. I won't be able to look at it in any detail before the 12th or so, 
though, since I am under pretty heavy workload until then.

Regarding the crash I sure hope that others on this list have more time 
at the moment and might take a look :-)

Regards,

Roland

John Stowers wrote:
> Hi,
>
> I have created an animated autoscaling plotting widget, based on the old 
> one that used to be distributed as an example with gtkdatabox ~=  0.4 or so.
>
> It basically derives from GtkDataBox and when constructed it adds n 
> GtkDataBoxGraph line graphs to itself, and a grid.
>
> The idea is that you can keep feeding it data continuously, and it will 
> rescale and redraw the n lines (with a fixed history of points).
>
> However I am currently experiencing segmentation faults when this widget 
> is reparented. I have been having trouble debugging the crash. The 
> backtrace reveals a crash in gtk, and not anything related to either my, 
> or the gtkdatabox code AFAICT.
>
> I was wondering if someone could take a look at the attached example, 
> and see if you can spot the error.
>
> It is also available from
>
> svn co 
> https://open.grcnz.com/svn/albatross/branches/groundstation/test-sliding-plot2
>
> I hope that once it is working reliably, it might be interesing enough 
> to go upstream. What are your thoughts?
>
> Regards
>
> John
>
>
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