Re: Crash when re-parenting GtkDataBox



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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