[Qgis-developer] Is it possible to re-use print composer code to
build a web service ?
Alessandro Pasotti
apasotti at gmail.com
Mon Dec 20 10:36:18 EST 2010
2010/12/20 Martin Dobias <wonder.sk at gmail.com>
> On Mon, Dec 20, 2010 at 4:03 PM, Alessandro Pasotti <apasotti at gmail.com>
> wrote:
> >
> > I've also tried that way...
> > I've got no more than segfaults:
> > http://dpaste.com/288618/
> > Can you please take a quick look to my experiment ?
> > http://dpaste.com/288616/
>
> It seems that the segfault happens in the python finalization code.
> Such crashes happen if the qt objects are deleted in wrong order.
> Presumably the QApplication object has been deleted earlier than the
> composition. That could be solved by various ways, for example,
> delete the composition at the end or set QApplication to be parent of
> the composition.
>
> Since the code crashes in the finalization stage, you should get the
> output png file anyway. Can you please check?
>
Yes, the out.png is there but it contains a blank (white) image.
adding
c.setParent(app)
did not help, nor did
del c
gdb bt is similar: still crashes in the destructor of QGraphicsScene.
PS: I'm using current qgis trunk.
--
Alessandro Pasotti
w3: www.itopen.it
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