[Qt-interest] remove QgRaphicsItem from parent

[Rainer Wiesenfarth]

From: Riccardo Roasio [mailto:riccardo.roasio at gmail.com] 
> But it seems not to work..
> 
> i use this code:
> 
>   for(int i=0;i<elements.size();i++)
>       {
>         ReceiptElement *e=elements.at(i);
>         e->~QGraphicsItem();
>       }
> 
> [...]

Should read similar to this:

while (! elements.isEmpty ())
{
    delete elements.takeFirst ();
}

You have to use "delete e;" instead of "e->~QGraphicsItem();", but
delete'ing "e" without removing it from the list will cause a dangling
reference in the list.

If you are new to C++, I would like to recommend lecture of
http://www.parashift.com/c++-faq-lite/ or similar. It is worth been read
even for advanced C++ programmers.

Best Regards / Mit freundlichen Grüßen
Rainer Wiesenfarth

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