[PyKDE] QCanvasItem constructor
phil at river-bank.demon.co.uk
Sun Dec 3 18:16:26 GMT 2000
Boudewijn Rempt wrote:
> I have a feeling I've found a bug in the wrapping of QCanvasItem - it
> doesn't recognize a subclassed QCanvas as a canvas:
> File "kurailviewer.py", line 41, in ?
> File "kurailviewer.py", line 28, in main
> File "kurailviewer.py", line 14, in __init__
> File "kurailviewer.py", line 7, in __init__
> QCanvasItem.__init__(self, canvas)
> File "/usr/local/lib/python2.0/site-packages/qt.py", line 172, in
> TypeError: Invalid argument types to QCanvasItem()
It's a documentation bug. If my understanding of C++ is correct,
QCanvasItem has a private, virtual abstract member funtion
(collidesWith()) so it can only be sub-classed by classes defined as
friends. The friends are the other canvas item classes - you must
sub-class from one of these.
I've updated the docs to try and make this clearer.
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