[C++-sig] Shared pointers and python subclasses

[Chad Austin]

When binding the RecordHandler subclass, you could try:

implicitly_convertable<SubClassPtr, RecordHandlerPtr>();

Boost.Python can't automatically figure out which HeldTypes are
implicitly convertible (atm), so you have to tell it.

Cheers,
Chad


On Thu, 09 Sep 2004 17:17:18 -0400, Itamar Shtull-Trauring
<itamar at itamarst.org> wrote:
> I have a structure somewhat like this (I simplified to explain):
> 
> typedef boost::shared_ptr<RecordHandler> RecordHandlerPtr;
> class_<RecordHandler, RecordHandlerWrap>("RecordHandler");
> class_<CacheRecordRetriever>("CacheRecordRetriever",init<RecordHandlerPtr>());
> 
> Now, if I subclass RecordHandler in python, I can't pass an instance of
> the subclass to CacheRecordRetriever's constructor in my Python code, it
> raises a RuntimeErorr claiming it's the wrong type. How do I solve this?
> 
> Thanks!
> 
> --
> Itamar Shtull-Trauring    http://itamarst.org