[PyQt] SIP: passing exceptions Python -> C++

Phil Thompson phil at riverbankcomputing.com
Mon Apr 28 18:48:43 BST 2008

On Monday 28 April 2008, Jim Crowell wrote:
> I've got a C++ class with a whole bunch of virtual methods that are
> overridden in Python subclasses.
> These methods are callbacks, i.e. they're called repeatedly from a C++
> event loop.
> I want to catch any Python exceptions raised in any of these callbacks,
> print the error messages, and then raise a C++ exception that will cause
> the event loop to exit.
> Is there an elegant way to do this without essentially re-implementing
> all of the nice stuff that handles calling virtual methods? It looks
> like all of the existing exception-mapping stuff is for going the other
> direction, i.e. from C++ -> Python.

I'm afraid so. One for the TODO list.


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