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List:       pykde
Subject:    Re: [PyKDE] PyQt Metaclass programming
From:       "Phil Thompson" <phil () riverbankcomputing ! co ! uk>
Date:       2004-10-28 7:59:02
Message-ID: 17324.82.68.80.137.1098950342.squirrel () 82 ! 68 ! 80 ! 137
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> Howdy!
>
> I'm presently using QCustomEvent quite often, and decided to whip up a
> solution using metaclasses.  The idea being that the custom event number
> could be automatically incremented for each custom event -- so it would
> be unnecessary to number them manually.
>
> However, trying to create a subclass of class 'type' and assign it to a
> class with __metaclass__ generates an error.  Turns out, sip.wrappertype
> is the metaclass of QCustomEvent.  However, sip.wrappertype does not
> appear to be visible in the sip module.
>
> Does anyone know an easy way to attach a metaclass to a subclass of a
> PyQt class?  It is simple enough to make a class factory, but it seems
> more elegant to delegate that task to a metaclass.  Thanks!

Would it help if sip.wrappertype was placed in the sip module dictionary
so that you could sub-class it?

Phil

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