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List:       pykde
Subject:    Re: [PyKDE] PyQT 4.x Display Roles
From:       Andreas Pakulat <apaku () gmx ! de>
Date:       2006-10-12 7:42:16
Message-ID: 20061012074216.GB6736 () morpheus ! apaku ! dnsalias ! org
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On 11.10.06 19:46:45, Matt Chambers wrote:
> Many examples show data() actually doing stuff like
> 
> if role != QtCore.Qt.DisplayRole:
>    return QtCore.QVariant()

/me too.

> I was able to eek out quite a bit more speed by creating a global instance of 
> QVariant and returning the same one over and over again, instead of
> creating a new object every time data is called, which can be hundreds of times 
> in just a few seconds.
> 
> so I do:
> if role != QtCore.Qt.DisplayRole:
>    return EMPTY_QVARIANT

Now I got it ;)

> My cpu fan still comes on if I use the scroll bar but its not as bad.

That's not really a profiling tool...

Andreas

-- 
Don't let your mind wander -- it's too little to be let out alone.

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