Retaining drawing across paintevents

Newsgroups	comp.lang.python
Date	2014-01-01 06:53 -0800
Message-ID	<396bc9f8-2ed6-4ebf-853d-a50e3c7ce521@googlegroups.com> (permalink)
Subject	Retaining drawing across paintevents
From	angedward3@gmail.com

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Hi all,

I am sub-classing the paintevent at the moment to create a 2D plot.

I find that I have to re-paint the whole widget every time I call an update(), as I have create a new QPainter() instance. Is there a way to update only a small part of the widget, while retaining the rest of the widget?

Thanks in advance
Ed

BTW if this is the wrong forum to post this, pls let me know.

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Retaining drawing across paintevents angedward3@gmail.com - 2014-01-01 06:53 -0800
  Re: Retaining drawing across paintevents Chris Angelico <rosuav@gmail.com> - 2014-01-02 02:05 +1100

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