Determing a paint device
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I couldn't find anything, but I want to make sure I didn't over look anything. In a widget's paintEvent, can you find out what you are painting to? ie a image, screen or printer?
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You could try dynamic casting the paintDevice that you can get from QPainter to one of the possible subclasses of QPaintDevice, and checking if you get a non-0 result?
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But ensure, that Qt was build using RTTI, which is switched off by default. qobject_cast does not work, as QPaintDevice is not a subclass of QObject.
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Grab the QPaintDevice from the QPainter, then the QPaintEngine using QPaintDevice::paintEngine(), and finally use type() to figure it out.
(BTW, are we talking about things like QWidget::render? If not, what's exactly your use case?)
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[quote author="peppe" date="1316815782"](BTW, are we talking about things like QWidget::render? If not, what's exactly your use case?)[/quote]
Correct, I'm trying to prevent certian attributes from being painted when painting to a printer in a custom widet that I'm working on.
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Then you can use type(). :)
