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Why do I get the following error when using QPainter: QPainter::begin: Paint device returned engine == 0, type: 1?
This error can occur if you try to use the painter on a subclass of QScrollArea [doc.qt.nokia.com], and you don’t pass in the viewport() [doc.qt.nokia.com] as the device to paint on. So if you are painting on a QTableWidget [doc.qt.nokia.com] for instance, make sure you instantiate the painter as follows:
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