You could try using a Qt::CrossCursor QCursor instead of your own crosshairs. You could also derive from QRubberBand and pay careful attention to how the QRubberBand::paintEvent() is implemented.
Guru
Re: How to make QT Mouse move event faster?
You could try using a Qt::CrossCursor QCursor instead of your own crosshairs. You could also derive from QRubberBand and pay careful attention to how the QRubberBand::paintEvent() is implemented.
<=== The Great Pumpkin says ===>
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Yippiyak (16th July 2018)
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