Hi. I want to determine how much pixels in 10 mm.
I use the next calculations: static const qreal fingerSize = 0.0393700787 * 10; static const qreal h = (qreal) QApplication::desktop()->physicalDpiY() * fingerSize; And this calculations return to me 28 that on my desktop is 5 mm only. 0.0393700787 is how much inches in millimeter... What am I doing wrong?
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