>Try looking at QHighDpiScaling::initHighDpiScaling() and QHighDpiScaling::updateHighDpiScaling(). The latter should eventually make a call to QWindowsScreen:: pixelDensity() which I would expect to return 2 in your case.
Debugging this I can see that pixelDensity returns 1.0. qwindowscreen.cpp L281: const qreal physicalDpi = m_data.geometry.width() / m_data.physicalSizeMM.width() * qreal(25.4); My data: m_data.geometry.width() = 3840 m_data.physicalSizeMM.width() = 1355 This seems strange if I should intrepret this as physical MM since my monitor is about 530mm Wide. It seems like the ratio is about 25.4 between the value and the actual width.... So if m_data.physicalSizeMM.width actually contained the width of my monitor in MM pixelDensity would return 2. Perhaps there is some strange going on here? Best regards Johan
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