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  1. Qt
  2. QTBUG-45055

Widget Styles: Per-Monitor DPI Aware inconsistency

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    Description

      On windows, Qt is by default, "Per-Monitor DPI Aware", as described there:
      https://doc-snapshots.qt.io/qt5-5.4/highdpi.html

      But QStyleHelper::dpiScaled(qreal value) which is used in many places of Qt, relies on the primary screen's DPI, not on the effective device DPI (as qt_effective_device_pixel_ratio does, (see qtbase\src\gui\image\qicon.cpp:118).

      This means, for example, in a setup with one UltraHD screen and one standard screen, sizes are not proper on the non-primary screen.

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          relates to

          Task - A task that needs to be done. QTBUG-40277 Adapt styles to High DPI

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed

          Task - A task that needs to be done. QTBUG-53022 HighDPi: Update scale factor setting for devicePixelRatio scaling (AA_EnableHighDpiScaling)

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          resulted in

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-82356 Calling QStyle::pixelMetric without style options lead to DPI scaling issues

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed
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              Unassigned Unassigned
              jirauser26727 user-04d21 (Inactive)
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                Resolved:

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