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  1. Qt
  2. QTBUG-63548

QGuiApplication::devicePixelRatio() provides out-of-date value if displays change after app launch

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Details

    • Bug
    • Resolution: Done
    • P2: Important
    • None
    • 5.10.0 Alpha, 5.12.0 RC
    • GUI: Window management, GUI: Workspace
    • None
    • macOS
    • ba304af284f4cbb579d35046c0cf4c1537af0fec

    Description

      QGuiApplication::devicePixelRatio() caches its value to improve performance. However, its cache is not refreshed when the system's displays change (if a HiDPI/Retina display is added or removed, or if a display's devicePixelRatio changes), so it can provide an out-of-date value.

      Attachments

        For Gerrit Dashboard: QTBUG-63548
        # Subject Branch Project Status CR V
        207453,8 Refresh QGuiApplication's devicePixelRatio cache when screens change dev qt/qtbase Status: MERGED +2 0

        Activity

          People

            qt.team.graphics.and.multimedia Qt Graphics Team
            smokris Steve Mokris
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            Dates

              Created:
              Updated:
              Resolved:

              Gerrit Reviews

                There are no open Gerrit changes