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  1. Qt
  2. QTBUG-37270

global event filter installed by QQuickSystemPalette can cause performance issues

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    • e7d23a38556f8ab7adbadf636f087389de8a22ba

    Description

      Each instance of QQuickSystemPalette installs a global event filter with
      qApp->installEventFilter(this). QtQuick Controls creates a QQuickSystemPalette for each control so there are potentially a lot of event filters. In my (embedded) use-case this made touch interaction unusable.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-133703 QQuickSystemPalette uses deprecated QGuiApplication::paletteChanged() signal

          • P2: Important - Urgent, should be fixed, but will not stop the release.
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              Unassigned Unassigned
              molbrich Michael Olbrich
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