El martes, 25 de abril de 2023 05:20:16 -03 Axel Spoerl via Development escribió: > Good morning, > > this is a call to KDE experts on this line. > > In order to react to KDE color scheme changes, Qt listens to DBus for changes > (under more) of the keys > > * "ColorScheme" in org.kde.kdeglobals.General > * "widgetStyle" in org.kde.kdeglobals.KDE > > A DBus signal correctly received and processed by Qt would look like that: > > ---snip--- > method return time=1682062165.741561 sender=org.freedesktop.DBus -> > destination=:1.87 serial=50 reply_serial=89 > signal time=1682062165.742192 sender=:1.28 -> destination=(null destination) > serial=38 path=/org/freedesktop/portal/desktop; > interface=org.freedesktop.impl.portal.Settings; member=Setting > Changed > string "org.kde.kdeglobals.General" > string "ColorScheme" > variant string "BreezeLight" > ---snap--- > > On some systems, however, none of signals mentioned gets emitted. As a > consequence, Qt doesn't notify its applications: > https://bugreports.qt.io/browse/QTBUG-103093 > => I fail to reproduce the bug, so I can only assume that it a local > configuration issue (e.g. Plasma only installation). > => OTOH I can't find the spot in the KDE documentaiton, where it is defined > how to reliably subscribe to changes of color scheme, widget style and the > like. > > Questions: > a) In which cases are the mentioned DBus emitted or not? > b) Could you point me at the respective spot in the KDE documentation?
Worth to mention: the same code compiled with Qt 5 just works :-/
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