D7943: Explicitely unset QtQuickControls desktop style for non-QApplications

[Antonio Rojas]

arojas created this revision.
arojas added reviewers: Plasma, davidedmundson.
Restricted Application added a project: Plasma.
Restricted Application added a subscriber: plasma-devel.

REVISION SUMMARY
  QGuiApplications will crash if the QtQuickControls style (either 1 or 2) is set to desktop, so make sure to unset it in that case.

TEST PLAN
  Login to Plasma session, make sure that QT_QUICK_CONTROLS_STYLE=org.kde.desktop and QT_QUICK_CONTROLS_1_STYLE=/whatever/Desktop, check that Minuet, KAlgebra Mobile and the mapviewer example from QtLocation run correctly and don't crash anymore

REPOSITORY
  R135 Integration for Qt applications in Plasma

REVISION DETAIL
  https://phabricator.kde.org/D7943

AFFECTED FILES
  src/platformtheme/kdeplatformtheme.cpp

To: arojas, #plasma, davidedmundson
Cc: plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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