28.09.2019 18:04, Christoph Cullmann пишет:
Hi,

I just checked again the HIDPI support of Kate/KWrite on Windows and it "sucked".

It seems we never properly did setup the stuff to auto-scale, e.g. the

 QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling, true);

call was missing, we only had the

 QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps, true);

part that we sprinkled in most of KDE's things in the past.

I now rectified that for Kate/KWrite, shall we do this for all our applications?

Hi,
This is wrong to set it manually, cause it's equivalent to setting QT_AUTO_SCREEN_SCALE_FACTOR=1, which in turn conflicts with setting QT_SCREEN_SCALE_FACTORS (Scale Display button in KScreen module).
See also https://doc.qt.io/qt-5/highdpi.html#high-dpi-support-in-qt
And please, use phabricator.

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