Hi,
after reading https://doc.qt.io/qt-5/highdpi.html it is still a bit
unclear to me,
what is the correct sequence of attribute setting to have proper HiDPI
support on the
X11/Windows/macOS platforms (including support for scales like 150%).
At the moment, e.g. in Kate, we try (before we init the QApplication):
/**
* enable high dpi support
*/
QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps, true);
QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling, true);
/**
* allow fractional scaling
*/
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
#endif
Is that actually the right way to do it?
Does one actually need the Qt::AA_EnableHighDpiScaling call?
We got some reports that we behave strangely (weird sizes) since we
added Qt::AA_EnableHighDpiScaling.
If I miss some example snippet in the documentation, any pointer is
welcome ;=)
Greetings
Christoph
--
Ignorance is bliss...
https://cullmann.io | https://kate-editor.org
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