[Gui] fix HiDPI rounding bug

As reported in https://forum.freecadweb.org/viewtopic.php?f=10&t=56425&start=20#p485809 this PR fixes the problem reported here: https://forum.freecadweb.org/viewtopic.php?f=10&t=56425&start=20#p485759
FreeCAD · Mar 10, 2021 · f4574cf · f4574cf
1 parent 159a71b
commit f4574cf
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/Gui/Application.cpp b/src/Gui/Application.cpp
@@ -1937,6 +1937,9 @@ void Application::runApplication(void)
     else {
         // Enable automatic scaling based on pixel density of display (added in Qt 5.6)
         QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+#if QT_VERSION >= QT_VERSION_CHECK(5,14,0)
+        QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
+#endif
     }
 #endif // QT_VERSION >= 0x050600