1 files changed, 3 insertions, 1 deletions
diff --git a/examples/widgets/desktop/systray/main.cpp b/examples/widgets/desktop/systray/main.cpp
index 49b0e10412..2d91e4ac36 100644
--- a/examples/widgets/desktop/systray/main.cpp
+++ b/examples/widgets/desktop/systray/main.cpp
@@ -59,10 +59,12 @@ int main(int argc, char *argv[])
 {
     Q_INIT_RESOURCE(systray);
 
+    QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
+
     QApplication app(argc, argv);
 
     if (!QSystemTrayIcon::isSystemTrayAvailable()) {
-        QMessageBox::critical(0, QObject::tr("Systray"),
+        QMessageBox::critical(nullptr, QObject::tr("Systray"),
                               QObject::tr("I couldn't detect any system tray "
                                           "on this system."));
         return 1;