Qt: Use DevicePixelRatioChange for DisplayWidget

src/duckstation-qt/displaywidget.cpp

@@ -356,10 +356,8 @@ bool DisplayWidget::event(QEvent* event)
       return true;
     }
 
-      // According to https://bugreports.qt.io/browse/QTBUG-95925 the recommended practice for handling DPI change is
-      // responding to paint events
-    case QEvent::Paint:
     case QEvent::Resize:
+    case QEvent::DevicePixelRatioChange:
     {
       QWidget::event(event);
 
@@ -397,6 +395,9 @@ bool DisplayWidget::event(QEvent* event)
       return true;
     }
 
+    case QEvent::Paint:
+      return true;
+
     case QEvent::WindowStateChange:
     {
       QWidget::event(event);
@@ -599,8 +600,8 @@ bool AuxiliaryDisplayWidget::event(QEvent* event)
       return true;
     }
 
-    case QEvent::Paint:
     case QEvent::Resize:
+    case QEvent::DevicePixelRatioChange:
     {
       QWidget::event(event);
 
@@ -626,6 +627,9 @@ bool AuxiliaryDisplayWidget::event(QEvent* event)
       return true;
     }
 
+    case QEvent::Paint:
+      return true;
+
     default:
       return QWidget::event(event);
   }