Qt 6.8 warnings fixed

src/graphic/QskGraphic.cpp

@@ -496,6 +496,16 @@ int QskGraphic::metric( PaintDeviceMetric deviceMetric ) const
             value = metric( PdmDevicePixelRatio ) * devicePixelRatioFScale();
             break;
         }
+#if QT_VERSION >= QT_VERSION_CHECK( 6, 8, 0 )
+        case PdmDevicePixelRatioF_EncodedA:
+        case PdmDevicePixelRatioF_EncodedB:
+        {
+#if 0
+            value = QPaintDevice::encodeMetricF( metric, devicePixelRatio() );
+#endif
+            break;
+        }
+#endif
     }
 
     return value;

src/graphic/QskGraphic.h

@@ -35,6 +35,8 @@ class QSK_EXPORT QskGraphic : public QPaintDevice
     Q_PROPERTY( QSizeF defaultSize READ defaultSize )
     Q_PROPERTY( quint64 modificationId READ modificationId )
 
+    using Inherited = QPaintDevice;
+
   public:
     enum RenderHint
     {