修复触控板滚动问题

Ink Canvas/App.xaml

@@ -6,6 +6,11 @@
              xmlns:ui="http://schemas.modernwpf.com/2019">
     <Application.Resources>
         <ResourceDictionary>
+            <Style TargetType="ScrollViewer">
+
+                <EventSetter Event="PreviewMouseWheel" Handler="ScrollViewer_PreviewMouseWheel"/>
+
+            </Style>
             <ResourceDictionary.MergedDictionaries>
                 <ui:ThemeResources RequestedTheme="Light"/>
                 <ui:XamlControlsResources />

Ink Canvas/App.xaml.cs

@@ -58,5 +58,27 @@ namespace Ink_Canvas
                 };
             }
         }
+
+        private void ScrollViewer_PreviewMouseWheel(object sender, System.Windows.Input.MouseWheelEventArgs e)
+        {
+            try
+            {
+                if (System.Windows.Forms.SystemInformation.MouseWheelScrollLines == -1)
+                    e.Handled = false;
+                else
+                    try
+                    {
+                        System.Windows.Controls.ScrollViewer SenderScrollViewer = (System.Windows.Controls.ScrollViewer)sender;
+                        SenderScrollViewer.ScrollToVerticalOffset(SenderScrollViewer.VerticalOffset - e.Delta * 10 * System.Windows.Forms.SystemInformation.MouseWheelScrollLines / (double)120);
+                        e.Handled = true;
+                    }
+                    catch
+                    {
+                    }
+            }
+            catch
+            {
+            }
+        }
     }
 }

Ink Canvas/MainWindow.xaml.cs

@@ -2854,7 +2854,7 @@ namespace Ink_Canvas
         #endregion
 
         #region Canvas
-
+        
         private void ComboBoxPenStyle_SelectionChanged(object sender, SelectionChangedEventArgs e)
         {
             if (!isLoaded) return;