Adds Charmap to scrolling demo

UICatalog/Scenarios/CharacterMap.cs

@@ -550,13 +550,14 @@ internal class CharMap : View
         if (e.MouseEvent.Flags == MouseFlags.WheeledDown)
         {
             ScrollVertical (1);
-
+            e.Handled = true;
             return;
         }
 
         if (e.MouseEvent.Flags == MouseFlags.WheeledUp)
         {
             ScrollVertical (-1);
+            e.Handled = true;
 
             return;
         }
@@ -564,6 +565,7 @@ internal class CharMap : View
         if (e.MouseEvent.Flags == MouseFlags.WheeledRight)
         {
             ScrollHorizontal (1);
+            e.Handled = true;
 
             return;
         }
@@ -571,6 +573,8 @@ internal class CharMap : View
         if (e.MouseEvent.Flags == MouseFlags.WheeledLeft)
         {
             ScrollHorizontal (-1);
+            e.Handled = true;
+
         }
     }
 

UICatalog/Scenarios/VirtualContentScrolling.cs

@@ -117,9 +117,15 @@ public class VirtualScrolling : Scenario
                                   };
                               };
 
-        var button = new Button { X = Pos.Center (), Y = Pos.Center (), Text = "Centered Button" };
+        var charMap = new Scenarios.CharMap ()
+        {
+            X = Pos.Center (),
+            Y = Pos.Center (),
+            Width = 30,
+            Height = 10
+        };
 
-        button.Accept += (s, e) =>
+        charMap.Accept += (s, e) =>
                              MessageBox.Query (20, 7, "Hi", $"Am I a {view.GetType ().Name}?", "Yes", "No");
 
         var label = new TextView
@@ -154,7 +160,7 @@ public class VirtualScrolling : Scenario
         view.Padding.Data = "Padding";
         view.Padding.Thickness = new (3);
 
-        view.Add (tf1, color, button, label, btnButtonInWindow, tv);
+        view.Add (tf1, color, charMap, label, btnButtonInWindow, tv);
         var label2 = new Label
         {
             X = 0,