title: Why would dragging a Xamarin scrollview not work when the mouse does work
body: <p>I have a very simple Xamarin forms app which contains a scrollview, and inside is a stacklayout.</p>
  
  <p>When deployed on Windows, the mouse works correctly to scroll the scrollview with a scrollbar. However, touch/drag does not work at all to scroll the same control. Do I have to do something special to enable touch/drag to scroll? I figured this would just work.</p>
  
  <p>I'm not sure even where to start troubleshooting.</p>
  
  <p>I am targeting Windows 10. Other platforms optional at this point.</p>
  
  <p>The structure of UI classes I have is this:</p>
  
  <pre><code>ContentPage.Content = StackLayout1
  StackLayout1.Children = { StackLayout2, Scrollview }
  StackLayout2 contains an entry field and two buttons
  ScrollView, which is the problem, contains another StackLayout
  Inside that I have some labels and some grids
  </code></pre>
  
  <p>Following is a simplified repro. Running in the android emulator on my (touch capable) dev machine scrolling with touch works, running in the Windows 8.1 emulator, scrolling only works with a mouse, not with touch.</p>
  
  <pre><code> public App() {
  
          StackLayout sl = new StackLayout();
  
          for (int i = 1; i &lt; 20; i++) {
              sl.Children.Add( new Label { Text = "Label1", FontSize = 50, HeightRequest = 100 } );
          }
  
          ScrollView sv = new ScrollView { VerticalOptions = LayoutOptions.FillAndExpand };
  
          sv.Content = sl;
  
          ContentPage cp = new ContentPage();
          cp.Content = sv;
  
          MainPage = cp;
  
  
      }
  </code></pre>
  
  <p>Does Xamarin not handle Windows devices with touch, like Surface or other windows tablets? Or?</p>