DeltaManipulation in Windows Universal App

Question

I have found this example which seams to be exactly what I need. But it does not work in an universal app.

Xaml:

<Rectangle Name="TestRectangle"
Width="200"
Height="200"
Fill="Blue" 
ManipulationMode="All" />

C#:

public MainPage()
{
    InitializeComponent();

    // Add handler for the ManipulationDelta event
    TestRectangle.ManipulationDelta += new ManipulationDeltaEventHandler((sender, e) =>
    {
        UIElement element = sender as UIElement;
        CompositeTransform transform = element.RenderTransform as CompositeTransform;
        if (transform != null)
        {
            transform.ScaleX *= e.DeltaManipulation.Scale;
            transform.ScaleY *= e.DeltaManipulation.Scale;
            transform.Rotation += e.DeltaManipulation.Rotation * 180 / Math.PI;
            transform.TranslateX += e.DeltaManipulation.Translation.X;
            transform.TranslateY += e.DeltaManipulation.Translation.Y;
        }
    });

    TestRectangle.RenderTransform = new CompositeTransform();
}

Here is the error:

'Windows.UI.Xaml.Input.ManipulationDeltaRoutedEventArgs' does not contain a definition for 'DeltaManipulation' and no extension method 'DeltaManipulation' accepting a first argument of type 'Windows.UI.Xaml.Input.ManipulationDeltaRoutedEventArgs' could be found (are you missing a using directive or an assembly reference?)

How do I fix it?

Answer 1

According to MSDN, Windows.UI.Xaml.Input.ManipulationDeltaRoutedEventArgs has Delta property instead of DeltaManipulation . So try to replace DeltaManipulation with Delta :

if (transform != null)
{
    transform.ScaleX *= e.Delta.Scale;
    .....
    .....
}