-api-id -api-type T:Windows.UI.Xaml.Controls.Primitives.DragDeltaEventArgs winrt class Windows.UI.Xaml.Controls.Primitives.DragDeltaEventArgs -description Provides data for the DragDelta event that occurs one or more times when a user drags a Thumb control with the mouse. -remarks -examples -see-also RoutedEventArgs