/// <summary>
/// Raises the <see cref="E:System.Windows.Window.Closing"/> event.
/// </summary>
/// <param name="e">A <see cref="T:System.ComponentModel.CancelEventArgs"/> that contains the event data.</param>
protected override void OnClosing(CancelEventArgs e)
{
if (inputProvider != null)
{
inputProvider.Dispose();
inputProvider = null;
}
base.OnClosing(e);
}
/// <summary>
/// Raises the <see cref="E:System.Windows.Window.SourceInitialized"/> event.
/// </summary>
/// <param name="e">An <see cref="T:System.EventArgs"/> that contains the event data.</param>
protected override void OnSourceInitialized(EventArgs e)
{
inputProvider = new MultitouchInputProvider(PresentationSource.FromVisual(this));
base.OnSourceInitialized(e);
}