/// <summary>
/// Invoked when this page will no longer be displayed in a Frame.
/// </summary>
/// <param name="e"></param>
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
DrawingPanel.StopProcessingInput();
}
/// <summary>
/// Invoked when this page will no longer be displayed in a Frame.
/// </summary>
/// <param name="e"></param>
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
DrawingPanel.StopProcessingInput();
}