button in Popup won't change to Normal from PointerOver(with skydrive sample)

Hello programmer

In your sample code I have added just two lines(Bold Lines) as follow,

private void OnAppBarShowPopupClicked(object sender, RoutedEventArgs e)
        {
            try
            {

                if (!DeleteConfirmPopup.IsOpen)
                {
                    // 计算位置
                    Rect rect = GetElementRect((FrameworkElement)sender);

                    DeleteConfirmPopup.VerticalOffset = rect.Y - 150;
                    DeleteConfirmPopup.HorizontalOffset = (rect.X > (Window.Current.Bounds.Width / 2) ? (rect.X - 350) : (rect.X));

                    DeleteConfirmPopup.IsOpen = true;
                    DeleteConfirmBtn.Visibility = Visibility.Visible;
                }

            }
            catch (Exception)
            {
                // 
            } 
        }



private void OnBugHelpButtonClicked(object sender, RoutedEventArgs e)
        {
            if (bottomAppbar_test.IsOpen)
            {
                bottomAppbar_test.IsOpen = false;

            }

            if (DeleteConfirmPopup.IsOpen)
            {
                
                DeleteConfirmPopup.IsOpen = false;
            }
            DeleteConfirmBtn.Visibility = Visibility.Collapsed;
        }

by doing this way the problem is solved,

but there can be better solution for this. Please check this with your requirement and then implement.

Thanks.

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