/// <summary>
/// Show About window in a dialog
/// </summary>
internal static void AboutWindow()
{
Window window = new About
{
Width = double.IsNaN(mainWindow.Width) ? 465 : mainWindow.Width,
Height = double.IsNaN(mainWindow.Height) ? 715 : mainWindow.Height,
Opacity = 0,
Owner = Application.Current.MainWindow,
};
var animation = new DoubleAnimation(1, TimeSpan.FromSeconds(.5));
window.BeginAnimation(UIElement.OpacityProperty, animation);
window.ShowDialog();
}