Core.WindowManager.addWindow C# (CSharp) Method

        public void addWindow(Window w)
        {
            if (topWindow != null)
            {
                var temp = new Window[backGroundWindows.Length + 1];
                backGroundWindows.CopyTo(temp, 0);
                temp[backGroundWindows.Length] = w;
                backGroundWindows = temp;
            }
            topWindow = w;
        }