/// <summary>
 /// Removes the specified item.
 /// </summary>
 /// <param name="item">The item.</param>
 public static void Remove(GDIObject item)
 {
     if (mHeap.Contains(item))
     {
         mHeap.Remove(item);
     }
 }
 /// <summary>
 /// Adds the specified item.
 /// </summary>
 /// <param name="item">The item.</param>
 public static void Add(GDIObject item)
 {
     mHeap.Add(item);
 }