public override void Remove(UnSafeGraphics g) { complexGraphics.Remove(g); }
public override void Add(UnSafeGraphics g) { complexGraphics.Add(g); }
public override void Remove(UnSafeGraphics g) { throw new Exception("不能向简单图形Circle移除其他图形"); }
public override void Add(UnSafeGraphics g) { throw new Exception("不能向简单图形Circle添加其他图形"); }
public abstract void Remove(UnSafeGraphics g);
public abstract void Add(UnSafeGraphics g);