This method can be hard to implement, can be annoyingly slow, and may introduce too much visual complexity into the interface. The problem is that a drag-and-drop operation can require a pretty precise pointer.

• 但是这种方法难以实现，速度太慢，所以很可能不是一个恰当的解决方案，问题在于源和目标操作需要相当精确的指针。