Conversely, the probability of this person discarding his work is at least a thousand to one against, yet the typical application always includes a dialog box asking the user if he wants to save his changes, like the one shown in Figure 10-4.

• 显然，用户选择保存工作1 000倍大于不保存的情况。 然而典型的应用程序总是包含一个对话框询问用户是否想要保持其更改，如图10-4所示。