说明：  在MFC中，用列表框（CListBox）来显示多个字符串是一种很方便的方法。但缺省的列表框水平滚动条不够智能——这里智能的含义是：在应该出现的时候出现，不应该出现的时候消失，而且应能自动调节自己的大小。本文通过实例说明了存在的问题和解决办法，提供了代码实现。
(In MFC, using the list box (CListBox) to display multiple strings is a very convenient way. But the default list box horizontal scroll bar is not smart enough- the meaning here is: when it should appear, should not appear when the disappearance, and should be able to automatically adjust their size. This article illustrates the existing problems and solutions, provides a code to achieve.)