OnDrawSplitter( CDC* pDC, ESplitType nType, const CRect& rect );
中的nType参数值，看的不是很明白，如下面，请高手帮我解析下，下面这几个参数的详细意思，
A value of the enum ESplitType, which can be one of the following:
splitBox   The splitter drag box.
splitBar   The bar that appears between the two split windows.
splitIntersection The intersection of the split windows. This element will not be called when running on Windows 95.
splitBorder   The split window borders.
splitBox，splitBar，splitIntersection，splitBorder，看了后觉的模模糊糊，觉的，不知怎么区分它们，可能是英文不太好吧。希望哪位帮我解析一下，谢谢