cwinxpbuttonst是CButtonST类派生类模拟看N的感觉…

代码说明：

CWinXPButtonST is a CButtonST derived class that emulates the look n feel of the buttons (or menu items) found in Office XP and, maybe, in Windows XP. Button borders can have square or rounded corners. This is just an example on how CButtonST can be used to create other button styles not supplied by defaultCButton