to improve button styles in Visual C-to improve button styles in Visual C++

以CButton为基类的BtnST类，它能设置按钮的一些属性-CButton in BtnST class-based categories, it can set the button properties

用于美化基于MFC的windows编程界面的.cpp文件，其中包括许多美化函数的实现-MFC-based windows for the beautification of programming interface. Cpp file, including many beautification function implementation