MFC 对话框，运用ClientDC绘制静态曲线，运用曲线像素取反擦除曲线。很好的静态曲线绘制代码，简单易懂，稍加修改可绘制自己的曲线。-MFC dialog box, use ClientDC draw static curve, the use of curve-pixel to take anti-erasing curve. Very good static curve drawing code, easy to understand, a little change can draw

3.给定键值，通过B+树进行查找。同时比较与直接扫描表的性能差别。（利用B+树时可根据内存大小决定放置多少层次到内存）-B+ Tree

SpringMVC+MyBatis简单的增删改查示例代码(SpringMVC+MyBatis simple additions and deletions to check the sample code)