不记得在哪个地方得到了一个MD5加密法的类，由于开发的原因要在WTL中使用MD5加密法，但是，这个类并不能直接的用在WTL中(In MFC it was an easy job ）,所以我就修改了一下，以方便大家以后在WTL中使用MD5加密法。-not remember where the MD5 has been a kind of cryptography, the result of the development of the

材料力学课程的作业,用于惯性矩的计算,但也是我平时学VB的积累,-Mechanics of materials course assignments, used for the calculation of moment of inertia, but it is also my usual learning VB accumulation,