自己写的VB调用VC编写的DLL库函数的例子。因VB是弱类型的语言所以很多操作用C实现简单而用VB实现很困难，这时用VC生成函数封装到DLL里，由VB调用显得很轻巧自然，尤其是有位运算时。-Written in VB to call their own VC prepared DLL library function example. VB is a result of the weak type of language used to operate many C to achieve a s