How to know when and which files are changed in windows filesystem with winapi

Question

I make program with spyware features for education, and I need to know in the program when file system is changing file, and what file is being changed.

How can I do

Answer 1

On Windows, look at SHChangeNotifyRegister(). Not only does it tell you what kind of change occured, but it also tells you which exact file(s) were changed.