How to force Visual Studio preprocessor case sensitivity with #includes?

Question

If you have a header file named ThisIsAHeaderFile.h, the following will still locate the file in Visual Studio:

#include 

Answer 1

You can't, because the Windows file system is itself case-insensitive.

If you could get into a situation where you had both RICHIE.h and richie.h, it might make sense to control case sensitivity, but you can't.