GetFileInformationByHandle() for stdio file handles

Question

Is there any way to use GetFileInformationByHandle() with stdio file handles allocated by fopen()? Using fstat() with fileno() is not sufficient for my purposes because I need to get some Windows-specific information that is not part of struct stat so I'm wondering whether there is any way to feed an stdio FILE* handle to GetFileInformationByHandle()?

Answer 1

Use _fileno() to get the file number (no I don't know why Microsoft added the _, other than for "ISO C++ conformance") and then _get_osfhandle() to go from file number to HANDLE. I don't remember offhand why the msvcrt uses file numbers instead of tying a FILE directly to a HANDLE (but I think it's for POSIX compatibility?).