My module Win32::Filetime takes a file path as an argument, and creates a windows file handle. With that file handle it's simple to perform the necessary calculations. I let the windows API do all the work. from the windows API Documentation file time is defined like so: 
typedef struct _FILETIME { 
    DWORD dwLowDateTime; 
    DWORD dwHighDateTime; 
} FILETIME, *PFILETIME;

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A little confusing as the bits need to be packed in the reverse order of the filetime integer. I plan to add a class method to directly decode the 64 bit-integer to that module, only problem is that i only encounter VT_FILETIME as a pointer to a struct through the API. Where else does this (bizzarre) time format crop up in the wild? I'd like to test it the raw integer but I've not yet seen a function that returns it in this form.

In reply to Re: Win32 FILETIME and 64-bit numbers by thunders
in thread Win32 FILETIME and 64-bit numbers by John M. Dlugosz

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