To expand on ikegami's comment, you should be careful of packing. You might know this, and apologies if you do, but members of a struct might have pad bytes added by the compiler to force those members onto boundaries, depending on the type. For example:
struct mystruct {
    char a;
    int b;
    char c;
};

[download]
would be 12 bytes on many 32-bit compilers, adding 3 bytes after each char to align the int on a word bounday, and to make the struct a whole number of words. You have to be aware of the padding which can vary between compilers, command-line options, and pragmas (some compilers support #pragma packed).

If it was me then I would write a wrapper in XS to read the C++ output, but then I am a sucker for making work for myself.

In reply to Re: Opening certain files by cdarke
in thread Opening certain files by Dwood

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