I'm having difficulty figuring out a simple way to dump unmanaged structure
and/or class data to binary files.

In standard C++:
--------------------------
typedef struct tagS1
{
    DWORD dwBlah;
    CHAR     szBlah[64];
} S1;

...

S1 s1;

FILE *fd = fopen ("c:\....", "wb");

fwrite (&s1, sizeof(s1), 1, fd);

fclose (fd);
--------------------------

I really don't want to have to move a ton of pre-defined structures to
managed code and use BinaryFormatters, pad my strings, etc.

I attempted to use fwrite in managed c++, but it appears to cause an error
in the internal file-locking mechanism.

Ultimately, I'm hoping to take advantage of some of the managed set,
especially easy GUI creation, but I need some pure-C++ functionality (such
as what's described above).  Doesn't managed C++ support the standard C++
libraries?  If not, isn't that contrary to it's purpose?

Any info or advice would be GREATLY appreciated :)

I'd like to harness some of the ease of the .net framework (better than
MFC), but without losing the ability to write regular old C++.  Is it even
possible?