binary file/o in managed c++

[The unProfessional]

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 BinaryFormatter s, 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?

--
Bill Merrill
Lead Developer
Merchant Companion

[Ronald Laeremans [MSFT]]

There is no reason that I know off that fwrite should not work identically.
Do you have a small repro case you could share?

Ronald Laeremans
Visual C++ team

"The unProfessional" <sp**@shitbits. com> wrote in message
news:Eu******** ************@mp owercom.net...

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 BinaryFormatter s, 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?

--
Bill Merrill
Lead Developer
Merchant Companion

[The unProfessional]

Hi Ronald,

Thanks alot for your time.

I'll put together a quick example and send it on over... Should I email you
directly?

Sincerely,
Bill

"Ronald Laeremans [MSFT]" <ro*****@online .microsoft.com> wrote in message
news:O8******** ******@TK2MSFTN GP15.phx.gbl...

There is no reason that I know off that fwrite should not work identically. Do you have a small repro case you could share?

Ronald Laeremans
Visual C++ team

"The unProfessional" <sp**@shitbits. com> wrote in message
news:Eu******** ************@mp owercom.net...

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 BinaryFormatter s, 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?

--
Bill Merrill
Lead Developer
Merchant Companion

[Ronald Laeremans [MSFT]]

Yes, you can mail me. The obvious transformation of my posting alias is my
real MS email address.

Ronald

"The unProfessional" <sp**@shitbits. com> wrote in message
news:3q******** ************@mp owercom.net...

Hi Ronald,

Thanks alot for your time.

I'll put together a quick example and send it on over... Should I email
you
directly?

Sincerely,
Bill

"Ronald Laeremans [MSFT]" <ro*****@online .microsoft.com> wrote in message
news:O8******** ******@TK2MSFTN GP15.phx.gbl...

There is no reason that I know off that fwrite should not work

identically.

Do you have a small repro case you could share?

Ronald Laeremans
Visual C++ team

"The unProfessional" <sp**@shitbits. com> wrote in message
news:Eu******** ************@mp owercom.net...

> 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 BinaryFormatter s, 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?
>
> --
> Bill Merrill
> Lead Developer
> Merchant Companion
>
>