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snooping data passed to a .DLL?

We have a (commercial) program that comes with Visual Basic source
code. Unfortunately, the source code doesn't quite match the
executable, which I determined by analyzing the memory returned by
calls to the DLL.

We're just off by byte here and there -- but the .DLL is kinda picky
about those things. <g>

The company in question has sent us several revisions to the source,
and we're getting closer. In the meantime, I'm wondering if there's
something I can do to in order to either (1) extract data structures
from the DLL, or (2) do a "snoop" of the conversation between the DLL
and the program.

I should point out that Microsoft VB is not my native tongue -- I'm
more of a Perl/C/Unix kinda guy.

Thanks in advance.
Jul 17 '05 #1
1 1532
Why not just compile the code they have sent you, and use that for your
control?

*David*

"Phil Freed" <pf**@freed.com> wrote in message
news:kc********************************@4ax.com...
We have a (commercial) program that comes with Visual Basic source
code. Unfortunately, the source code doesn't quite match the
executable, which I determined by analyzing the memory returned by
calls to the DLL.

We're just off by byte here and there -- but the .DLL is kinda picky
about those things. <g>

The company in question has sent us several revisions to the source,
and we're getting closer. In the meantime, I'm wondering if there's
something I can do to in order to either (1) extract data structures
from the DLL, or (2) do a "snoop" of the conversation between the DLL
and the program.

I should point out that Microsoft VB is not my native tongue -- I'm
more of a Perl/C/Unix kinda guy.

Thanks in advance.

Jul 17 '05 #2

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