In article <5k4muq$9jq at saphir.jouy.inra.fr>,
"Marion-Poll Frrederic" <marion at versailles.inra.fr>
wrote:
>>dear netters,
>>May be someone of you have experienced the same problem and
you could help
>me...
>>We are doing electrophysiology here in our lab, and I use
to work with Data
>Translation boards (DT2821, DT23EZ). I have developped a
program in C++
>(running under W95 & NT4) to analyze our data. I would like
to allow this
>program to acquire data with these boards. At the present
time, I have the
>DT SDK, i.e. a library and DLLs that allow me to do the job
nicely if the
>library is "statically linked" to it.
>>However, the program linked that way does not run under NT4
because the
>library is loaded when the program is launched, and it
misses an entry
>point within the kernel not available only under W95. The
solution would be
>to link the program "dynamically", ie use the library only
when needed and
>when the program runs on a W95 computer.
>>>At the present time, I can't because for some obscure
reason to me, my
>program does not get the correct address of the
"olDaEnumBoards" function.
>I suspect that this has something to do with the CALLBACK
mechanism and the
>static functions within my program.
>>Any help would be appreciated.
>thanks in advance
>>Frederic Marion-Poll
>INRA Phytopharmacie
>email :
>marion at versailles.inra.fr>>>>
Dear Mr. Marion-Poll,
We used to have, quite a long time ago, someone in our lab
who tried (unsuccessfully) to use the DT SDK (for a DT2821)
to develop an Win32 electrophysiology application under
NT3.5. At this time, the SDK was mostly 16-bit, and this
person went into great pain to develop thunking layers
between the 16-bit DLLs and his application, eventually to
reach a "brick wall" and abandon the project altogether.
I could be totally wrong, but I think that the problem
resides in the fact that NT does not allow port access,
unless the library you use includes a kernel device driver
specific to Windows NT. My wild guess is that the
enumeration function fails, not because of a linking problem
(because linking should behave similarly on all Win32
platform) but because the olDaEnumBoards function tries
unsucessfully to access hardware directly (???), a no-no
under NT. If the SDK is NT-specific, then ignore my
answer...
Good luck.
Quoc Thang NGUYEN
Laboratory of Cellular and
Molecular Neurobiology
Dept. of Psychobiology
University of California, Irvine
Irvine, CA92717 USA
Ph: (714) 824-4730
Fx: (714) 824-3522