| Re: Help calling a DLL from a DLM [message #40048 is a reply to message #39962] |
Thu, 01 July 2004 08:51   |
Marc Reinig
Messages: 30
Registered: June 2004
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Member |
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My problem was that I was trying to figure out how to pass my linking
options to IDL. Instead I edited their batch file, Build_win.bat, and ran
that and all is well. I'm not sure how to do it in MAC but I assume there
is some equivalent.
I was porting code that was originally written in C++, I just removed all
the :: stuff, put all the declares at the beginning of each routine, used
malloc instead of new, etc, and used the basic routine names in the DLL I
was calling from the DLM and it worked fine.
Marc Reinig
UCO/Lick
Adaptive Optics Lab
> This is the same problem that I am wrestling with. I can't seem to get
> the linking to work (although the DLM wrapper around the DLL compiles).
> In my case, the DLL is written in C++ - but it looks, to my
> uneducated eye, like the variables in and out of the camera's API are
> simple (i.e. not C++ objects). If the Mac OSX linker complains that
> the the DLL is not a mach-o thingy... ala ...
>
> \"ld: SpotCamCarbon.dll bad magic number(not a Mach-O file)\"
>
> I suppose this tells me that I can't link to the DLL via my C DLM. Ah,
> what to make of it all? Any ideas greatly appreciated.
"Ben Tupper" <btupper@bigelow.org> wrote in message
news:2kfvh4F20ubhU1@uni-berlin.de...
> Haje Korth wrote:
>> Marc,
>> besides the interfacing, a dlm is nothing else but a regular dll.
Therefore,
>> you simply link against the third party .lib or .dll at compile time.
How
>> this is done is compiler specific and you should consult the manual. In
>> Visual Studio you can add the library as an existing item, just as you
>> include idl32.lib.
>> "Marc R. Reinig" <mreinig@ucolick.org> wrote in message
>> news:40dc8a1d@darkstar...
>>
>>> I have created a DLM that works fine, but now I would like to be able to
>>> call a function in the DLL of a capture card vendor from my DLM. How do
>>> I get IDL to link my DLM with the vendors libs? This is in Windows.
>
>
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