DLL needs to be in the same folder as LabView85.exe

Question

I initialise a spectrometer using a call to
a dll through a call function library node. The dll was supplied with the
spectrometer (which also came with its own stand alone software) and was
installed in the spectrometer folders in C:\Program Files\Spectrometer. The standalone
software works fine. However my labview code does not initialise the
spectrometer properly if I point the function node to same copy of the dll.
In order to get my code to initialise
properly I have to
a)     
put a copy of the dll in the
same folder as Labview85.exe
b)     
reset the path in the call
library function node every time I open my code (ie browse and reselect the dll
that the node is already pointing to and click OK)
Any ideas why this is?
I am considering using the ‘Specify path on
diagram’ option to see if this would make a difference and allow me to point to
the dll in C:\Program Files\Spectrometer but since I have many function nodes
that I would need to change I would like to know if there is another fix, before
ploughing ahead.
I use calls to other dlls in the same
program and these work fine wherever the dll is located.
Thanks in advance
Dave

Answer 1

Hi Dave,
I apologize for misunderstanding the first go around.  In order to prevent LabVIEW from prompting for the DLL path each time you execute, the location of the DLL must be added to the VI Search Path in LabVIEW.  Here are the steps for accomplishing thispen a new VI in LabVIEW.
Select Tools » Options. Select Path and VI Search Path from the pulldown menus.
Uncheck the Use Defaults checkbox.
Use the Browse button to select the path to the directory in which you are storing the DLL.
You can find more details about the issue here.
Regards,
Justin Fuller
National Instruments
-Justin F
National Instruments
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