Error Building DLL, LabView 8.2

[Tamargo]

Hello everybody,

I'm building a CVI application. I need some functions of LabView (related to time series analysis), so I'm trying to build DLLs with the .VIs I need. I followed all the steps necesary and visited all the related topics at ni.com. I always get the following error:

Visit the Request Support page at ni.com/ask to learn more about resolving this problem. +¡

Use the following information as a reference: Error -2147221480 occurred at Building DLL stub.

This can be caused by illegal function or parameter names. Please verify your names are legal C identifiers and do not conflict with LabVIEW headers

This error code is undefined. No one has provided a description for this code, or you might have wired a number that is not an error code to the error code input.

Once, I got a correct DLL with no errors, so it should be possible for others.

This is an example of what I'm trying to compile:

 

And this is what appears, only for a moment, at the end of the compiling (it didn't appear when I manage to build with no errors):

I'm using: LabView 8.2, LabWindows CVI 8.5, NI-DAQ 8.5, Windows XP (SP2)

Any suggestion is really appreciated.

Maybe another way to use this functions in CVI (I need functions related to spectral estimation, ARMA; MUSIC,...)

thank you!

Eduardo Tamargo

Spain

[Tamargo]

I realized that the problem is when compiling a .vi that receives an array and it's length, because when it receives all clusters, it's builded correctly.

Any suggestions?

[DavidOna]

Hi Tamargo,

This link may be helpful.

Regards,

[Tamargo]

Thank you very much for your reply.

As I could see trying different solutions, the problem is not about the returning value. It seems like the .VIs I wanted to create, are only valid for clusters as input parameters, and not for arrays, despite it offers this option when designing the prototype.

[DavidOna]

Hi Tamargo,

     The following KnowledgeBases may help you find out what is happening:

Creating and Calling LabVIEW DLLs with Various Data Types from Microsoft Visual C++

What are the Differences Between "Array Data Pointer", "Array Handle", and "Array Handle Pointer"?

Calling a LabVIEW DLL from C with an Array in a Cluster as a Parameter

     Have you tried developing a very simple VI with an array as an input parameter and checking if the same problem takes place when you build the DLL?

Regards,

[Tamargo]

Thank you for your reply.

By the moment, I tried what I wanted in another computer and it worked, so I think it's related to the NI products intalled in my PC. I've installed several versions of LabView and LabWindows, and at the end, it seems to be a mess when they have to communicate to each other. In a computer with just the whole pack of LabWindows and LabView, I don't get that error. So, I will make the DLLs I need in that computer.

Thanks

Eduardo Tamargo