MS VS 2005 C++ linker error

[JasonPk]

I am trying to use VC++ 2005 to program an NI card using niHSDIO.lib version 1.5.2. When I compile my code, the linker generates an error:

Error 1 error LNK2019: unresolved external symbol _niHSDIO_WaitUntilDone@8 referenced in function "public: void __thiscall DynamicGenerationCore::GeneratePattern(void)" (?GeneratePattern@DynamicGenerationCore@@QAEXXZ) DynamicGenerationCore.obj 

It looks like C & C++ naming convention issue, but niHSDIO.h should handle this because extern "C"  is used there. The niHSDIO.lib is timestamped on 6/30/2007.

Thanks,

Jason

[Paul_C.]

Hi Jason,

I would recommend trying our example programs to verify that they are able to link the HSDIO library properly.  This can be accomplished by going to Start » All Programs » National Instruments » NI-HSDIO » Examples » C.  I would take a look at the dynamic generation example found here: "C:\Program Files\IVI\Drivers\niHSDIO\Examples\c\Dynamic Generation\DynamicGeneration".  Open the file named DynamicGeneration.dsp and it should allow you to convert the project to a Visual Studio 2005 project.  I would then verify that you are able to run the project with no errors.  This example should give you the proper method to link the niHSDIO.lib file.  I would also recommend looking at the NI Digital Waveform Generator-Analyzer Help (Start » All Programs » National Instruments » NI-HSDIO » Documentation).  There is a section entitled "Using NI-HSDIO in Visual C++" (NI Digital Waveform Generator-Analyzer Help » Programming » Getting Started with NI-HSDIO) that might help you out.

I hope this helps,
Paul C.

[JasonPk]

You are right, Paul. I haven't liked the niHSDIO.lib correctly. Also, there are quite a few places where the libraries are. Of those, one under /msc folder is correct, but not the one under /bc folder. Or it may need other libraries as well since /msc folder has more.

Thanks,

Jason