C++ Cannot Open extcode.h

[diarmaede]

I am trying to follow the tutorial "Using External Code in LabVIEW," http://www.ni.com/pdf/manuals/370109a.pdf.  I am using Microsoft Visual Studio Community 2015, which is quite different than the IDE described in the tutorial.  Still, I hacked my way through the instructions until I get to the part where I try to build the dll.  At that point, I get an error message stating that the program "cannot open source file "extcode.h."  Does anyone have ideas as to why this might be happening?  At this point, my C++ code looks like this:

/* Call Library source file */

#include "extcode.h"

_declspec(dllexport) long avg_num(float a[], long size, float *avg);

_declspec(dllexport) long avg_num(float a[], long size, float *avg)
{

    int i;
float sum=0;
if(a != NULL)
    {
    for(i=0;i < size; i++)
        sum = sum + a[i];
    }
else
    return (1);
*avg = sum / size;
return (0);

}

Thanks.

[CoastalMaineBird]

1... You didn't specify which LabVIEW version you are using; I've no idea why not.

2... Your link is gorched.  try http://www.ni.com/pdf/manuals/370109a.pdf .

3... The doc you tried to link to is dated July 2000.

4... I believe that External Code has been deprecated as of LV 2012 / 2013 (not sure which), in favor of using only DLLs / shared libraries.

You should either:

--- Revert to an older version of LabVIEW

or

--- Build a DLL / shared library, using the manuals appropriate to your LV version.