wolfgang

My inputs are LV I32 controls. For the library function node, I'm using Signed 32 bit Integers. I've attached my little vi.

I have also tried using the example method of returning void in the dll and using a pointer to an integer to get the data out, but that didn't work either.

I'm wondering if it is a compiler issue (or maybe I'm exporting the function incorrectly or something), as I have called win32 dlls with no problems.

Anyway, thanks for your help,

Jon

Download File:post-1931-1140114472.vi

Hello,

I'm trying to write a dll for use in LabVIEW.

So I make this simple little dll source:

#include "lvdll.h"__declspec(dllexport) int AddInts(int x, int y) {	int z;	z = x+y;	return(z);}

It compiles fine (using OpenWatcom compiler) and I write a little test C app and it works correctly when called from there.

However, in LabVIEW, I use the call library function node, using C calling convention and wire up i32s to the parameters, I always get 1244517 as the result.

If anyone has any idea what could be going on, I would appreciate the help. This is starting to drive me nuts.

Thanks a lot,

Jon