MATLAB: Error using MATLAB “loadlibrary” function

Question

I am trying to load the NI DAQmx library "nicaiu.dll" and the associated header "nidaqmx.h" in MATLAB as given below:-

loadlibrary('nicaiu.dll','nidaqmx.h','alias','ni');

Please note that nicaiu.dll is 32-bit and along with nidaqmx.h reside in the current MATLAB(again 32-bit) folder. I am getting the following error:-

Warning: Warnings messages were produced while parsing.  Check the functions you intend to use for correctness.  Warning text can be
viewed using:
 [notfound,warnings]=loadlibrary(...) 
> In loadlibrary at 344 
Error using loadlibrary (line 419)
There was an error loading the library "C:\Documents and Settings\rendtest\My Documents\MATLAB\nicaiu.dll"
A dynamic link library (DLL) initialization routine failed.
Caused by:
    Error using loaddefinedlibrary
    A dynamic link library (DLL) initialization routine failed.

What am I doing wrong?

Answer 1

After some research about dependencies of nicaiu.dll, I discovered that all the dependencies of the dll file must be solved for it to be loaded correctly. So, I had to point this to its original location (C:\Windows\System32) to solve this problem! So my loadlibrary call would look like:-

loadlibrary('C:\windows\system32\nicaiu.dll','nidaqmx.h','alias','ni');

With the above, my problem is resolved. Alternatively, there must be some way of adding the above path to the loadlibrary's location-to-look-for-libraries. For now, I shall close this question.