Pointers data type in Octave to handle data structures

[Guillaume Schatz]

Hi,

I want to implement a set of functions to perform data acquisitions 
using my own hardware. I want to use handle to have a reference to my 
hardware like the following instructions in Matlab

handle = analogInput('nidaq','1');
...
data = getData(handle);

Do you know how to use pointers in octave C++ files such as

DEFUN_DLD(getData,args, ,"...")
{
   handleType *myHandle;
   myHandle = args(0).???
   ...
   ...
   ...
   pthread_mutex_lock(&(myHandle->myMutex));
   ...
}

I really need a pointer to this structure to manage my different threads.

Thank you for your help

Guillaume