Re: Passing pointers from mex->octave->mex

[Jose]

On 10/13/2011 06:20 PM, Arnaud BARRE wrote:
> > > How to make octave to store a pointer to a structure created in a mex file
> > > and how to pass that pointer to another mex file?

> You can also check the utility "Mex Object Handle" realized by Tim
> Bailey (http://www-personal.acfr.usyd.edu.au/tbailey/software/index.html).
> It is in C++, but the main idea is here and the main part of the code
> can be translated in C. Moreover, this utility is for Matlab but works
> well under Octave (At least with the tests I realized).

Thanks Arnaud for this valuable reference.

I am testing the code now. I had to do some minor changes to make it 
work in my machine. Here I put them for future reference:

1-Assuming that all the .h and .cpp files are in the same directory (as 
they come in the zip file), change
#include "../ObjectHandle.h" to #include "ObjectHandle.h" in 
mex_destroy.cpp and mex_create.cpp

2-Change lines 113 and 114 of ObjectHandle.h to
typename std::list<ObjectHandle<T>*>::iterator i;
typename std::list<ObjectHandle<T>*>::iterator end= objlist.end();
(note the addition of 'typename')

3-It seems that the code is for 32 bits. As I have a 64 bits machine, I 
had to change all the occurences of mxINT32_CLASS to mxINT64_CLASS 
(lines 140 and 167)

That made the trick, at least the mex_handletest works now.

BR
Jose