[C++-sig] passing wrapped c++ objects to boost wrapped function

[Kim Branson]

On Jan 4, 2007, at 1:39 PM, Roman Yakovenko wrote:

> On 1/4/07, Kim Branson <kim.branson at stanford.edu> wrote:
>> Sorry. What was i missing out?
>
> OEMol class and how you wrapped it.
The OEMol was not wrapped by me, but a vendor. I have the headers,  
and the python bindings appear to be generated by swig.

class OEMolBase(OEBase):
     """Proxy of C++ OEMolBase class"""
     def __init__(self): raise RuntimeError, "No constructor defined"
     def __repr__(self):
         return "<%s.%s; proxy of C++ OEChem::OEMolBase instance at % 
s>" % (self.__class__.__module__, self.__class__.__name__, self.this,)
     def __del__(self, destroy=_oechem.delete_OEMolBase):
         """__del__(self)"""
         try:
             if self.thisown: destroy(self)
         except: pass
	
	.... methods etc....

     def GetMaxAtomIdx(*args):
         """GetMaxAtomIdx(self) -> unsigned int"""
         return _oechem.OEMolBase_GetMaxAtomIdx(*args)

>
>>
>> The final app will need to run on Linux, Windows and OSX. At the
>> moment i'm developing under osx 10.4 using python 2.4.
>> We have versions of the  C++ library OEChem for linux, windows and
>> osx with python bindings.
>>
>> Is there a dl module for osx?  I found some mailing list threads that
>> would suggest not,
>
> I never used osx, so cannot help you here.  I suggest you to try.
>

The dl module is disabled on osx, and python needs to patched to  
enable it.
On linux i used the DLFCN module to provide the dl.RTLD flags.

In both cases i rebuilt Boost against the new python 2.4.4

testing with the following in the pythonScript on osx, (DLFCN for linux)

import sys
import dl
sys.setdlopenflags(dl.RTLD_NOW|dl.RTLD_GLOBAL)
from openeye.oechem import *
import test
mol = OEMol()
print "mol is ",mol
print type(mol)
ifs = oemolistream("ligand.mol2")
OEReadMolecule(ifs,mol)
numatoms = test.numberOfAtoms(mol)

still produces
Traceback (most recent call last):
   File "functionsTest.py", line 39, in ?
     numatoms = test.numberOfAtoms(mol);
Boost.Python.ArgumentError: Python argument types in
     test.numberOfAtoms(OEMol)
did not match C++ signature:
     numberOfAtoms(OEChem::OEMol {lvalue})

am i using the sys.setdlopenflags(dl.RTLD_NOW|dl.RTLD_GLOBAL) correctly?

cheers

Kim



> -- 
> Roman Yakovenko
> C++ Python language binding
> http://www.language-binding.net/
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