This code is useful for handling c functions that should return ObjCInstances
https://github.com/scj643/objc_tools/blob/master/objc_tools/c/objc_handler.py
```
from objc_util import ObjCInstance, c_void_p
def chandle(result, func, args):
'''chandle
Handles c_void_p to objc type
use as a errcheck for a ctypes function
>>> cfunc.restype = c_void_p
>>> cfunc.errcheck = chandle
'''
if isinstance(result, (c_void_p, int)) and result:
return ObjCInstance(result)
if name == 'main':
from objc_util import *
from objc_util import c
MRMediaRemoteCopyPickableRoutes = c.MRMediaRemoteCopyPickableRoutes
MRMediaRemoteCopyPickableRoutes.restype = c_void_p
MRMediaRemoteCopyPickableRoutes.errcheck = chandle
t=MRMediaRemoteCopyPickableRoutes()```