DLL load error with ctypes if files are not in the same folder

[aashok3]

I was getting this error message when I tried to run 'import fncs' even with the location of the libfncs and other DLLs added to the PYTHONPATH env variable.

Traceback (most recent call last):
File "<pyshell#0>", line 1, in
import fncs
File "c:\users\battelle (pnnl)\desktop\aditya\fncs\fncs\python\fncs.py", line 11, in
_lib = ctypes.CDLL(libname)
File "C:\Python27\lib\ctypes_init.py", line 362, in init
self._handle = _dlopen(self._name, mode)
WindowsError: [Error 126] The specified module could not be found

@jeffdaily mentioned that this was due to the assumption that the ctypes call made in fncs.py assumed files to be in the same folder. The libname passed does not involve the full path.