[chimera-dev] Packaging an extension... Error

[MARYAM ARAB]

Dear Developers,

Hi,
I have a C++ program and I want to package it under the tools menu. I made
a dll from my program.
My dll gets two input ( pdb name and volum density level ,)
and generate the output. when I save the python codes to execute my dll in
the chimera IDLE, every thing works well and my program starts working and
generates the output. here is the code that I ran in the IDLE:

     import ctypes
     dll = ctypes.CDLL('tracer_v2.dll')
    dll.calc.argtypes = [ctypes.c_char_p, ctypes.c_double]
    dll.calc.restype = ctypes.c_int
    print(dll.calc('1733_H',3))

The problem that I faced is that when I add an extension button to the
chimera and wants to call my function (calc('1733_H', 3) ) from there, I
get an error:

WindowsError Exception in Tk callback
  Function: <function command at 0x0D1A89B0> (type: <type 'function'>)
  Args: ()
Traceback (innermost last):
  File "C:\Program Files (x86)\Chimera
1.10.1\bin\lib\site-packages\Pmw\Pmw_1_3_3\lib\PmwBase.py", line 1747, in
__call__
    return apply(self.func, args)
  File "C:\Program Files (x86)\Chimera 1.10.1\share\chimera\baseDialog.py",
line 449, in command
    getattr(s, buttonFuncName(txt))()
  File "Z:\Tracer_Chimera\GUI\TracerUI\gui.py", line 43, in Apply
    TracerUI.mainchain()
  File "Z:\Tracer_Chimera\GUI\TracerUI\__init__.py", line 9, in mainchain
    dll = ctypes.CDLL('tracer_v2.dll')
  File "C:\Program Files (x86)\Chimera 1.10.1\bin\lib\ctypes\__init__.py",
line 365, in __init__
    self._handle = _dlopen(self._name, mode)
WindowsError: [Error 126] The specified module could not be found

Would you please help me know how I can fix it?

Thanks,
Maryam Arab
Research Assistant
Old Dominion University
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