Python CDLL load library with different dependency QT version

Question

I'm using python 2.7 with :

• PySide 1.2.2
• Ctypes

I'm loading dll from a business partners with CTypes that using a different version of Qt than me. So I get this error :

Exception: [Error 127] Specified function not found

My loading code is simple :

os.environ['PATH'] = os.path.join(os.path.dirname(__file__), "win") + ';' + os.environ['PATH']
self.path = ctypes.util.find_library("my.dll")
self.libext = ctypes.CDLL(self.path)

The path generated is good and

I don't see what choices I have to load such external dll. I don't want to change my graphic lib, because I could get same conflict with an other partner library that could use the same lib.

How can I handle that ?

• Is There a way to load dll with his own dependency ?
• Is it possible to use different version of Qt in same thread ?