I'm playing with using COM object shared among different threads.
Unfortunately I've come into a problem - I don't know how to properly invoke
com object from external thread. Here comes simplified code I'd like to use:
class ComObjectWrappe r:
#this class is by all means needed - of course it's code is much more
complicated than just simply wrapping the COM interface
def __init__(self):
self.ComObject = Dispatch(someco m)
def useCom(self, value):
self.ComObject. use(value)
class MainThread:
def __init__(self):
self.Object = ComObjectWrappe r()
def runChildThread( self):
CThread = ChildThread(sel f)
CThread.start()
class ChildThread(Thr ead):
def __init__(self, parent):
self.Parent = parent
def run(self):
#This thread has to use some methods from ComObjectWrappe r instance
and it's dispatched COM object
pythoncom.CoIni tialize()
self.Parent.Obj ect.UseCom() # <--- this generates error
pythoncom.CoUni nitialize()
I was trying to use different combinations of sys.coinit_flag s = 0 and
pythoncom.COINI T_MULTITHREADED but without success up till now. I've even
managed to send to child thread proper com reference by using stream
marshalling (as stated in "Python programming for win32"), but still I don't
want to use COM itself but its "wrapper" class. Any enlightening thoughts?
Michal
Unfortunately I've come into a problem - I don't know how to properly invoke
com object from external thread. Here comes simplified code I'd like to use:
class ComObjectWrappe r:
#this class is by all means needed - of course it's code is much more
complicated than just simply wrapping the COM interface
def __init__(self):
self.ComObject = Dispatch(someco m)
def useCom(self, value):
self.ComObject. use(value)
class MainThread:
def __init__(self):
self.Object = ComObjectWrappe r()
def runChildThread( self):
CThread = ChildThread(sel f)
CThread.start()
class ChildThread(Thr ead):
def __init__(self, parent):
self.Parent = parent
def run(self):
#This thread has to use some methods from ComObjectWrappe r instance
and it's dispatched COM object
pythoncom.CoIni tialize()
self.Parent.Obj ect.UseCom() # <--- this generates error
pythoncom.CoUni nitialize()
I was trying to use different combinations of sys.coinit_flag s = 0 and
pythoncom.COINI T_MULTITHREADED but without success up till now. I've even
managed to send to child thread proper com reference by using stream
marshalling (as stated in "Python programming for win32"), but still I don't
want to use COM itself but its "wrapper" class. Any enlightening thoughts?
Michal